Abstract
Objective
Orthodontists do not perform surgical procedures, nevertheless they are obliged to practice appropriate sterilization techniques to prevent cross-infection. This is also important from an ethical and legal point of view. The aim of the present study is to evaluate the compliance of orthodontists to infection control procedures in Turkey.
Methods
A questionnaire with 36 items was delivered by e-mail to a total of 1152 orthodontists/residents between October 2014 and March 2015 by the Turkish Orthodontic Society. Various data from surveys were analyzed using the IBM SPSS statistics 22 software.
Results
The questionnaire was completed by 130 (11.28%) respondents. 95.4% of the orthodontists were immunized against hepatitis B. The usage rates of type B autoclave, non-type B autoclave, and dry-heat sterilizer were 40%, 17.7%, and 16.9%, respectively. A total of 24.6% of the orthodontists used disinfectant solutions for the sterilization of hand instruments and pliers; the rate of using disinfectants for the sterilization of dental handpieces was found to be higher (56.9%).
Conclusion
The infection control procedures in the field of orthodontics must be improved in Turkey. Training on compliance with the infection control principles should be included in education programs, and these programs should be repeated on a regular basis.
Keywords: Orthodontics, sterilization, disinfection, infection control procedure
INTRODUCTION
Infection control is crucial for orthodontists and for patient health. The concept of sterilization and disinfection was introduced into the dental practice with the recognition of hepatitis B as an occupational disease in 1975, and considerable steps have been taken in infection control procedures with increasing prevalence of human immunodeficiency virus (HIV)/acquired immune deficiency syndrome (AIDS) in the mid-1980s. Dental practitioners are exposed to various types of microorganisms. This exposure poses dental practitioners to the risk of developing infections from mild flu to more severe conditions such as HIV (AIDS), hepatitis B, and hepatitis C. Finally, all precautions must be taken, and sterilization and disinfection methods must be rigorously practiced assuming all patients in dental practice are potential carriers of an infectious disease (1–3).
Infection control procedures in dental practice have been published for the first time in 1978 by the American Dental Association. The Center for Disease Control and Prevention (CDC) later established and implemented the principles for the first time in 1986 and published the guidelines for infection control in 1988, 1989, 1993, and 2003, particularly dedicated to the dental practice (4–8).
All dental procedures carry the risk of direct or indirect cross-infection between the patients and dental care professionals. Current dental services have adopted “standard infection control” measures originally described in the Guidelines for Infection Control in Dental Health-Care Settings published in 2003 by the CDC, the steering organization setting the standards in healthcare services worldwide; the guidelines recognize saliva, in addition to blood, as a potential source of infection. According to the guidelines of the CDC published in 2003, all private practice and clinics must have a written infection control program and have designated an infection control coordinator; the employees must be informed and monitored, and the program must be updated on a regular basis (8–10).
In Turkey, the Turkish Dental Association (TDB) published a special edition for Infection Control in Dental Practice in 2000 (11). In 2007, the Istanbul Chamber of Dental Practitioners distributed an educational CD of Infection Control Directory in Dental Practice in March/April edition (9). Dental practice is a team work involving dental assistants, and the assistants are important components of this team and they play an important part in sterilization (12). Regarding the infection control, the Ministry of Labor and Social Security enacted the Occupational Health and Safety law, and further legal regulations on the patient and employee safety are underway (13, 14). However, training strategy for infection control in dental practice in Turkey does not put dental practitioners at the center of education starting from their education period in the faculty, but, indeed, dental practitioners are primarily responsible for the provision of dental health services (9).
Orthodontists usually do not perform comprehensive surgical procedures, but they are obliged to use appropriate sterilization techniques to prevent cross-infection in daily practice. This is also important from an ethical and legal point of view (15–18). However, the studies have found that orthodontists have lower compliance to the infection control procedures than dentists. The main reason for this is that they work on pediatric cases, they do not perform procedures in deep tissues, sterilization procedures result in the loss of time and money, and sterilization procedures cause corrosion in orthodontic pliers (19–21). There are many studies in the literature that studied the effects of sterilization on orthodontic archwires, pliers, brackets, bands, and elastic ligatures and evaluated infection control procedures to be followed in the practice of orthodontics and the compliance of orthodontists to these procedures (22–28). However, no comprehensive research evaluating the compliance of the Turkish orthodontists to the infection control procedures is available.
In the present study, we aimed to evaluate sterilization and disinfection methods employed in the practice of orthodontics in Turkey and the compliance of orthodontists to these methods.
METHODS
In the present study, a 36 items questionnaire (Appendix 1) was delivered to a total of 1152 orthodontists/residents affiliated to the Turkish Orthodontic Society (TOD) between October 3, 2014 and March 23, 2015 (29). Two deliveries were made using the resources of TOD and two deliveries personally by the authors. A total of 130 (11.28%) respondents completed the questionnaire.
The questionnaire inquired the following variables:
Experience in practice,
Place of work,
Daily patient capacity,
Number of dental assistant,
Sterilization devices used,
Whether or not regular control and maintenance of the sterilization devices are performed,
The methods used in sterilization control,
Sterilization status of the instruments and method of sterilization,
Disposal of bands, brackets, and archwires removed from the patients,
Whether they use recycled brackets/orthodontic materials,
Disinfection status of the impressions and appliances delivered to the dental laboratory,
Presence of written communication line with the dental laboratory,
Place of sharp objects disposal container,
Methods used for the cleaning of environmental surfaces at the clinic and type of gloves used,
Use of protective masks and goggles during environmental cleaning,
Hand washing practices before wearing and after removing gloves,
Use of a separate protective mask in each patient,
Use of protective goggles/face shield during treatment,
Presence of written infection control program,
Hepatitis B, influenza, and tetanus vaccination status.
Statistical Analysis
Statistical analysis was performed using the Statistical Package for Social Sciences (SPSS) version 22.0 software (IBM Corp.; Armonk, NY, USA). Descriptive data were expressed in frequency. The chi-square, Fisher’s exact, and Yates continuity correction tests were used to compare the qualitative data. A p value of <0.05 was considered statistically significant.
RESULTS
The responses of a total of 130 orthodontists and residents included in the present study were compared according to the experience in orthodontics, place of work, and daily number of examined patients (Table 1–5).
Table 1.
Descriptive characteristics of the orthodontists/residents included in the study
| n | % | ||
|---|---|---|---|
| Experience in orthodontics | ≤20 years | 105 | 80.8 |
| >20 years | 25 | 19.2 | |
| Place of work | Private office | 32 | 24.6 |
| Private oral and dental health clinic | 28 | 21.5 | |
| University clinic | 70 | 53.8 | |
| Daily patient volume | 0–10 | 53 | 40.8 |
| 10–20 | 50 | 38.5 | |
| >20 | 27 | 20.8 |
Table 2.
Percentage of orthodontists/residents who responded to questions regarding infection control procedure
| n | % | ||
|---|---|---|---|
| Written infection control program at your clinic | Yes | 65 | 50 |
| No | 65 | 50 | |
| A separated sterilization room | Yes | 113 | 86.9 |
| No | 17 | 13.1 | |
| Cleaning of the instruments to be sterilized | Manually with water | 61 | 46.9 |
| Ultrasonic cleaner | 31 | 23.8 | |
| Washer disinfector | 38 | 29.2 | |
| A separated instrument washing sink separate from the hand washing sink | Yes | 107 | 82.3 |
| No | 23 | 17.7 | |
| Sterilization devices used | Type B autoclave | 52 | 40.0 |
| Non-type B autoclave | 23 | 17.7 | |
| Cassette autoclave | 19 | 14.6 | |
| Dry-heat sterilizer | 22 | 16.9 | |
| No response | 14 | 10.8 | |
| Annual maintenance of sterilization devices | Yes | 109 | 83.8 |
| No | 21 | 16.2 | |
| Cleaning of water tank of the autoclave | Yes | 102 | 78.5 |
| No | 28 | 21.5 | |
| Packing of instruments to be sterilized in the autoclave | I do pack | 115 | 88.5 |
| I do not pack | 15 | 11.5 | |
| Autoclave sterilization control | I perform | 77 | 59.2 |
| I do not perform | 53 | 40.8 | |
| Supply of biological indicator spore test for the control of autoclave sterilization | I perform | 58 | 44.6 |
| I do not perform | 72 | 55.4 | |
| Regularly keeping and storing of sterilization records | Yes | 67 | 51.5 |
| No | 63 | 48.5 | |
| Methods used for the sterilization of dental handpieces | Wiping the outer surface with disinfectant solution | 74 | 56.9 |
| In the autoclave | 37 | 28.5 | |
| Handpiece autoclave | 19 | 14.6 | |
| Methods used for the sterilization of hand instruments/orthodontic pliers | Wiping with a disinfectant solution | 32 | 24.6 |
| Autoclave | 74 | 56.9 | |
| Cassette autoclave | 16 | 12.3 | |
| Dry-heat sterilizer | 8 | 6.2 | |
| Sterilization of molar bands after purchase | Yes | 36 | 27.7 |
| No | 94 | 72.3 | |
| Sterilization of molar bands after trial in the patient | Sitting in disinfectant | 45 | 34.6 |
| Autoclave | 69 | 53.1 | |
| Cassette autoclave | 9 | 6.9 | |
| Dry-heat sterilizer | 7 | 5.4 | |
| Disposal of the bands, brackets, and archwires removed from the patients during or after treatment | Waste basket | 53 | 40.8 |
| Sharps bin | 66 | 50.8 | |
| Metal waste bin | 11 | 8.5 | |
| Use of recycled brackets/orthodontic materials | Yes | 25 | 19.2 |
| No | 105 | 80.8 | |
| Disinfection status of impressions or appliances to be delivered to an outer laboratory | Yes | 79 | 60.8 |
| No | 51 | 39.2 | |
| Written communication line with outer laboratory | Yes | 93 | 71.5 |
| No | 37 | 28.5 | |
| Knowledge of biofilm development in the dental unit water lines requiring cleaning | Yes | 97 | 74.6 |
| No | 33 | 25.4 | |
| Place of sharps bin | At the clinic | 73 | 56.2 |
| At the sterilization room | 57 | 43.8 | |
| Environmental surface cleaning | I disinfect | 100 | 76.9 |
| I cover with dedicated cloths | 30 | 23.1 | |
| Type of gloves used in instrument and environmental cleaning | I do not wear | 6 | 4.6 |
| Kitchen-type gloves | 24 | 18.5 | |
| Examination gloves | 100 | 76.9 | |
| Wearing protective mask and goggles during environmental cleaning/manual cleaning of instruments | Yes | 64 | 49.2 |
| No | 66 | 50.8 | |
| Hand washing before wearing gloves | Yes | 74 | 56.9 |
| No | 56 | 43.1 | |
| Hand washing after removing gloves | Yes | 124 | 95.4 |
| No | 3 | 4.6 | |
| Using a separate protective mask for each patient | Yes | 41 | 31.5 |
| No | 89 | 68.5 | |
| Wearing protective goggles/shields during treatment | Yes | 63 | 48.5 |
| No | 67 | 51.5 | |
| Hepatitis B vaccination status | Yes | 124 | 95.4 |
| No | 6 | 4.6 | |
| Influenza vaccination status | Yes | 21 | 16.2 |
| No | 109 | 83.8 | |
| Last tetanus vaccination | 6–10 years | 78 | 60.0 |
| 10–20 years | 20 | 15.4 | |
| >20 years | 32 | 24.6 |
Table 3.
Percentage of orthodontists/residents who responded to questions regarding infection control procedures according to experience
| Experience | ||||
|---|---|---|---|---|
| ≤20 years n (%) |
>20 years n (%) |
p | ||
| Presence of dental assistant | 93 (88.6%) | 25 (100%) | 0.121 | |
| Presence of a written infection control program at the clinic | 52 (49.5%) | 13 (52%) | 1.000 | |
| Presence of a separated sterilization room | 94 (89.5%) | 19 (76%) | 0.096 | |
| Cleaning of the instruments to be sterilized | Manually with water | 48 (45.7%) | 13 (52.0%) | 0.856 |
| Ultrasonic cleaner | 25 (23.8%) | 6 (24.0%) | ||
| Washer disinfector | 32 (30.5%) | 6 (24%) | ||
| Presence of a separated instrument washing sink separate from the hand washing sink | 87 (82.9%) | 20 (80%) | 0.772 | |
| Sterilization devices used | Type B autoclave | 45 (47.4%) | 7 (33.3%) | 0.305 |
| Non-type B autoclave | 19 (20.0%) | 4 (19.0%) | ||
| Cassette autoclave | 16 (16.8%) | 3 (14.3%) | ||
| Dry-heat sterilizer | 15 (15.8%) | 7 (33.3%) | ||
| Annual maintenance of sterilization devices | 87 (82.9%) | 22 (88%) | 0.763 | |
| Cleaning of water tank of the autoclave | 82 (78.1%) | 20 (80%) | 1.000 | |
| Packing of instruments to be sterilized in the autoclave | 93 (88.6%) | 22 (88%) | 1.000 | |
| Autoclave sterilization control | 62 (59%) | 15 (60%) | 1.000 | |
| Supply of biological indicator spore test for the control of autoclave sterilization | 53 (50.5%) | 5 (20%) | 0.011* | |
| Regularly keeping and storing of sterilization records | 58 (55.2%) | 9 (36%) | 0.132 | |
| Methods used for the sterilization of dental handpieces | Wiping the outer surface with disinfectant solution | 60 (57.1%) | 14 (56.0%) | 0.461 |
| In the autoclave | 28 (26.7%) | 9 (36.0%) | ||
| Dedicated device (handpiece autoclave) | 17 (16.2%) | 2 (8.0%) | ||
| Methods used for the sterilization of hand instruments/orthodontic pliers | Wiping with a disinfectant solution | 23 (21.9%) | 9 (36.0%) | 0.138 |
| Autoclave | 62 (59.0%) | 12 (48.0%) | ||
| Cassette autoclave | 15 (14.2%) | 1 (4.0%) | ||
| Dry-heat sterilizer | 5 (4.8%) | 3 (12.0%) | ||
| Sterilization of molar bands after purchase | 26 (24.8%) | 10 (40%) | 0.200 | |
| Sterilization of molar bands after trial in the patient | Sitting in disinfectant solution | 37 (35.2%) | 8 (32.0%) | 0.624 |
| Autoclave | 57 (54.3%) | 12 (48.0%) | ||
| Cassette autoclave | 6 (5.7%) | 3 (12.0%) | ||
| Dry-heat sterilizer | 5 (4.8%) | 2 (8.0%) | ||
| Disposal of the bands, brackets, and archwires removed from the patients during or after treatment | Waste basket | 48 (45.7%) | 5 (20.0%) | 0.040* |
| Sharps bin | 50 (47.6%) | 16 (64.0%) | ||
| Metal waste bin | 7 (6.7%) | 4 (16.0%) | ||
| Use of recycled brackets/orthodontic materials | 19 (18.1%) | 6 (24%) | 0.573 | |
| Disinfection status of impressions or appliances to be delivered to an outer laboratory | 67 (63.8%) | 12 (48%) | 0.220 | |
| Written communication line with outer laboratory | 75 (71.4%) | 18 (72%) | 1.000 | |
| Knowledge of biofilm development in the dental unit water lines requiring cleaning | 80 (76.2%) | 17 (68%) | 0.555 | |
| Place of sharps bin | At the clinic | 59 (56.2%) | 14 (56%) | 1.000 |
| At the sterilization room | 46 (43.8%) | 11 (44%) | ||
| Environmental surface cleaning | I disinfect | 83 (79%) | 17 (68%) | 0.361 |
| I cover with dedicated cloths | 22 (21%) | 8 (32%) | ||
| Type of gloves used in instrument and environmental cleaning | Do not wear | 5 (4.8%) | 1 (4.0%) | 0.966 |
| Kitchen-type gloves | 19 (18.1%) | 5 (20%) | ||
| Examination gloves | 81 (77.1%) | 19 (76%) | ||
| Wearing protective mask and goggles during environmental cleaning/manual cleaning of instruments | 49 (46.7%) | 15 (60%) | 0.329 | |
| Hand washing before wearing gloves | 54 (51.4%) | 20 (80%) | 0.018* | |
| Hand washing after removing gloves | 100 (95.2%) | 24 (96%) | 1.000 | |
| Use of a separate protective mask for each patient | 36 (34.3%) | 5 (20%) | 0.253 | |
| Wearing protective goggles/shields during treatment | 50 (47.6%) | 13 (52%) | 0.864 | |
| Hepatitis B vaccination status | 100 (95.2%) | 24 (96%) | 1.000 | |
| Influenza vaccination status | 14 (13.3%) | 7 (28%) | 0.125 | |
| Last tetanus vaccination | 6–10 years | 67 (63.8%) | 11 (44.0%) | 0.116 |
| 10–20 years | 16 (15.2%) | 4 (16.0%) | ||
| >20 years | 22 (21.0%) | 10 (40.0%) | ||
Chi-square, continuity (Yates) correction, and Fisher’s exact tests were used,
p<0.05
Table 4.
Percentage of orthodontists/residents who responded to questions regarding infection control procedures according to the place of work
| Place of work | |||||
|---|---|---|---|---|---|
|
|
|||||
| Private office n (%) |
Private oral and dental health clinic n (%) |
University clinic n (%) |
p | ||
| Presence of dental assistant | 32 (100%) | 27 (96.4%) | 59 (84.3%) | 0.020* | |
| Presence of a written infection control program at the clinic | 16 (50%) | 13 (46.4%) | 36 (51.4%) | 0.905 | |
| Presence of a separated sterilization room | 21 (65.6%) | 24 (85.7%) | 68 (97.1%) | 0.001** | |
| Cleaning of the instruments to be sterilized | Manually with water | 19 (59.4%) | 13 (46.4%) | 29 (41.4%) | 0.419 |
| Ultrasonic cleaner | 6 (18.8%) | 7 (25.0%) | 18 (25.7%) | ||
| Washer disinfector | 7 (21.8%) | 8 (28.6%) | 23 (32.9%) | ||
| Presence of a separated instrument washing sink separate from the hand washing sink? | 26 (81.3%) | 24 (85.7%) | 57 (81.4%) | 0.867 | |
| Sterilization devices used | Type B autoclave | 16 (53.3%) | 16 (61.5%) | 20 (33.3%) | 0.007** |
| Non-type B autoclave | 4 (13.3%) | 0 (0%) | 19 (31.7%) | ||
| Cassette autoclave | 2 (6.7%) | 6 (23.1%) | 11 (18.3%) | ||
| Dry-heat sterilizer | 8 (26.7%) | 4 (15.4%) | 10 (16.7%) | ||
| Annual maintenance of sterilization devices | 20 (62.5%) | 25 (89.3%) | 64 (91.4%) | 0.001** | |
| Cleaning of water tank of the autoclave | 25 (78.1%) | 24 (85.7%) | 53 (75.7%) | 0.553 | |
| Packing of instruments to be sterilized in the autoclave | 26 (81.3%) | 28 (100%) | 61 (87.1%) | 0.067 | |
| Autoclave sterilization control | 13 (40.6%) | 16 (57.1%) | 48 (68.6%) | 0.028* | |
| Supply of biological indicator spore test for the control of autoclave sterilization | 4 (12.5%) | 15 (53.6%) | 39 (55.7%) | 0.001** | |
| Regularly keeping and storing of sterilization records | 9 (28.1%) | 13 (46.4%) | 45 (64.3%) | 0.003** | |
| Methods used for the sterilization of dental handpieces | Wiping the outer surface with disinfectant solution | 21 (65.6%) | 12 (42.9%) | 41 (58.6%) | 0.050 |
| In the autoclave | 11 (34.4%) | 10 (35.7%) | 16 (22.9%) | ||
| Dedicated device (handpiece autoclave) | 0 (0%) | 6 (21.4%) | 13 (18.6%) | ||
| Methods used for the sterilization of hand instruments/orthodontic pliers | Wiping with a disinfectant solution | 11 (34.4%) | 11 (39.3%) | 10 (14.3%) | 0.050 |
| Autoclave | 17 (53.1%) | 12 (42.9%) | 45 (64.3%) | ||
| Cassette autoclave | 2 (6.3%) | 5 (17.9%) | 9 (12.9%) | ||
| Dry-heat sterilizer | 2 (6.3%) | 0 (0%) | 6 (8.6%) | ||
| Sterilization of molar bands after purchase | 13 (40.6%) | 5 (17.9%) | 18 (25.7%) | 0.125 | |
| Sterilization of molar bands after trial in the patient | Sitting in disinfectant solution | 13 (40.6%) | 8 (28.6%) | 24 (34.3%) | 0.254 |
| Autoclave | 17 (53.1%) | 14 (50.0%) | 38 (54.3%) | ||
| Cassette autoclave | 1 (3.1%) | 5 (17.9%) | 3 (4.3%) | ||
| Dry-heat sterilizer | 1 (3.1%) | 1 (3.6%) | 5 (7.1%) | ||
| Disposal of the bands, brackets, and archwires removed from the patients during or after treatment | Waste basket | 9 (28.1%) | 11 (39.3%) | 33 (47.1%) | 0.456 |
| Sharps bin | 19 (59.4%) | 15 (53.6%) | 32 (45.7%) | ||
| Metal waste bin | 4 (12.5%) | 2 (7.1%) | 5 (7.1%) | ||
| Use of recycled brackets/orthodontic materials | 6 (18.8%) | 3 (10.7%) | 16 (22.9%) | 0.386 | |
| Disinfection status of casts or equipment to be delivered to an outer laboratory | 16 (50%) | 16 (57.1%) | 47 (67.1%) | 0.234 | |
| Written communication line with outer laboratory | 25 (78.1%) | 21 (75%) | 47 (67.1%) | 0.470 | |
| Knowledge of biofilm development in the dental unit water lines requiring cleaning | 22 (68.8%) | 20 (71.4%) | 55 (78.6%) | 0.520 | |
| Place of sharps bin | At the clinic | 18 (56.3%) | 17 (60.7%) | 38 (54.3%) | 0.845 |
| At the sterilization room | 14 (43.8%) | 11 (39.3%) | 32 (45.7%) | ||
| Environmental surface cleaning | I disinfect | 26 (81.3%) | 21 (75%) | 53 (75.7%) | 0.797 |
| I cover with dedicated cloths | 6 (18.8%) | 7 (25%) | 17 (24.3%) | ||
| Type of gloves used in instrument and environmental cleaning | Do not wear | 1 (3.1%) | 1 (3.6%) | 4 (5.7%) | 0.836 |
| Kitchen-type gloves | 5 (15.6%) | 7 (25%) | 12 (17.1%) | ||
| Examination gloves | 26 (81.3%) | 20 (71.4%) | 54 (77.1%) | ||
| Wearing protective mask and goggles during environmental cleaning/manual cleaning of instruments | 17 (53.1%) | 16 (57.1%) | 31 (44.3%) | 0.454 | |
| Hand washing before wearing gloves | 22 (68.8%) | 14 (50%) | 38 (54.3%) | 0.276 | |
| Hand washing after removing gloves | 32 (100%) | 24 (85.7%) | 68 (97.1%) | 0.018* | |
| Use of a separate protective mask for each patient | 6 (18.8%) | 9 (32.1%) | 26 (37.1%) | 0.178 | |
| Wearing protective goggles/shields during treatment | 14 (43.8%) | 15 (53.6%) | 34 (48.6%) | 0.749 | |
| Hepatitis B vaccination status | 31 (96.9%) | 28 (100%) | 65 (92.9%) | 0.282 | |
| Influenza vaccination status | 6 (18.8%) | 3 (10.7%) | 12 (17.1%) | 0.663 | |
| Last tetanus vaccination | 6–10 years | 15 (46.9%) | 15 (53.6%) | 48 (68.6%) | 0.091 |
| 10–20 years | 4 (12.3%) | 5 (17.9%) | 11 (15.7%) | ||
| >20 years | 13 (40.6%) | 8 (28.6%) | 11 (15.7%) | ||
Chi-square test was used,
p<0.05,
p<0.01
Table 5.
Percentage of orthodontists/residents who responded to questions regarding infection control procedures according to the daily volume of patient
| Daily patient volume | |||||
|---|---|---|---|---|---|
|
|
|||||
| 0–10 n (%) |
10–20 n (%) |
>20 n (%) |
p | ||
| Presence of dental assistant | 45 (84.9%) | 47 (94%) | 26 (96.3%) | 0.151 | |
| Presence of a written infection control program at the clinic | 31 (58.5%) | 23 (46%) | 11 (40.7%) | 0.250 | |
| Presence of a separated sterilization room | 44 (83%) | 44 (88%) | 25 (92.6%) | 0.466 | |
| Cleaning of the instruments to be sterilized | Manually with water | 28 (52.8%) | 23 (46.0%) | 10 (37.0%) | 0.299 |
| Ultrasonic cleaner | 15 (28.3%) | 11 (22.0%) | 5 (18.5%) | ||
| Washer disinfector | 10 (18.9%) | 16 (32.0%) | 12 (44.5%) | ||
| Presence of a separated instrument washing sink separate from the hand washing sink? | 44 (83%) | 40 (80%) | 23 (85.2%) | 0.837 | |
| Sterilization devices used | Type B autoclave | 18 (39.1%) | 20 (44.4%) | 14 (56.0%) | 0.636 |
| Non-type B autoclave | 12 (26.1%) | 7 (15.6%) | 4 (16.0%) | ||
| Cassette autoclave | 9 (19.6%) | 7 (15.6%) | 3 (12.0%) | ||
| Dry-heat sterilizer | 7 (15.2%) | 11 (24.4%) | 4 (16.0%) | ||
| Annual maintenance of sterilization devices | 45 (84.9%) | 39 (78%) | 25 (92.6%) | 0.243 | |
| Cleaning of water tank of the autoclave | 38 (71.7%) | 42 (84%) | 22 (81.5%) | 0.288 | |
| Packing of instruments to be sterilized in the autoclave | 45 (84.9%) | 43 (86%) | 27 (100%) | 0.107 | |
| Autoclave sterilization control | 30 (56.6%) | 31 (62%) | 16 (59.3%) | 0.856 | |
| Supply of biological indicator spore test for the control of autoclave sterilization | 22 (41.5%) | 26 (52%) | 10 (37%) | 0.379 | |
| Regularly keeping and storing of sterilization records | 25 (47.2%) | 27 (54%) | 15 (55.6) | 0.704 | |
| Methods used for the sterilization of dental handpieces | Wiping the outer surface with disinfectant solution | 33 (62.3%) | 26 (52.0%) | 15 (55.6) | 0.166 |
| In the autoclave | 13 (24.5%) | 19 (38.0%) | 5 (18.5%) | ||
| Dedicated device (handpiece autoclave) | 7 (13.2%) | 5 (10%) | 7 (25.9%) | ||
| Methods used for the sterilization of hand instruments/orthodontic pliers | Wiping with a disinfectant solution | 13 (14.5%) | 16 (32.0%) | 3 (11.1%) | 0.556 |
| Autoclave | 29 (54.7%) | 26 (52.0%) | 19 (70.4%) | ||
| Cassette autoclave | 7 (13.2%) | 6 (12.0%) | 3 (11.1%) | ||
| Dry-heat sterilizer | 4 (7.5%) | 2 (4.0%) | 2 (7.4%) | ||
| Sterilization of molar bands after purchase | 10 (18.9%) | 18 (36%) | 8 (29.6%) | 0.147 | |
| Sterilization of molar bands after trial in the patient | Sitting in disinfectant solution | 21 (39.6%) | 18 (36.0%) | 6 (22.2%) | 0.540 |
| Autoclave | 26 (49.1%) | 25 (50%) | 18 (66.7%) | ||
| Cassette autoclave | 2 (3.8%) | 5 (10%) | 2 (7.4%) | ||
| Dry-heat sterilizer | 4 (7.5%) | 2 (4.0%) | 1 (3.7%) | ||
| Disposal of the bands, brackets, and archwires removed from the patients during or after treatment | Waste basket | 22 (41.5%) | 22 (44.0%) | 9 (33.3%) | 0.782 |
| Sharps bin | 28 (52.8%) | 23 (46.0%) | 15 (55.6) | ||
| Metal waste bin | 3 (5.7%) | 5 (10%) | 3 (11.1%) | ||
| Use of recycled brackets/orthodontic materials | 11 (20.8%) | 11 (22%) | 3 (11.1%) | 0.479 | |
| Disinfection status of impressions or appliances to be delivered to an outer laboratory | 28 (52.8%) | 32 (64%) | 19 (70.4%) | 0.264 | |
| Written communication line with outer laboratory | 39 (73.6%) | 35 (70%) | 19 (70.4%) | 0.912 | |
| Knowledge of biofilm development in the dental unit water lines requiring cleaning | 38 (71.7%) | 37 (74%) | 22 (81.5%) | 0.631 | |
| Place of sharps bin | At the clinic | 32 (60.4%) | 25 (50%) | 16 (59.3%) | 0.533 |
| At the sterilization room | 21 (39.6%) | 25 (50%) | 11 (40.7%) | ||
| Environmental surface cleaning | I disinfect | 43 (81.1%) | 36 (72%) | 21 (77.8%) | 0.543 |
| I cover with dedicated cloths | 10 (18.9%) | 14 (28%) | 6 (22.2%) | ||
| Type of gloves used in instrument and environmental cleaning | Do not wear | 2 (3.8%) | 4 (8.0%) | 0 (0%) | 0.411 |
| Kitchen-type gloves | 10 (18.9%) | 7 (14%) | 7 (25.9%) | ||
| Examination gloves | 41 (77.4%) | 39 (78%) | 20 (74.1%) | ||
| Wearing protective mask and goggles during environmental cleaning/manual cleaning of instruments | 18 (34%) | 28 (56%) | 18 (66.7%) | 0.011* | |
| Hand washing before wearing gloves | 29 (54.7%) | 27 (54%) | 18 (66.7%) | 0.516 | |
| Hand washing after removing gloves | 51 (96.2%) | 49 (98%) | 24 (88.9%) | 0.178 | |
| Use of a separate protective mask for each patient | 16 (30.2%) | 18 (36%) | 7 (25.9%) | 0.638 | |
| Wearing protective goggles/shields during treatment | 18 (34%) | 26 (52%) | 19 (70.4%) | 0.007** | |
| Hepatitis B vaccination status | 50 (94.3%) | 48 (96%) | 26 (96.3%) | 0.893 | |
| Influenza vaccination status | 4 (7.5%) | 9 (18%) | 8 (29.6%) | 0.036* | |
| Last tetanus vaccination | 6–10 years | 30 (56.6%) | 31 (62.0%) | 17 (63.0%) | 0.607 |
| 10–20 years | 11 (20.8%) | 7 (14.0%) | 2 (7.4%) | ||
| >20 years | 12 (22.6%) | 12 (24.0%) | 8 (29.6%) | ||
Chi-square test was used,
p<0.05,
p<0.01
Of the total respondents, 80.8% have an experience less than 20 years, and 19.2% have an experience more than 20 years in the field of orthodontics; 24.6% work in private offices, 21.5% work in private oral and dental health clinics, and 53.8% work in university clinics. In terms of daily patient capacity, 40.8% of the respondents have 0–10, 38.5% of them have 10–20, and 20.8% have over 20 patients (Table 1).
Percentage of orthodontists/residents who responded to questions regarding infection control procedure are shown in Table 2. The rates of using type B autoclave, non-type B autoclave, cassette autoclave, and dry-heat sterilizer were 40%, 17.7%, 14.6%, and 16.9%, respectively. The rate of packing instruments to be sterilized in the autoclave was 88.5%, autoclave sterilization control was 59.2%, and supplying biological indicator spore test for controlling of autoclave sterilization was 44.6%. The rate of wiping the outer surface of dental handpieces with disinfectant solution was 56.9%, and using autoclave for the sterilization of hand instruments/orthodontic pliers was 56.9%. Whereas the rate of sitting molar bands in disinfectant solution after trial in the patient was 34.6%, the rate of autoclave sterilization was 53.1%. The rates of using waste basket and sharps bin for the disposal of the bands, brackets, and archwires removed from the patients during or after treatment were 40.8% and 50.8%, respectively. Hepatitis B immunization rate was 95.4% (Table 2).
Percentage of orthodontists/residents who responded to questions regarding infection control procedure according to experience are shown in Table 3. The rate of biological indicator spore test supply for controlling autoclave sterilization of junior orthodontists with an experience of less than 20 years (50.5%) was significantly higher than senior orthodontists with an experience of more than 20 years (20%). The rate of using waste basket for the disposal of bands, brackets, and archwires removed from the patients during or at the end of the treatment of junior orthodontists (45.7%) was significantly higher than senior orthodontists (20%). The rate of using sharps bin of junior orthodontists (47.6%) was lower than senior orthodontists (64%); however, this difference was not statistically significant. The rate of washing hands before wearing gloves of junior orthodontists (51.4%) was significantly lower than senior orthodontists (80%). The rate of autoclave usage for the sterilization of dental handpieces was lower among junior orthodontists (26.7%) and senior orthodontists (36%). On the other hand, the rate of wiping the outer surface of dental handpieces with disinfectant solution was higher than autoclave usage in both junior orthodontists (57.1%) and senior orthodontists (56%). However, these differences were not statistically significant (Table 3).
Percentage of orthodontists/residents who responded to questions regarding infection control procedure according to place of work are shown in Table 4. The presence of dental assistant in private clinics (100%) was significantly higher than in university clinics (84.3%). The presence of a separated sterilization room at university clinics (97.1%) was significantly higher than other private centers. The rate of type B autoclave usage in private oral and dental health clinics (61.5%) was significantly higher than in university clinics (33.3%), and non-type B autoclave usage in university clinics (31.7%) was significantly higher than in private oral and dental health clinics (0%). The rate of annual maintenance of sterilization devices in private offices (62.5%) was significantly lower than in private oral and dental health clinics (89.3%) and university clinics (91.4%), and autoclave sterilization control in private offices (40.6%) was significantly lower than in university clinics (68.6%). The rate of supplying biological indicator spore test for controlling of autoclave sterilization in private offices (12.5%) was significantly lower than in private oral and dental health clinics (53.6%) and university clinics (55.7%). The rate of regularly keeping and storing sterilization records (28.1%) in private offices was significantly lower than in university clinics (64.3%). The rate of washing hands after removing gloves was significantly lower in private oral and dental health clinics (85.7%) than in private offices (100%) and university clinics (97.1%) (Table 4).
Percentage of orthodontists/residents who responded to questions regarding infection control procedure according to daily patient capacity are shown in Table 5. The rate of wearing protective mask and goggles during environmental cleaning/manual cleaning of instruments in facilities with a daily patient volume of 0–10 patients (34%) was significantly lower than in facilities with a daily patient volume of 10–20 patients (56%) and 20 patients and above (66.7%). The rate of wearing protective goggles/shields during treatment in facilities with a daily patient volume of 0–10 patients (34%) was significantly lower than in facilities with a daily patient volume of 20 patients and above (70.4%). The rate of influenza vaccination in facilities with a daily patient volume of 0–10 patients (7.5%) was significantly lower than in facilities with a daily patient volume of 20 patients and above (29.6%) (Table 5).
DISCUSSION
In the literature, many studies outside of Turkey relevant to the infection control procedures in dental practice were found. There are survey studies reported from Canada and the US that evaluated the compliance of orthodontists to the infection control procedures (22, 23, 30). There are, however, a few studies evaluating the compliance of orthodontists to the infection control procedures in Turkey. Various articles have been published regarding sterilization and disinfection practices in orthodontics, such as the study published in the special edition of TDB in 2000 and the reports published by Akçam and Özdiler (21) in 1999, Ozer et al. (1) in 2005, and Aksoy et al. (31) in 2011 (11). The only study that evaluated the attitudes of orthodontists towards infection control and the procedures practiced by these orthodontists was performed by Saraç and Yalçın (32) in 1995.
The results of the present study were evaluated taking into account the experience, place of work, and daily patient capacity of the orthodontists/residents. The rate of dental assistant was higher in private offices (100%) and private oral and dental health clinics (96.4%), whereas this rate was lower in university clinics (84.3%), and the difference between these facilities that was caused by understaffing in university clinics was found to be statistically significant (Table 4). When the rate of dental assistant was evaluated according to the patient volume, the rate of dental assistant was 84.9% in facilities with a daily patient volume of 0–10, 94% in facilities with a daily patient volume of 10–20, and 96.3% in facilities with a daily patient volume more than 20 (Table 5). Although the difference was not statistically significant, work load increases with daily patient volume, and accordingly, number of dental assistant increases. In the practice of experienced orthodontists, number of dental assistant was found to be higher with increasing daily patient volume.
In a study published by Topcuoglu and Kulekci (33) in 2009, progress of the dental practitioners on infection control practices within a 2-year period was evaluated in Turkey. The autoclave usage rate increased from 39% to 62%, and dry-heat sterilizer usage rate decreased from 71% to 55% in a 2-year period. In the present study, some type of autoclave usage rate between 2014 and 2015 was 72.3%, and the dry-heat sterilizer usage rate was 16.9% (Table 2). There seems to be an improvement in autoclave usage over the years among dental practitioners and orthodontists. However, autoclave usage rate could not be compared between the two groups of orthodontists as there were no studies conducted in the same period on dental practitioners and orthodontists.
In a survey study on 110 orthodontists published by Saraç and Yalçın (32) in 1995, 32.3% of orthodontists were immunized against hepatitis B, autoclave usage rate was 9%, and dry-heat sterilizer usage rate was 14.5%. In the present study, 95.4% of orthodontists were immunized against hepatitis B, type B autoclave usage rate was 40%, non-type B autoclave usage rate was 17.7%, cassette autoclave usage rate was 14.6%, and dry-heat sterilizer usage rate was 16.9% (Table 2). In recent years, type B autoclave has been established as the most appropriate device in dental practice as it possesses the highest vacuum system that is able to sterilize all types of loads; the instruments used in dental practice are mostly in type B hollow load class (30, 33, 34). In the present study, the rate of type B autoclave usage was 53.3% in private offices, 61.5% in private oral and dental health clinics, and 33.3% in university clinics. The usage rates for autoclaves other than type B and cassette autoclave were found to be lower (Table 4). The usage rate for type B autoclave was higher in private offices and private oral and dental health clinics, whereas previously purchased autoclaves other than type B were found to be used in university clinics. The usage rate for cassette autoclaves was lower than type B and non-type B autoclaves. The manufacturers recommend cassette autoclaves owing to rapid sterilization feature; however, cassette autoclaves are not suitable for orthodontic purposes (9, 34, 35). Dry-heat sterilizer performs sterilization at high temperature in prolonged duration. In addition, instruments removed from dry-heat sterilizer must be stored in ultraviolet cabinets. Otherwise, the instruments become contaminated (35). The usage rate for dry-heat sterilizer was found to be low (16.9%) in the present study (Table 2). Compared with the results of Saraç and Yalçın (32), positive but insufficient progress in the compliance to the infection control procedures observed in recent years can be attributed to the courses and training programs on the infection control. Training on infection control procedures in dental practice must be included in education program to be conducted on a regular basis, and these programs must be audited.
According to the study by McCarthy et al. (22) that evaluated 265 orthodontists and 5176 dental practitioners in 1997, 94% of the orthodontists and 92.3% of the dental practitioners were immunized against hepatitis B virus. In their study, 62.4% of the orthodontists and 81.5% of the dental practitioners reported that they changed their protective mask for each patient; the rate of using protective goggles was 88.7% in orthodontists and 96.4% in dental practitioners. The rate of hepatitis B vaccination was 95.4% among orthodontists/residents (Table 2), and this rate was consistent with the rates reported in the study by McCarthy et al. (22). In the present study, the rate of changing protective mask in each patient was 31.5%, and the rate of using protective goggles was 48.5% among orthodontists/residents (Table 2). These figures are considerably lower than those reported by McCarthy et al. (22).
According to the study by Davis et al. (23) that evaluated 140 orthodontists in 1998, the rate of using protective goggles was 95%, and the rate of washing hands after removing gloves was 99.2%. The rate of subjects washing hands after removing gloves was 95.4% (Table 2), and this rate was comparable with that reported in the study by Davis et al. (23). However, in our study, the rate of using protective goggles was considerably lower (48.5%) (Table 2).
The rates of subjects disinfecting pliers and hand instruments were 12%, 50%, and 21% in the studies by Davis et al. (23), Cash (36), and Woo et al. (37), respectively. In the studies by Davis et al. (23) and Cash (36), the rates of using autoclave for the sterilization of hand instruments were 26% and 18%, respectively; the rates of using dry-heat sterilizer were 72% and 24%, whereas the rates of using autoclave for the sterilization of pliers were 14% and 11%, and the rates of using dry-heat sterilizer were 80% and 20%, respectively. In the present study, the rate of using disinfection for the sterilization of orthodontic pliers and hand instruments was 24.6%, the rate of using autoclave was 56.9%, and the rate of using dry-heat sterilizer was 6.2% (Table 2). According to the findings of the present study, autoclave was the most commonly preferred method, and dry-heat sterilizer was the least commonly preferred method for the sterilization of pliers and hand instruments. Lower autoclave usage rates in the studies by Davis et al. (23) and Cash (36) are caused by temporal differences between the studies. In the US and other countries, infection control procedures in dental practice were established by the guidelines of the CDC published in 1993, which declared universal precautions against blood-borne pathogenic agents. This subject has attracted attention in Turkey for the first time in 2000s.
The rate of washing hands before wearing gloves was 56.9%, and the rate of washing hands after removing gloves was 95.4% in the present study (Table 2). The rate of washing hands before wearing gloves was significantly higher in senior orthodontists who had an experience of more than 20 years than in junior orthodontists who had an experience of lower than 20 years (Table 3). This difference highlights that the importance of hand washing practice in infection control was not sufficiently understood, and particularly, junior orthodontists do not pay strict attention to hand washing practice before wearing gloves.
When comparing protective goggles/shield usage rates, it was significantly lower in facilities with a daily patient volume of 0–10 patient than in facilities with a daily patient volume of more than 20 patients. Similarly, the rate of influenza vaccination was also significantly lower in facilities with a daily patient volume of 0–10 patients than in facilities with a daily patient volume of more than 20 patients. The rate of using protective mask and goggles during environmental cleaning was significantly lower in facilities with a daily patient volume of 0–10 patients than in facilities with a daily patient volume of 10–20 patients and 20 patients and above (Table 5). These findings suggest that the orthodontists attach more importance to infection control procedures with increasing daily patient volume, and in connection with this, they enhance protective measures.
In university clinics, while the rate of wiping hand instruments and orthodontic pliers with disinfectant solutions was lower, the rate of using autoclave sterilization was relatively higher than in private offices and private oral and dental health clinics. The rate of using dry-heat sterilizer was quite lower in private offices and university clinics (Table 4). Although wiping off orthodontic pliers and hand instruments without performing sterilization is not an appropriate method, this is used in all centers with lower rates observed in university clinics. As an ideal sterilization method, the rate of using autoclave does not exceed 64%. This finding suggests an inadequacy in sterilization of orthodontic pliers and hand instruments in Turkey.
The rate of wiping off the outer surface of dental handpieces was 56.9%, and the rate of using autoclave sterilization was 28.5%, whereas the rate of using dental handpiece autoclave was 14.6% (Table 2). Although wiping dental handpieces with disinfectant solutions without performing sterilization is an inappropriate and an inefficient means of sterilization, the rate of this method was considerably high. According to the study by Vendrell et al. (38) published in 2002, disinfection with ethanol, propanol (Incidur®) spray, and isopropanol (Iso-Septol) spray was not satisfactory in reducing the number of microorganisms. Dental handpieces must be therefore sterilized using the autoclave, and wiping the outer surface with a disinfectant solution must be abandoned (38).
According to the guidelines of the CDC published in 2003, dental handpieces with confirmed sterilization must be used in each patient (8). This requires keeping available dental handpieces in the number equals to the number of patients to be examined in that particular day or using rapid sequence sterilization methods.
The rate of sterilization for the purchased molar bands before trial in the patient was 27.7%, the rate of sitting in a disinfectant solution after trial was 34.6%, and the rate of autoclave sterilization was 53.1% (Table 2). Although the rate of sterilization for the purchased molar bands was low, the rate of sterilization after trial in the patient was found to be higher.
The study, published by Wichelhaus et al. (39) in 2006, reported that instruments that come into contact with blood in the mouth should be sterilized, and disinfection of instruments used outside of the mouth would be sufficient. Thermal disinfection and 5% Sekusept® Plus combined with ultrasonic bath were suggested for use in disinfection of heat-sensitive mouth retractor, photo mirror, and elastic chains (39). The rate of manual washing of hand instruments with water in the present study was 46.9%, whereas the rates of using ultrasonic cleaner and washer disinfector were 23.8% and 29.2%, respectively (Table 2).
The rate of using recycled brackets/orthodontic materials was found to be 19.2% (Table 2). In a study published by Oshagh et al. (40) in 2012, softening of archwires was reported after sterilization in the autoclave; however, this change was reported to be at low levels and does not pose a problem in clinical practice (40).
The rate for the presence of a separated sterilization room was 65.6% in private offices, 85.7% in private oral and dental health clinics, and 97.1% in university clinics (Table 4). The presence of a separated sterilization room is particularly important for the applicability of infection control procedures. The presence of a separated sterilization room carries a particular importance owing to risk of dispersion of infected particles while washing the instruments, evacuation of the vapor during autoclave cycle, inhalation of disinfectant agents, and protecting the sterility of the sterilized instruments. However, the rate of a separated sterilization room was particularly lower in private offices owing to inadequate physical conditions.
The rate of biological indicator spore test supply for controlling autoclave sterilization was significantly higher among junior orthodontists with an experience of less than 20 years than among senior orthodontists with an experience of more than 20 years. Whereas the rate of using waste basket for the disposal of bands, brackets, and archwires removed from the patients during or at the end of the treatment was higher in junior orthodontists, the rate of using sharps bin and metal waste bin was higher in senior orthodontists (Table 3). These results indicate an improvement in student education and increasing consciousness regarding infection control and sterilization in educational curriculums. However, the present study found that junior orthodontists do not show particular attention to the disposal of bands, brackets, and archwires removed from the patients into the infected waste bin.
The rate of annual maintenance for sterilization devices and using biological indicator spore test in autoclave sterilization control were significantly lower in private offices than in private oral and dental health clinics and university clinics. The rate of using autoclave sterilization control and regularly keeping and storing of sterilization records were significantly lower in private offices than in university clinics (Table 4). These results clearly indicate that maintenance and control procedures are more meticulously performed with institutionalization and increasing audit rates.
The most appropriate method for evaluating the compliance of orthodontists to infection control procedures is a survey study. However, in the present study, adequate feedback from orthodontists has not been achieved despite all our efforts. It would be better if the percentage of participation was higher so that the results could be more satisfying.
CONCLUSION
Although hepatitis B immunization rate was high among orthodontists/residents (95.4%), the rate of using protective goggles during treatment (48.5%) and the rate of using a separate protective mask for each patient (31.5%) were low.
During sterilization procedure, the usage rate for type B autoclave was higher than other devices. The usage rates for type B autoclave, non-type B autoclave, cassette autoclave, and dry-heat sterilizer were 40%, 17.7%, 14.6%, and 16.9%, respectively, and not at sufficient levels.
Although the usage rate for autoclave in sterilization of hand instruments and orthodontic pliers was higher in university clinics (64.3%) than in private offices (53.1%) and private oral and dental health clinics (42.9%), 24.6% of orthodontists used disinfectants in this procedure.
The rate of cleaning dental handpieces with wipes without performing sterilization was considerably high (56.9%).
In university clinics, the rate of using a specially produced device (handpiece autoclave) in sterilization of dental handpieces was considerably low (18.6%).
The rate of using biological indicator in autoclave sterilization control was lower in senior orthodontists (20%) who had an experience of more than 20 years than in junior orthodontists (50.5%).
The rate of using protective goggles during treatment was higher in facilities that had a higher daily volume of patient (70.4%); however, the rate of using a separate protective mask in each patient was lower (25.9%).
The rate of using examination gloves instead of thick kitchen-type gloves during cleaning of instruments and environmental cleaning was 76.9%.
The rate of disposing bands, brackets, and archwires into the waste basket instead of sharps bin was 40.8%.
Although the rate of sterilization of molar bands after purchase was low (27.7%), the rate of sitting molar bands in disinfection solution after trial was 34.6%, and the rate of sterilization of molar bands after trial was found to be 65.4%.
Orthodontists attach more importance to infection control procedures with increasing daily patient volume, and in connection with this, they enhance protective measures.
In conclusion, based on these study findings, it is obvious that there is a need for improving the compliance to the infection control procedures in the practice of orthodontics in Turkey. We, therefore, consider that training on the compliance to the infection control procedures must be taken into the scope of doctoral and residency training, knowledge of previous graduates must be updated, the training programs should be repeated on a regular basis through endeavors of dental association, and the practice of professionals should be audited.
Appendix 1. Survey Form
Infection Control in Orthodontics
-
How long have you been working as a dental practitioner/orthodontist?
0–5 years
6–10 years
11–15 years
16–20 years
more than 20 years
-
Place of work?
Private office
Private oral and dental health clinic
Public oral and dental health clinic/state hospital
University clinics
-
Daily patient volume?
0–5
6–10
11–15
16–20
>20
-
Number of dental assistant?
0
1
2
3
4
5
>5
-
Is there a written infection control program at your clinic?
Yes
No
-
Is there a separated sterilization room?
Yes
No
-
How do you perform sterilization of the instruments?
Manually with water
Ultrasonic cleaner
Washer disinfector
-
Is there a separated instrument washing sink separate from the hand washing sink?
Yes
No
-
Sterilization devices used?
N type autoclave
B type autoclave
S type autoclave
Cassette autoclave
Dry-heat sterilizer
-
Is annual maintenance performed for sterilization devices?
Yes
No
-
Do you perform cleaning of water tank of the autoclave?
Yes
No
-
Packing of instruments to be sterilized in the autoclave?
Metal tray
Special tray
Autoclave bag
Wrap
I do not pack
-
Which methods do you use in the control of autoclave sterilization?
Chemical
Biological
Chemical+Biological
Bowie - Dick test
I do not use
-
How do you supply biological indicator spore test in the control of autoclave sterilization?
Spore test by mail
Branded tests
I do not perform biological control
-
Do you regularly keep and store sterilization records?
Yes
No
-
How do you sterilize dental handpieces?
In the autoclave
In a dedicated device (dental handpiece autoclave)
Wiping the outer surface with disinfectant solution
-
How do you sterilize hand instruments/orthodontic pliers?
Dry-heat sterilizer
Autoclave
Cassette autoclave
Wiping with a disinfectant solution
-
Do you sterilize molar bands after purchase?
Yes
No
-
How do you sterilize molar bands after trial in the patient?
Dry-heat sterilizer
Autoclave
Cassette autoclave
Sitting in disinfectant solution
-
Where do you dispose the bands, brackets, and archwires you remove from the patients during or after treatment?
Waste basket
Sharps bin
Metal waste bin
Infected waste bin
-
Do you use recycled brackets/orthodontic materials?
Yes
No
-
Do you disinfect impressions or appliances to be delivered to an outer laboratory?
Yes
No
-
Do you have a written communication line with the outer laboratory?
Yes
No
-
Do you know that biofilms develop in the dental unit water lines requiring cleaning?
Yes
No
-
Where do you place sharps bin?
At the clinic
In the sterilization room
-
How do you perform environmental surface cleaning?
I cover with dedicated cloths.
I disinfect.
-
Which type of gloves do you use during cleaning of instruments and environmental cleaning?
Examination gloves
Kitchen-type gloves
I do not wear
-
Do you wear protective mask and goggles during environmental cleaning/manual cleaning of instruments?
Yes
No
-
Do you wash your hands before wearing gloves?
Yes
No
-
Do you wash your hands after removing gloves?
Yes
No
-
Do you use a separate protective mask for each patient?
Yes
No
-
Do you wear protective goggles/shields during treatment?
Yes
No
-
Have you had hepatitis B vaccine?
Yes
No
-
Have you had influenza vaccine?
Yes
No
-
When did you have your last tetanus vaccine?
0–5 years
6–10 year
11–15 years
16–20 years
>20 years
What are your comments regarding infection control in dental practice/orthodontics?
Footnotes
Ethics Committee Approval: N/A.
Informed Consent: N/A.
Peer-review: Externally peer-reviewed.
Author Contributions: Concept - S.F.; Design - S.F.; Supervision - S.F.; G.K.; Materials - G.S., S.F.; Data Collection and/or Processing - H.D.; Analysis and/or Interpretation - A.D.G.Ç.; Literature Search - A.D.G.Ç.; Writing Manuscript - A.D.G.Ç.; Critical Review - A.D.G.Ç.
Conflict of Interest: The authors have no conflicts of interest to declare.
Financial Disclosure: The authors declared that this study has received no financial support.
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