Klyn 2001.
| Methods | Trial design: RCT‐split mouth design Location: Keesler Air Force Base, United States Air Force, USA Setting: dental operatory Language: English Number of centres: 1 Study period: not mentioned Funding source: no financial interest in any products, equipment or companies cited in the manuscript Study protocol: not available |
| Participants | Age: 21 to 63 years Sex: not reported Total number of participants: 15 Inclusion criteria: volunteers whose treatment plan included complete mouth ultrasonic scaling without any history of cardiac or renal or hepatic or blood dyscrasia or immunosuppresive problems, antibiotic intake and not undergone dental treatment 3 months prior to the study period. Exclusion criteria: breastfeeding women Number randomised: not reported Randomisation of quadrant: done Random sequence generation: not reported Allocation concealment: not reported Method of blinding: the medical laboratory technician who recorded the CFU was blinded and reported based only on the culture plate number. Number evaluated (withdrawals/missing participants): none |
| Interventions | Comparison: ultrasonic scaling done on each quadrant. Each group was treated in a different room. Group 1: control (no aerosol reduction device (ARD) or preoperative CHX) Group 2: ARD only Group 3: preoperative CHX rinse only Group 4: use of both ARD and CHX rinse Washout period: not reported Number of intervention groups: 3 Intervention: Group name: ARD (Group 2) Description of intervention: SAFETY Suction ARD was attached to the high‐speed evacuation system and the cavitron handpiece Any co‐interventions: saliva ejector was used in all groups Comparator: Group name: control (Group 1) Group name: teeth were scaled using ultrasonic scaler for 5 minutes using a newly purchased 30,000 hz scaler and distilled water without ARD or CHX rinse. Number of control groups: 1 |
| Outcomes | Outcome name: reduction in level of contamination in aerosols Outcome measurement: CFU (using blood agar plates) aerobic culture were done. 3 culture plates were placed on a plexiglass mount 6 inches and 1 agar plate on left side 2 feet from patient's oral cavity. Effect estimate: mean (SD) Key conclusions: ARD or preoperative CHX rinse reduces bacterial contamination in aerosols during ultrasonic scaling. ARD reduces more contamination when compared to preoperative CHX rinse and combination of ARD and preoperative CHX rinse had no additional benefit when compared to the use of ARD alone. |
| Notes | Washout period not reported |