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. 2022 Feb 1;88(1):201–237. doi: 10.1111/prd.12419

TABLE 3.

Characteristics of the included studies

Functional evaluation of OH‐QoL and rehabilitation with dental implants
Ref. number Authors Study design Population Objective/primary outcome Assessment tool/ procedure Results
40 Farzadmoghadam et al (2020) Retrospective study 102 patients rehabilitated with various implant‐supported reconstructions Relationship between OH‐QoL and general health‐related quality of life

Subjective assessment:

visual analog scale, EuroQol‐5D, and the OHIP‐14 questionnaire

Results indicated an increase in general and oral health‐related quality of life after implant treatment. There was a positive weak relationship between OH‐QoL and general health‐related quality of life
41 Yeung et al (2020) Non‐randomized controlled trial

104 patients from a private practice were assigned to 3 treatment protocols:

  1. the conventional treatment in which implants were inserted after flap elevation without guiding templates;

  2. the guided surgery/conventional loading group

  3. the guided surgery/immediate loading group

Comparison of 3 prosthetic implant protocols

Subjective assessment:

Oral Impacts on Daily Performances and Oral Satisfaction scale

OH‐QoL improved more when the implants were loaded immediately than when the prosthetic rehabilitation was delayed
43 Fonteyne et al (2021) Prospective study 21 fully edentulous patients received implant‐supported overdentures (2 implants connected with a bar) Assessment of articulation and its alteration, oro‐myofunctional behavior during 3 stages: pretreatment, during provisional, and after final reconstruction

Assessment:

by speech therapists, OH‐QoL, visual analog scale

OH‐QoL increased over treatment process.

No impact on speech or oro‐myofunction was found after treatment

44 Dellepiane et al (2020) Prospective study 25 patients with compromised dentitions were rehabilitated with implant‐supported full arch immediate loading rehabilitation Assessment of OH‐QoL before, during, and after completion of treatment OH‐QoL using 4 questionnaires specifically designed for this study to investigate pain, comfort, oral hygiene habits, esthetics, masticatory ability, phonetics, and general satisfaction

96% of the patients did not show esthetic concerns after 4 mo of rehabilitation

92% of the patients did have difficulty eating after 4 mo of rehabilitation

OH‐QoL was significantly improved after treatment

45 Zhang et al (2019) 5‐y prospective study 103 geriatric patients with a history of deficient complete dentures OH‐QoL of patients treated with mandibular two‐implant retained overdentures

Subjective assessment:

Own questionnaire (40 items, 4 point rating scale: “not at all” ‐ “extremely”)

Objective assessment: Woelfel's index

The support of a full dental prosthesis supplemented by 2 implants improves the retention and stability of the prosthesis significantly

Implant‐supported mandibular dentures yielded the best results, as was reflected in reduced functional complaints, complaint frequency and intensity of complaints. Overall patient satisfaction correlated negatively with technical complications

46 Doornewaard et al (2019) 3‐y prospective study, split mouth

Report of two studies.

First study:

26 patients received 2 implants

Second study:

23 patients received 2 implants

Impact of supported mandibular overdenture on OH‐QoL

Subjective assessment:

OHIP‐14 questionnaire

Implant‐supported mandibular overdenture significantly improves the OH‐QoL
47 Yao et al (2018)

Systematic

review

Comparing OH‐QoL outcome measures of implant‐supported fixed complete dentures and overdentures

Subjective assessment:

OHIP‐14 questionnaire, OHIP‐49 questionnaire, visual analog scale, Likert scale

Fixed and removable implant retained prostheses were rated similarly

Only cleansability was rated differently

Inconsistent results indicate that the question whether to restore an edentulous patient with either fixed or removable implant prostheses cannot be solely answered by assessing patient‐reported outcomes

48 Coutinho (2021) 5‐y prospective study 30 patients Impact on OH‐QoL of patients rehabilitated with single‐implant mandibular overdentures

Subjective assessment:

OHIP‐Edent

Peri‐implant soft tissue conditions did not change significantly over 5 y. Statistically significant improvement in OH‐QoL was assessed after 5 y compared with baseline

Comfort, stability, and ability to masticate was significant increased for single‐implant mandibular overdentures and all evaluation periods

49 Kutkut et al (2018) Systematic review Comparing OH‐QoL outcome measures of conventional complete dentures with unsplinted implant‐retained overdentures

Subjective assessment:

OHIP‐ questionnaire

Visual analog scale

Objective assessment:

masticatory performance test

Implant‐retained overdentures were associated with significantly better patients' masticatory performance and oral health‐related quality of life.

Significantly higher ratings of overall satisfaction, comfort, stability, ability to speak, and ability to chew were associated with patients rehabilitated with mandibular unsplinted implant‐retained overdentures than conventional complete dentures

50 Sivaramakrishnan et al (2017) Systematic review Comparing patient satisfaction with mini‐implant vs standard diameter implant overdentures

Meta‐analysis of subjective assessment:

Oral health‐related quality of life

Visual analog scale

OHIP‐14

Mini‐implant‐supported compared with standard diameter implant‐supported overdentures indicated significantly better patient satisfaction levels
51 Sivaramakrishnan et al (2016) Systematic review Comparing OH‐QoL outcome measures of implant‐supported mandibular overdentures and conventional dentures

Meta‐analysis of subjective assessment:

OHIP‐ questionnaire

Except for physical pain statistically significant better patient satisfaction levels were found for patients treated with implants
52 Allen et al (2006) Randomized clinical trial (3 mo)

1st group: 62 patients receiving implants

2nd group: 56 patients receiving conventional denture

Comparing OH‐QoL outcome measures of implant‐retained mandibular overdentures and conventional complete dentures

Subjective assessment:

OHIP‐ questionnaire

Objective assessment

Validate denture satisfaction scale

Patients receiving implants showed significantly higher OHIP score changes than patients refusing implant treatments
53 Allen et al (2001) Prospective study

1st group: 20 patients; edentulous for a mean time of 23.1 y and had worn a mean of 6.7 sets of complete denture prostheses

2nd group: 20 patients; edentulous for a mean time of 19.9 y and had worn a mean number of 4.9 sets of complete denture prostheses

3rd group: 35 patients;

edentulous for a mean time of 27.1 y and had received a mean number of 3.4 sets of complete dentures

Comparing OH‐QoL outcome measures of implant‐supported overdentures and conventional dentures

Subjective assessment:

OHIP‐ questionnaire and validate denture satisfaction and expectation scale (Likert response format: 1‐5 = “totally satisfied” to “not at all satisfied”)

Patients’ satisfaction improved even in the group of patients who preferred implant‐stabilized prostheses but instead were treated with conventional prostheses. But the extent of patients’ satisfaction was higher with patients who received their desired treatment. Therefore patient expectations did not indicate them to be a good predictor of treatment outcome
54 Heydecke et al (2005) Randomized clinical trial

102 patients, aged 35‐65 y, had been edentulous for at least 10 y

  1. group: patients received mandibular conventional complete dentures

  2. group: patients received mandibular overdentures retained by two implants

Assessing the impact of conventional and implant‐supported prostheses on social and sexual activities in edentulous adults

Subjective assessment:

OHIP‐ questionnaire and Social Impact Questionnaire

Eating, speaking, kissing, and yawning were significantly improved in the group receiving implant‐supported prostheses

Nevertheless there were only weak correlations found between the two sexual activity items (uneasiness when kissing and during sexual relations) and the OHIP scores

55 Zembic et al (2014) Prospective clinical study

21 patients being edentulous in the maxilla and encountering problems with their existing dentures were included

12 received a new set of conventional dentures; as a consequence of insufficient denture stability (9: 2 women and 7 men), the existing dentures were adjusted by means of relining or rebasing

All patients received implant‐supported dentures on two retentive anchors

Comparing OH‐QoL outcome measures of implant‐retained maxillary overdentures and conventional dentures

Subjective assessment:

OHIP‐ questionnaire and visual analog scale

Patient satisfaction significantly increased for implant‐supported dentures compared with old dentures in all seven OHIP subgroups, as well as for cleaning ability, general satisfaction, ability to speak, comfort, esthetics, and stability
56 Schuster et al (2020) Prospective longitudinal clinical study 20 patients rehabilitated with implant‐retained mandibular overdenture after 2 and 3 y

To investigate evolution of masticatory function, OH‐QoL, and prosthetic

occurrences of implant‐retained mandibular overdenture wearers according to mandibular bone atrophy over 3 y of usage

Subjective assessment:

DIDL questionnaire and

OHIP‐14 questionnaire

Masticatory function and OH‐QoL are not related to mandibular bone atrophy until 3 y after implant‐retained mandibular overdenture rehabilitation

The DIDL questionnaire showed no significant difference for almost all domains, except for the general performance domain, where a moderate effect was found for the third y

57 Fonteyne et al. (2021) 3‐y prospective study 21 patients receiving implant‐supported overdentures Impact of four implant‐supported overdenture in the maxilla on OH‐QoL and speech of patients

Subjective assessment:

OHIP‐14 questionnaire and visual analog scale

Number of articulation disorders decreased but was not statistically significant

Overall satisfaction improved after insertion of connection of implant bar

All seven domains improved in OH‐QoL for implant‐supported overdentures compared with conventional dentures

58 Garcia‐Minguillan (2021) Cross‐sectional study

Test group: 85 endentulous patients

42: conventional denture

43: implant‐retained overdenture

Control group: 50 patients with healthy natural dentition

Comparing OH‐QoL of patients with fully dentate subjects and edentulous patients

Subjective assessment:

OHIP‐14, OHIP‐20, and Quality of Life with Implant‐Prostheses‐10 questionnaire

Patients with natural dentitions were most critical

Patients with implant overdentures showed better OH‐QoL than patients with conventional dentures

59 Kusumoto et al (2020) Prospective study 72 patients rehabilitated with implant fixed complete dentures or implant overdentures Association between implant fixed complete dentures and implant overdentures on OH‐QoL

Subjective assessment:

OHIP‐49 questionnaire

Except for the perception of masticatory function, both implant‐fixed complete dentures and implant overdentures indicated comparable OH‐QoL
60 Matthys et al (2019) Comparative clinical cohort

34 patients rehabilitated with balls

56 patients rehabilitated with locators

To assess 5 y of clinical implant outcome, prosthetic maintenance, cost, and OH‐QoL of two cohorts receiving 2 implant over dentures on ball or stud abutments

Subjective assessment:

OHIP‐14 questionnaire

Balls and locators yield stable 5‐y implant outcome and improved OH‐QoL. OHIP‐14 declined from 18.1 to 2.7 for both attachment modalities

Locators required more maintenance and resulted in a lower retention. Maintenance costs are minimal but may affect OH‐QoL

61 Brandt (2021) Retrospective study 122 patients Comparing OH‐QoL of patients receiving ball vs Locator attachments for implant‐retained overdentures

Subjective assessment:

OHIP‐14

Patients receiving Locator attachments indicated significant better OH‐QoL compared with patients receiving balls attachment
62 Negoro (2021) Prospective study 30 patients with Kennedy class I or II and distal extension defects of 3 or more teeth Comparing OH‐QoL of patients with conventional removable partial dentures, (short) implant‐assisted removable partial dentures, and with or without magnetic attachments

Subjective assessment:

OHIP‐49

The OH‐QoL was significantly increased for patients receiving implant‐assisted removable partial dentures with magnetic attachments compared with rehabilitation without magnetic attachments
63 Zhou Up to 5‐y retrospective study

48 patients treated with implant‐retained mandibular overdentures

Group A: 26 patients treated with bar attachments

Group B: 22 patients treated with magnetic attachments

Comparing OH‐QoL of patients receiving ball vs magnetic attachments for implant‐retained mandibular overdentures

Subjective assessment:

visual analog scale

Peri‐implant probing depth and plaque index were significantly better for the magnetic attachment group compared with the bar attachment group

OH‐QoL was not statistically significantly different between both groups

Nevertheless, patients treated with bars had significantly more difficulties to clean their reconstructions than patients treated with magnetic attachments

64 Gündoğar (2021) Cross‐sectional study 109 geriatric patients Impact of peri‐implant disease on OH‐QoL in a geriatric population

Subjective assessment:

OHIP‐14

Prevalence of peri‐implantitis was 30%. Prevalence of peri‐implant mucositis was 24%

Statistical analysis failed to reveal any significance between patients with peri‐implantitis or peri‐implant mucositis. Plaque index and gingival index were statistically significantly correlated with total OHIP‐14 score

65 Thomason et al (2007)

Systematic

review

How do reconstructions affect patient‐reported outcomes of conventional dentures vs implant‐supported overdentures QoL, OH‐QoL, patient satisfaction (with a range of parameters) The overall rating for OH‐QoL of patients receiving implant‐supported overdentures was not significantly better than for conventional dentures
66 Tsakos et al (2006) National Diet and Nutrition Survey

Sample of the National Diet and Nutrition Survey (people aged ± 65 y)

407 dentate and 346 edentate participants

OH‐QoL of life correlations in a national geriatric sample

Subjective assessment:

OIDP ‐ questionnaire

Patients with > 8 occluding pairs of teeth were 2.66 times, and those with up to 2 anterior occluding pairs, were 3.00 times less likely to report oral impacts

Edentate participants with inadequate denture adaptation and subjects with inadequate denture retention were more likely to report oral impacts than the remaining edentate patients In each case

OH‐QoL is significantly related to the number of occluding pairs of natural teeth among the dentate and denture quality among the edentate

67 Steele et al (2004) National sample

UK, 1998: Adult Dental Health Survey

Australia, 1999: National Dental Telephone Interview Survey

Impact of tooth loss on OH‐QoL Subjective assessment: OHIP‐14

Patients with average number of teeth showed significantly better scores than all other groups with less teeth

Important variables influencing OH‐QoL are age, number of teeth, and cultural background

Australian‐ and British‐born groups showed better overall scores compared with first‐generation immigrants from elsewhere

68 Wong et al (2005) Retrospective study 233 patients; 60‐80 y old Impact of tooth loss on emotion/OH‐QoL for edentulous and partially dentate patients Subjective assessment: General Oral Health Assessment Index

22% of patients had difficulty in accepting tooth loss

Edentulous patients were significantly more satisfied with their prostheses compared with partially dentate patients

69 Kurosaki et al (2020) Retrospective study 105 partially edentulous patients received 1 out of 3 prosthetic treatments and were followed 6 y Long‐term performance of 3 prostheses: implant‐supported fixed denture, FPD, and removable partial denture in terms of survival and OH‐QoL

Subjective assessment:

Oral Health‐related Quality of Life, psychological health‐related quality of life, a previously validated questionnaire, which was developed based on the OHIP

Implant‐supported fixed denture, FPD, and removable partial did not yield statistical significantly differences in terms of OH‐QoL
70 Dong et al (2019) Prospective study 373 patients OH‐QoL outcome measures of patients rehabilitated with single implants

Subjective assessment:

OHIP‐14, Oral implant profile questionnaire, visual analog scales, open‐ended question: “What was the most concerning aspect that affected your satisfaction in the implant treatment?”

Patients treated with bone augmentation and those with a longer period of tooth loss are significantly less satisfied

Patients are most concerned about survival time success rate and survival time of implants

71 AlZarea et al (2017) Prospective study 79 partially edentulous patients OH‐QoL of partially edentulous patients rehabilitated with implant‐supported single crowns or FPDs (pre‐and post‐treatment)

Subjective assessment:

OHIP‐49 (pre‐and post‐treatment)

From baseline to 1st y of observation a significant increase of patients’ OH‐QoL in terms of functional limitation, physical pain, psychological discomfort, physical disability, psychological disability, and social disability but not handicap was found

From baseline to 2nd and 3rd y all variables also significantly indicated an increase of OH‐QoL

There were no significant differences between gender

72 Gerritsen et al (2010) Systematic review Impact of tooth loss on OH‐QoL

Subjective assessment:

OHIP‐49, OHIP‐14, GOHAI, OIDP, ad hoc satisfaction questionnaires

The results indicated that not only number of tooth loss, but location and distribution of missing teeth, affect the reduction of OH‐QoL. Furthermore, the extent and severity of impairment seems to be context‐dependent (eg, cultural background)
73 AlZarea et al (2016) Retrospective study 92 patients OH‐QoL of patients rehabilitated with dental implants

Subjective assessment:

OHIP‐14

Results from the OHIP‐14 questionnaire revealed that patients with dental implants were satisfied with their OH‐QoL
74 Sargozaie et al (2017) Cross‐sectional study 73 patients OH‐QoL of patients rehabilitated with dental implants (pre‐and post‐treatment)

Subjective assessment:

OIDP

Before surgery, the most common problems reported were eating, smiling, laughing, and embarrassment.

After surgery, eating, speaking clearly, clean teeth or dentures, light physical activities, smiling, laughing, showing teeth without discomfort and embarrassment, emotional conditions, enjoying communication with others, and job‐related activities significantly increased OH‐QoL

But after surgery the amount of sleep and resting did not improve.

After implantation, the place of residence, education, and gender did not show a significant association with OH‐QoL

75 Reissmann et al (2017) Systematic review At least 50 patients OH‐QoL of patients rehabilitated with implant‐supported prosthesis

Subjective assessment:

OHIP‐ questionnaire, Geriatric Oral Health Assessment Index, UK oral health‐related quality of life measure, and DIDL

For partially dentate patients, implant‐supported FDPs did not show superiority over conventional fixed dental prostheses

Implant‐supported FDPs indicated moderate superiority over conventional removable dental prostheses

For edentulous patients that are, at baseline, highly impaired and requested implant treatment,

improvements of OH‐QoL was superior for implant‐supported dentures compared to conventional dentures

76 Cadel‐Marti et al (2015) Retrospective study 57 patients with severely atrophic maxillae Comparing OH‐QoL of patients treated with partial positioned implants vs conventional implants supporting fixed full‐arch prostheses

Subjective assessment:

OHIP‐14 questionnaire and visual analog scale

Patients treated with partial positioned implants (more coverage of palate) vs conventional implants supporting fixed full‐arch prostheses did not show reduction of OH‐QoL
77 Torres et al (2011) Prospective study

50 patients with implant‐supported mandibular overdentures

50 patients with conventional mandibular dentures

Impact of personality traits on OH‐QoL of patients treated with conventional mandibular dentures and implant‐supported overdentures

Subjective assessment:

OHIP‐14 questionnaire and Neuroticism Extraversion Openness Five‐Factors Inventory (five personality domains)

Patients with conventional mandibular dentures reported higher levels of impact on OH‐QoL compared with patients with implant‐supported mandibular overdentures

OH‐QoL is significant associated with personality traits (mainly neuroticism) related to implant‐supported or conventional removable complete dentures

Esthetic assessment of OH‐QoL in conjunction with oral rehabilitation with dental implants
Ref. number Authors Study design Population/ examiner Objective Assessment Tool/ Procedure Results
78 Yu et al (2013) 6‐month prospective study 238 patients Impact of missing anterior teeth rehabilitated with implants on OH‐QoL

Subjective assessment:

OHIP‐14

After crown restoration, OH‐QoL of patients increased statistically significantly compared with the situation before implantation
79 Wang et al (2021) Cross‐sectional survey 95 patients receiving fixed implant‐supported restorations Assessment of patients’ satisfaction regarding function (phonetics, chewing comfort, stability, cleansability) and esthetics in a peridontal practice 10 y after implant placement

Subjective assessment:

visual analog scale, OHIP, and Psychosocial Impact of Dental Aesthetics Questionnaire

Mean visual analog scale score, mean OHIP, and mean Psychosocial Impact of Dental Aesthetics Questionnaire scores were 93%, 11.3, and 20.5, respectively. Therefore patients showed high satisfaction with their restorations
82 Vaidya et al (2015) Evaluation of photographs

Evaluation of 20 intra‐oral photographs:

14 examiners (2 orthodontists, 2 prosthodontists, 2 oral surgeons, 2 periodontists, 2 dental technicians, 2 dental assistants, and 2 postgraduate students in Implant Dentistry)

Impact of clinicians with diverse dental backgrounds on the evaluation of maxillary implant‐supported single‐tooth replacements

Objective assessment:

Pink Esthetic Score/White Esthetic Score and the modified Implant Crown Esthetic Index

Pink Esthetic Score/White Esthetic Score and the modified Implant Crown Esthetic Index showed reliable estimates of esthetic outcomes

The degree of specialization of the clinician affect the esthetic evaluation for both indices: Pink Esthetic Score/White Esthetic Score and the modified Implant Crown Esthetic Index.

Prosthodontics were most critical. DAs and periodontists provided favorable ratings compared with other specialties

83 Chang et al (1999) Evaluation of photographs

Intra‐oral and extraoral photographs were taken from 29 patients with 41 single implant‐supported crowns in the maxillary anterior region and were included

5 prosthodontists evaluated the photographs

Are prosthodontics’ and patients’ evaluations of esthetic outcomes of implant‐supported single‐tooth replacements different?

Subjective assessment:

visual analog scale

Subjective assessment was found to be higher for all variables compared with the clinician’s evaluation

Factors considered important from the clinician’s view may not be decisively important for patients’ satisfaction

84 Esposito et al (2009) Evaluation of photographs

30 patients evaluated their own results

10 clinicians evaluated all 30 patients’ results

Are prosthodontics’ and patients’ evaluations of esthetic outcomes of implant‐supported single‐tooth replacements different?

Subjective assessment:

visual analog scale

Evaluation of intra‐oral and extraoral photographs

Clinicians’ responses were less in agreement than patients’ responses

Agreement between patients’ and clinicians’ responses was poor

85 Wittneben et al (2018) Systematic review 816 implant‐supported reconstructions were analyzed by patients Patient‐reported outcome with focus on esthetics

Subjective assessment:

visual analog scale

Visual analog scale evaluation (rated by patients) for esthetic outcome of fixed dental prostheses was high

For the implant‐supported FDPs and the surrounding mucosa, the visual analog scale evaluation from patients was also high

No effect on patients’ satisfaction of the definitive implant‐supported fixed dental prostheses with the following parameters: individual restorative materials, implant neck design (ie, tissue or bone level type implants), and the use of a fixed provisional

87 Hosseini et al (2013) 3‐y prospective study Supported, single tooth restorations

Comparing patient‐reported outcome of all‐ceramic vs metal‐ceramic crowns of implant reconstructions.

Subjective assessment:

OHIP‐49

Objective assessment:

Copenhagen Index Score 67

The 3‐y survival rate for implants was 100% and for abutments was 97%

Significantly more marginal bone loss was found for gold‐alloy abutments compared with zirconia abutments

The most frequent technical complication was loss of retention, which was only found in metal‐ceramic crowns

All‐ceramic restorations showed more frequently biologic complications than metal‐ceramic crowns. Marginal adaptations of all‐ceramic crowns were significantly less optimal than metal‐ceramic crowns. Significant better color match for all‐ceramic compared with metal‐ceramic restorations was reported from professionals. No significant discrepancies in patients’ satisfaction for esthetic outcome was found for patients rehabilitated with all‐ceramic vs metal‐ceramic restorations

Cost‐related evaluation of OH‐QoL and rehabilitation with dental implants
Ref number Author Study design Population Objective Assessment tool/Procedure Results
93 MacEntee et al (1998) Framework for analysis and preliminary outcomes Economic aspects of complete dentures and implant‐related reconstruction Analysis of measurement, distribution, impact, and management: four foundations for the framework There are physiologic and psychosocial costs and benefits to both the conventional denture and the implant prosthesis, which indicates that neither method is distinctly superior. The physiologic costs are low and the psychosocial costs are similar for both treatments, whereas the direct financial costs associated with the implant prosthesis are substantially higher
94 Bragger et al (2005) Retrospective study

37 received 41 conventional three‐unit FPDs

52 patients received 59 single crowns on implants (I)

Economic aspects of single‐tooth replacement Comparison of the two treatments in terms of treatment time, number of visits, monetary and opportunity costs, and comparison Treatment time was similar, I. required more visits. Total costs were lower for I. Costs for treatment of complications were similar for both groups. Overall, for a short period of time, implant reconstruction showed a more favorable cost/effectiveness ratio
96 Hettiarachchi et al (2018) Systematic review The cost‐effectiveness of oral health interventions: a systematic review of cost‐utility analyses Assessment of cost‐utility analysis in oral health interventions

From 2011 to 2016, the cost‐utility analysis of oral health interventions increased

Consolidated Health Economic Evaluation Reporting Standards were used to evaluate the cost‐effectiveness

97 Jensen et al (2017) Prospective study

30 patients with full upper dentures and complaints regarding their bilateral mandibular free‐ending removable partial dentures were included

All patients received 4 implants in the premolar region and new removable partial dentures

Cost‐effectiveness of implant‐supported mandibular removable partial dentures

Cost‐effectiveness analysis comparing conventional removable partial dentures with implant‐supported removable partial dentures in patients with edentulous maxilla

Treatment effect was expressed by the Dutch Oral Health Impact Profile Questionnaire OHIP‐NL49

Depending on the choice of outcome measure and monetary threshold, supporting a removable partial denture with implants is cost‐effective when payers are willing to pay > 80 Euros per OHIP point gained
98 Palmqvist et al (2004) Prospective randomized clinical study

11 patients received fixed prosthesis on 3 implants

6 patients received overdentures on 3 implants and a Dolder bar

Comparing prosthodontic production time and costs in implant‐supported fixed prostheses vs overdentures in the edentulous mandible Assessment of laboratory and clinical working hours along with cost evaluation Mean clinical working hours were 3.1 in the fixed prosthesis group and 4.1 in the overdenture group. Mean laboratory working h were 12.5 in the fixed prosthesis group and 7.7 in the overdenture group. Total laboratory costs were on average about 1700 US dollars for the fixed prosthesis and 1350 US dollars for the overdenture
99 Ravida et al (2018) Retrospective study

45 patients

test group: 149 implants

control group: 111 implants

minimum follow‐up: 5 y

mean follow‐up: 9.6 y

Clinical outcomes and cost effectiveness of computer‐guided vs conventional implant‐retained hybrid prostheses Analysis of patient‐focused costs in terms of necessary costs of diagnostic, therapeutic, and follow‐up procedures

Biologic and technical complications did not show significant differences between groups

Incidence of implant loss was less observed in test group

The initial cost for the guided implant placement group was significantly higher

For the prosthetic complication and total cost, no significant difference was detected between both groups

100 Ravida et al (2013) Retrospective study

145 patients:

40 nonsplinted crowns

52 splinted crowns

53 implant‐supported bridge

382 bone‐level implants:

120 nonsplinted crowns

106 implant‐supported bridge

156 splinted crowns

mean follow‐up: 76.2 mo

Comparing the cost‐effectiveness of three different types of implant‐supported FDPs: rehabiliation of 3‐unit edentulous area Cost‐effectiveness analysis comparing nonsplinted crown, splinted crowns, implant‐supported bridge

Implant survival rates were 92.5% for nonsplinted crowns, 100% for implant‐supported bridges, and 88.5% for splinted crowns

Implant survival rates were significantly different between the implant‐supported bridge and splinted crowns groups

Nonsplinted crowns and splinted crowns showed higher total costs compared with the implant‐supported bridge group

A 3‐unit implant‐supported bridge on 2 implants showed better results in the long term compared with nonsplinted crowns and splinted crown solutions on implants

Abbreviations: DAs, Dental Assistants; DIDL, dental impact on daily living; FPDs, fixed partial dentures; GOHAI, Geriatric oral health assessment index; OHIP, oral health impact profile; OH‐QoL, oral health‐related quality of life; OIDP, oral impacts on daily performances.