IADR Abstract Archives
A 15 Year Comparison of Cantilevered and Fixed-Fixed Resin-Bonded Bridges
Objectives: This prospective study compared the clinical performance and patient satisfaction of two-unit cantilevered (CL2) and 3-unit fixed-fixed (FF3) resin-bonded bridges (RBB) for replacement of a single maxillary permanent incisor.
Methods: Twenty-nine subjects were recruited, randomly assigned to receive either a CL2 or FF3 RBB and they were treated by one operator between 1992 - 2000. After 15 years, twenty-two subjects attended for clinical review to compare outcomes. Prosthesis longevity was determined by clinical examination and history. Success was defined as absence of complications requiring intervention and survival as retention of the original prosthesis in mouth. Patient’s satisfaction and oral health-related quality of life (OHRQoL) was assessed with 14-item satisfaction questionnaire (visual analogue scale) and Oral Health Impact Profile (OHIP-49-Likert scale). Longevity and patient-reported outcomes were analyzed with log rank and t-test at significance level α=0.05.
Results: Twelve out of fifteen CL2 and ten out of fourteen FF3 bridges were examined (75.9% response rate) with a mean service life of 215.6±20.8 months. All CL2 bridges survived with no complications while 90% of FF3 experienced complication and only half of them were survived. CL2 has better success and survival rate than FF3 (P=0.000 and P=0.012, respectively). General satisfaction of CL2 group was 77.8± 19.9 and FF3 group was 77.4±20.2. OHIP-49 summary score for CL2 and FF3 group was 24.9±23.1 and 14.4±13.6 respectively. There was no significant difference in patient satisfaction and OHRQoL apart from CL2 group patients had a higher satisfaction in cleaning of the prosthesis (84.1±16.2) than FF3 group (72.6±11.7) (P=0.05).
Conclusions: Two-unit cantilevered RBBs were observed to have a significantly better success and survival than FF3 design for the replacement of a maxillary permanent incisors. Good patient-reported outcomes has been reported for RBBs in single tooth replacement in aesthetic zone.
Methods: Twenty-nine subjects were recruited, randomly assigned to receive either a CL2 or FF3 RBB and they were treated by one operator between 1992 - 2000. After 15 years, twenty-two subjects attended for clinical review to compare outcomes. Prosthesis longevity was determined by clinical examination and history. Success was defined as absence of complications requiring intervention and survival as retention of the original prosthesis in mouth. Patient’s satisfaction and oral health-related quality of life (OHRQoL) was assessed with 14-item satisfaction questionnaire (visual analogue scale) and Oral Health Impact Profile (OHIP-49-Likert scale). Longevity and patient-reported outcomes were analyzed with log rank and t-test at significance level α=0.05.
Results: Twelve out of fifteen CL2 and ten out of fourteen FF3 bridges were examined (75.9% response rate) with a mean service life of 215.6±20.8 months. All CL2 bridges survived with no complications while 90% of FF3 experienced complication and only half of them were survived. CL2 has better success and survival rate than FF3 (P=0.000 and P=0.012, respectively). General satisfaction of CL2 group was 77.8± 19.9 and FF3 group was 77.4±20.2. OHIP-49 summary score for CL2 and FF3 group was 24.9±23.1 and 14.4±13.6 respectively. There was no significant difference in patient satisfaction and OHRQoL apart from CL2 group patients had a higher satisfaction in cleaning of the prosthesis (84.1±16.2) than FF3 group (72.6±11.7) (P=0.05).
Conclusions: Two-unit cantilevered RBBs were observed to have a significantly better success and survival than FF3 design for the replacement of a maxillary permanent incisors. Good patient-reported outcomes has been reported for RBBs in single tooth replacement in aesthetic zone.