IADR Abstract Archives
Evaluation of Non-carious Cervical Lesion Restorations on Different Operator Experience and Adhesives: A Retrospective Clinical Study
Objectives: to evaluate the clinical success rate of non-carious cervical lesion (NCCL) restorations on different operator experience and adhesive systems.
Methods: Patients were routinely treated by an undergraduate or postgraduate student and randomly received a recall evaluation. Two experience examiners were calibrated for evaluating NCCL using the modified USPHS criteria, which including the key parameters of retention, marginal discoloration, marginal integrity, and caries. The factors related to the survival of restoration were including; gender, age, arch site, tooth position, tooth types, occlusion, wear facet, caries risk, operator, adhesive, and composite. The key parameters data were analyzed using the Kaplan-Meier test. The comparison between key parameters and factors were performed using the Pearson Chi-square or Fisher’s Exact test.
Results: A total of 460 cervical restorations from 96 patients were evaluated with a mean age of 60.9 years (ranged from 37 to 83). The overall retention success was more than 90 % over 60 months in all adhesive systems. After 60 months, the success rate was dropped for both the 2-step etch and rinse and 2-step self-etching adhesive, while the selective enamel etching technique remained at the high success rate. The main reason failures were marginal integrity and marginal discoloration. The retention failure was related to the wear facets (p =0.03) and adhesive (p =0.02). The marginal failure on discoloration and marginal integrity were under the influenced of operator and adhesive.
Conclusions: Recently adhesives and composites are well accepted for long term restoration. The short term clinical success rate of NCCL was not depended on operator and adhesive, even though the operator experience and adhesive influenced to the high success rate in the long term clinical success.
Methods: Patients were routinely treated by an undergraduate or postgraduate student and randomly received a recall evaluation. Two experience examiners were calibrated for evaluating NCCL using the modified USPHS criteria, which including the key parameters of retention, marginal discoloration, marginal integrity, and caries. The factors related to the survival of restoration were including; gender, age, arch site, tooth position, tooth types, occlusion, wear facet, caries risk, operator, adhesive, and composite. The key parameters data were analyzed using the Kaplan-Meier test. The comparison between key parameters and factors were performed using the Pearson Chi-square or Fisher’s Exact test.
Results: A total of 460 cervical restorations from 96 patients were evaluated with a mean age of 60.9 years (ranged from 37 to 83). The overall retention success was more than 90 % over 60 months in all adhesive systems. After 60 months, the success rate was dropped for both the 2-step etch and rinse and 2-step self-etching adhesive, while the selective enamel etching technique remained at the high success rate. The main reason failures were marginal integrity and marginal discoloration. The retention failure was related to the wear facets (p =0.03) and adhesive (p =0.02). The marginal failure on discoloration and marginal integrity were under the influenced of operator and adhesive.
Conclusions: Recently adhesives and composites are well accepted for long term restoration. The short term clinical success rate of NCCL was not depended on operator and adhesive, even though the operator experience and adhesive influenced to the high success rate in the long term clinical success.