IADR Abstract Archives
Direct Class-v Restoration Survival, a Practice-Based Prospective Cohort Study
Objectives: To investigate clinical performance of resin composite Class-V restorations and involved operator, patient and restoration variables.
Methods: From digital patient files, data on Class-V restorations placed in 10 practices by 20 dentists were collected, placed between January 2015 and June 2021. The following data were retrieved. Patient level: Gender, age, SES, general health score, periodontal condition, caries risk, presence of parafunctional habits. Tooth/restoration level: Tooth type, endodontically treated (y/n), reason for restoration placement, used restorative material and adhesive. The date of placement, date of last check up-visit and when applicable, date and type of intervention. Tooth extraction, endodontic treatment and placement of a crown or a new restoration including the same surfaces as the existing restoration, were considered as failure. Kaplan Meier statistics were applied and Annual Failures Rates (AFR) were calculated. To investigate influence of variables on longevity of restorations, a multilevel Cox-Regression was conducted (p<0.05), with clustering of data for restorations within the same patient.
Results: AFRs were calculated after 5 years; overall 2.6%, 3.2% for restorations placed due to caries and 2.2% for restorations placed due to NCCL.
The Cox-regression showed a significant higher risk for failure for the Class-V restorations placed due to caries (HR=1.79; p=0.004). No significant effects were found between other patient-related-variables, operators and different composite and adhesive materials.
Conclusions: Diagnosis for Class-V composite restoration placement has a significant effect on restoration survival. Restorations placed due to caries show inferior clinical performance compared to restorations placed due NCCL. Other operator, patient and material related variables play a minor role.
Methods: From digital patient files, data on Class-V restorations placed in 10 practices by 20 dentists were collected, placed between January 2015 and June 2021. The following data were retrieved. Patient level: Gender, age, SES, general health score, periodontal condition, caries risk, presence of parafunctional habits. Tooth/restoration level: Tooth type, endodontically treated (y/n), reason for restoration placement, used restorative material and adhesive. The date of placement, date of last check up-visit and when applicable, date and type of intervention. Tooth extraction, endodontic treatment and placement of a crown or a new restoration including the same surfaces as the existing restoration, were considered as failure. Kaplan Meier statistics were applied and Annual Failures Rates (AFR) were calculated. To investigate influence of variables on longevity of restorations, a multilevel Cox-Regression was conducted (p<0.05), with clustering of data for restorations within the same patient.
Results: AFRs were calculated after 5 years; overall 2.6%, 3.2% for restorations placed due to caries and 2.2% for restorations placed due to NCCL.
The Cox-regression showed a significant higher risk for failure for the Class-V restorations placed due to caries (HR=1.79; p=0.004). No significant effects were found between other patient-related-variables, operators and different composite and adhesive materials.
Conclusions: Diagnosis for Class-V composite restoration placement has a significant effect on restoration survival. Restorations placed due to caries show inferior clinical performance compared to restorations placed due NCCL. Other operator, patient and material related variables play a minor role.