Ten-Year Survival of Class II Restorations Placed by General Practitioners. (October 2016)

• Record Type: Journal Article
• Authors: Laske, M.; Opdam, N.J.M.; Bronkhorst, E.M.; Braspenning, J.C.C.; Huysmans, M.C.D.N.J.M.
• Is Part Of: JDR clinical and translational research. Volume 1:Number 3(2016)
• Page Start: 292
• Page End: 299
• Publication Date: 2016-10
• Subjects: longevity -- composite resins -- dental amalgam -- clinical trials -- risk factors -- retrospective study; Dentistry -- Periodicals; Dental technology -- Periodicals; Oral medicine -- Periodicals; Dentistry; Dental technology; Oral medicine; Periodicals; 617.6005
• DOI: 10.1177/2380084416663192
• Languages: English
• ISSNs: 2380-0844

Abstract

The aim of this retrospective practice-based study was to investigate the survival of direct class II restorations placed by a group of general dental practitioners (GDPs) and to analyze the effect of practice-, patient-, and tooth/restoration-related factors. Electronic patient files of 24 general dental practices were used for collecting the data for this study. From the patient files, survival rates of 222, 836 composites, amalgams, glass ionomers, and compomers placed in 61, 121 patients by 67 GDPs between 1999 and 2011 were analyzed by Kaplan-Meier statistics and a multiple Cox regression. The investigated group of GDPs placed restorations with a satisfactory survival (mean AFR10, 4.9%; 95% confidence interval, 2.1 to 7.7), although a wide variation in annual failure rate (AFR) existed between the different operators, varying between 2.6% and 7.0%. Restorations placed in young adults (21–30 y old) survived longest, whereas they showed a shorter survival in children (hazard ratio [HR], 1.553) and the elderly (HR, 1.593). Restorations in molar teeth, restorations placed in endodontically treated teeth, and multisurface restorations are more at risk for reintervention. However, restoration size (included surfaces) has a greater impact on restoration survival in premolar teeth. For the future, improved data collection at the practice/operator, patient, and tooth/restoration level (e.g., risk assessment and diagnoses) will provide the opportunity to evaluate even more extensively the risk factors involved. Knowledge Transfer Statement: The results of this study give insight into the long-term survival of direct dental restorations and the influencing practice-, patient-, and tooth/restoration-related variables.