Comportamento clínico de restaurações de resina composta em dentes decíduos: estudo retrospectivo

Abstract

The aim of this clinical retrospective study was to evaluate the survival and risk factors associated with failures of composite resin restorations placed in anterior and posterior primary teeth. A total of 212 restorations in primary teeth from records of 76 high caries risk children (36 girls and 40 boys) attended by undergraduate students in the Pediatric Dentistry Clinic at the Federal University of Santa Maria were included in the study. The restorations’ longevity up to 6-year of follow-up was assessed using the KaplanMeier survival test. Multivariate Cox regression analysis with shared frailty was used to evaluate the clinical and individual variables associated with failures (p<0.05). Mean survival time was 4.3-year (95%CI: 4.0-4.6). The survival of the restorations reached 35.3% up to 6-year of evaluation, with an overall annual failure rate of the 18.8%. Restorations performed in teeth with pulp treatment had a risk of failure 2.16 times more than restorations placed in vital teeth (95%CI: 1.02-4.58, p=0.04). Patients who didn't use fluoridated toothpaste had 6.12 times more risk of failure in their restorations (95%CI: 1.47-25.49, p=0.01). Composite resin restorations placed in high caries risk children presented limited survival after 6-year of follow-up. The fluoridated toothpaste use was a protection factor while pulp treatment was a risk factor for restoration failure.