Restoration in primary molars placed by undergraduate dental students: reasons for failures

Dental caries is one of the most common chronic childhood diseases and highly prevalent in world. The commonest treatment procedure for dental a restoration which aims to retain tooth. survival depends on factors associated with restorative materials, patients or operators. Thus, this study aimed determine reasons failure posterior primary teeth performed by undergraduate students. A total number 32 aged from 5 12 years old were included study. Overall, 115 molar restorations assessed clinically using modified United States Public Health Service Ryge criteria. O’Leary plaque score was used evaluate oral hygiene status all patients. Then, data analysed Kaplan-Meier curves log-rank test Cox regression analysis. 43 (37.4 %) failed 62.1 % glass ionomer cement 36.4 composite restorations. Marginal adaptation (62.8 cause failure. 76.7% poor hygiene, it showed significant difference compared moderate good (p = 0.014). concluded that type material contributed placed may occur 2.6 times more