ANALYSIS OF RESTORATIONS PERFORMED BY STUDENTS TAKING DENTISTRY FOR CHILDREN

Objectives: To identify and evaluate the stability and retention of crown restorations performed by students at the Department of Pediatric Dentistry. Methods Ten teachers (Kappa 0.89) assessed the restorations recorded photographically in the 2014-2015 final student presentation and corresponding to patients returning for a recall visit between May-July 2016. Visual clinical examination was performed according to the following criteria: loss and caries, loss without caries, need replacement with caries, need replacement without caries, acceptable, showing deterioration, and in good condition; patients were examined with a spotlight and X4 magnifying glass. Clinical records were checked to establish the filling material used in each case and date of procedure. The type of restoration performed on each patient was classified according to the following categories: C (crown), PGI (photopolymerizable glass ionomer), CGI (conventional glass ionomer), TER (total-etch resin), and SCR (self-adhesive resin).  The distribution of the studied variable in each dentition was analyzed by Chi square test; Bonferroni was used to analyze all possible pairs of types of restorations.Results: Two groups were established: A: primary dentition (7.46±1.75 years): 240 restorations, follow-up time 12.95±5.21 months, range 5-25 months; and B: permanent dentition (10.06±3.03 years): 179 restorations, mean follow-up time 11.92±4.1 months, range 6-24 months. The most frequent choices in group A were PGI 37.08%, C 35% and TER 25%; the choice was TER 93.3% in B. Results showed no need for replacement  96.4% of C, 80% of TER, and 60.6% of PGC in A, and 86.2% of TER in B; no statistically significant differences in TER were observed between A and B. Highly significant differences among the different types of restoration were observed in group A (p<0.005); no significant differences were observed in B. In A, pairs C-CGI, C-PGI, C-TER, and PGI-TER were significantly different at an overall level of 0.05.Conclusions: Analysis of results allows inferring that although photopolymerizable glass ionomers are more frequently chosen for primary dentition, crowns are significantly superior to plastic restorations, and that total-etch resins show acceptable performance in primary and permanent dentitions.