Objective: The aim of this study was to evaluate the longitudinal retention of composite resin restorations using two adhesive systems: Clearfil SE Bond and AdperScothbondMulti-Purpose, self-etching system and conventional system respectively, applied in 39 first permanent molars affected by Molar-Incisor Hypomineralization in children between 6 and 8 years.
Method: After restorative treatment under rubber dam and according to the manufacturer's standards, the teeth were evaluated clinically using the criteria of quality analysis of restoration USPHS- Modified 1, 6 and 12 months. A descriptive analysis and survival actuarial method was used to evaluate the results.
Result: In survival analysis, the teeth restored with Clearfil SE Bond, were intact in 100%, 89% and 79% in periods 1, 6 and 12 months respectively and teeth restored with AdperScothbondMulti-Purpose system remained intact in 95%, 70% and 60% for periods of 1, 6 and 12 months respectively.
Conclusion: Although preliminary, the results suggest a greater adhesion of the structure affected by Molar-Incisor Hypomineralization with composite resin, through the use of self-etching adhesive Clearfil SE Bond.