Assessment of microleakage and interfacial adaptation following simultaneous activation technique in primary molars

Abstract

Background

Simultaneous Activation Technique is a newer method of co-curing resin modified glass ionomer (RMGI) and self-etch adhesive.

Aim

Assessment of microleakage and interfacial adaptation following simultaneous activation technique in primary molars.

Design

Standardized Class I cavities were prepared in 66 non-carious primary molars and randomly allocated to Group I – Simultaneous activation of RMGI and self-etch adhesive (SAT); Group II – SAT with enamel etching (SAT + EE); Group III – Conventional Sandwich Technique (ST) and restored with bulk fill composite. Time taken was calculated using stopwatch. Microleakage was assessed using dye penetration method under stereomicroscope. Seven samples per group were sent for Scanning Electron Microscopy (SEM) analysis. One-Way Analysis of Variance and Post- Hoc Tukey's test were applied at P < 0.05.

Results

Mean microleakage of group I, II and III were 1.23, 1.41 and 1.59 respectively. Time taken was least for SAT followed by SAT + EE and ST group. Statistically significant difference was seen between SAT and ST group (p < 0.0001) and SAT + EE and ST group (p < 0.0001). SEM analysis showed better mean interfacial adaptation in SAT + EE (1.00) followed by ST (2.14) and SAT (3.57) group. Difference between SAT + EE and SAT group was significant (p = 0.005).

Conclusion

Simultaneous activation technique with selective enamel etching resulted in less microleakage and better interfacial adaptation.