Marginal Sealing Durability of Two Contemporary Self-Etch Adhesives

Abstract EN

Introduction.

Sealing abilities of two self-etch adhesives were evaluated after two aging processes: storage in water and thermocycling.

Materials and Methods.

Cl V cavities were prepared on the buccal and lingual aspects of 48 human premolars, with cervical margins 1 mm below the CEJ.

Clearfil Protect Bond (CPB) and BeautiBond (BB) (two-step and one-step self-etch adhesives, resp.) were applied, each to half of the cavities and restored with composite resin.

Each group was randomly subdivided into 4 subgroups (n=12) and evaluated for dye penetration after 24 hours, after 3000 thermocycling rounds, after a 6-month water storage, and after 3000 thermocycling rounds plus 6-month water storage, respectively.

Data was analyzed using SPSS 11.5 and Kruskal-Wallis and Mann-Whitney U tests (α=0.05).

Results.

There were no significant differences in enamel and dentin microleakage between the adhesives (P=0.683; P=0.154).

Furthermore, no significant differences were observed in enamel microleakage of each one of CPB and BB (P=0.061 and P=0.318, resp.).

However, significant decrease was observed in subgroups 3 and 4 (P=0.001) for CPB dentinal margins.

Conclusion.

In this study, limited aging procedures had no influence on marginal integrity of composite resin restorations bonded with self-etch adhesives of CPB and BB.

Furthermore, CPB dentinal sealing improved after aging.