Comparison of Two Methods of Chlorhexidine Application of Shear Bond Strength Degradation between Composite Resin and Dentin

Abstract

Background: Chlorhexidine could have effect on shear bond strength of composite resin-dentin. Objective: The purpose of this study is to compare two methods of chlorhexidine application of shear bond strength degradation between composite resin and dentin. Methods: Thirty samples of dentin were taken from the crown of premolars and then divided into three groups (n = 10). Group 1 were applied bonding without chlorhexidine, group 2 were applied with liquid chlorhexidine and followed by bonding, group 3 were applied bonding which contains chlorhexidine. Each group was divided into two subgroups (n = 5): the group with and without 10% NaOCl immersion for one hour. Then, 4 samples in each subgroup were used to measure shear bond strength using Universal Testing Machine, and 1 sample was examined with Scanning Electron Microscope (SEM). Data were analyzed using SPSS 17 by Mann-Whitney and Kruskal Wallis test. Results: The highest mean shear bond strength without 10% NaOCl immersion was in group 1, while the highest mean with 10% NaOCl immersion was in group 3. Significant differences occurred between the groups 1 and 2, groups 2 and 3. Conclusion: Method of using bonding contains chlorhexidine can increase and inhibit degradation shear bond strength between composite resin and dentin.

KEBOCORAN TEPI RESIN KOMPOSIT BULK FILL SETELAH APLIKASI BAHAN DESINFEKSI KAVITAS CHLORHEXIDINE DIGLUCONATE 2% DAN ALKOHOL 70% - Study In Vitro

“…8 Penghambatan aktivitas enzim matriks metalloproteinase dapat menurunkan degradasi dentin, sehingga perlekatan ikatan resin komposit dentin menjadi kuat dan tingkat kebocoran yang dihasilkan menjadi minimal. 14 Enzim matriks metalloproteinase dapat diaktivasi oleh asam lemah seperti asam laktat Tabel 1. Hasil analisis kebocoran tepi resin komposit bulk fill pada kelompok desinfeksi kavitas chlorhexidine digluconate 2% dan alkohol 70% Gambar 1.…”