The Effect of Chemomechanical Caries Removal and Different Bonding Systems on Shear Bond Strength of Carious Dentin (In Vitro Study)

Abstract

The purpose of this in vitro study was to determine whether shear bond strength(SBS) to chemomechanically excavated dentine by Carisolv (CS) differed from theSBS after conventional caries removal by bur (CB), with the use of the followingadhesive systems: [Total-etch (TE), etch and Compobond1, etch, prime and bondingresin]; [Self-etch (SE), Xeno v, one component self-etching dental adhesive] and [Noetch(NE), Compobond1, prime& bond only]. Fifty human molars with occlusal carieswere used to prepare dentin samples which were assigned to 5 groups: group I and IIIthe prepared samples treated by CB and CS respectively then with TE, group II andIV the prepared samples treated by CB and CS respectively then with SE, while ingroup V the prepared samples treated by CS and then with NE. For each sample therewas light cured composite core build up. After water storage, the samples were testedin a single-plane shear test assembly. The results demonstrated that there werestatistical significant differences with in the mode of caries removal groups and alsothere were statistical significant differences between the bonding systems which affectSBS of carious dentin at p < 0.01, with in favor of the TE over SE. The present datademonstrate that with the use of CS on (carious dentin, there was either increase ordecrease in bond strength in relation with different bonding systems.

Evaluation of dentin features in teeth after caries removal by three techniques (chemomechanical, mechanical with a smart bur, and air-abrasion): an in vitro study

“…The smear layer is demineralized to some extent by the weak acidic monomer, which is then integrated into the hybrid layer. As a result, the effectiveness of self-etching adhesive bonding is highly dependent on smear layer properties ( Saikaew et al, 2022 ; Mohammed & Salih, 2011 ). In our result, in all groups with both magnifications (4,000x, 8,000x), only about 15–30% without smear layer (score 0) and for a dense layer of smear layer with visible tubules (score 2), 45–55% with a moderate layer of smear layer whereas the about 15–30% (score 1), and 0–5% for score three the dense smear layer without visible tubules.…”

Optimizing Adhesive Bonding to Caries Affected Dentin: A Comprehensive Systematic Review and Meta-Analysis of Dental Adhesive Strategies following Chemo-Mechanical Caries Removal

“…The enzymes in Carisolv, such as collagenase and papain, break down the denatured collagen fibrils present in carious dentin, facilitating its removal [52]. This enzymatic action is believed to be less aggressive towards sound dentin compared to mechanical methods, as it selectively targets the demineralized and degraded collagen structure [53][54][55]. The CMCR method did not have any adverse effects on the bonding of adhesives to CAD [6,9,16,30,[32][33][34]36,37].…”