Clinical Performance of a Two-step Self-etch Adhesive with Additional Enamel Etching in Class III Cavities

Abstract

Objective: This study evaluated the effect of additional enamel etching on the clinical performance of Class III composite restorations bonded with a mild two-step self-etch adhesive system in a three-year evaluation of clinical service.Methods: Using a paired-tooth study design, 38 patients received at least one pair of restorations. In each paired cavity, a mild two-step selfetch adhesive (Clearfil SE Bond) was used, either with (C-SE etch) or without additional enamel etching, using phosphoric acid (C-SE non-etch). Clearfil AP-X was used as the restorative material for all restorations. Evaluation of the restorations was performed at baseline and after six months, one year, two years and three years of clinical service in terms of retention, marginal discoloration, marginal adaptation, postoperative sensitivity and secondary caries using the modified Ryge criteria.Results: A retention rate of 100% both for the C-SE non-etch and C-SE etch groups was noted. Significant differences were observed between the groups regarding the marginal discoloration

Clinical Evaluation of a Low-shrinkage Composite in Posterior Restorations: One-Year Results

“…Adper Scotchbond SE is a strong self-etch system (pH=1). 30 Although marginal discoloration has been associated with a poor etching ability of self-etch adhesives at the enamel margins, 21,23,28 significant marginal staining and color changes have been reported for self-etch adhesives with a pH similar to that of Adper Scotchbond SE. 28 Adper Scotchbond SE is a two- Figure 1.…”

“…The only system including an etch-and-rinse adhesive obtained the best clinical outcome, which is consistent with the results of previous clinical research. 21,28 Moreover, in a literature review 33 focused on marginal integrity, significantly better in vitro and in vivo enamel marginal adaptation were found with etch-and rinse adhesives compared to self-etch systems.…”

“…''Strong'' self-etch adhesives result in a more stable and satisfactory enamel bond than do ''mild'' self-etch adhesives, especially on ground, aprismatic enamel. [18][19][20] In fact, selective etching of enamel margins with phosphoric acid has been recommended [21][22][23] in clinical situations prior to applying ''mild'' self-etch adhesives.…”

Two-year Clinical Performance of Self-etching Adhesive Systems in Composite Restorations of Anterior Teeth

“…[11][12][13] Some clinical studies have showed good clinical performance of two-step self-etching systems. [14][15][16][17][18] Recently, one-step self-etching adhesive systems (1-SEAs) were introduced as the seventh generation of etching systems, which combine acid conditioning, primer, and adhesive in one bottle. Some in vitro studies showed that these systems demonstrated a similar impregnation in dentin compared with two-step self-etching systems 19 or total-etch systems, 20 although these experiments were conducted in vitro.…”

A randomized five-year clinical study of a two-step self-etch adhesive with or without selective enamel etching

“…Therefore, clinical trials conducted on NCCLs remain the best method of evaluating the outcome of an adhesive or technique as such trials provide direct evidence about effectiveness 8) . As concerns have been expressed regarding the in vitro bonding effectiveness and durability of self-etch adhesives to unetched [9][10][11] and unground enamel 9,12) , and the pre-etching of enamel has been shown to enhance the bond strengths of self-etch adhesives to values that are comparable to those produced by etch-and-rinse adhesives 10,11,13) , some clinical trials have focused on the benefits of selective enamel etching of the cavity margins prior to the application of the self-etch adhesives 3,[14][15][16] . After two-years of observation, cervical restorations bonded with a one-step self-etch adhesive resulted in less enamel marginal discoloration when the enamel margins were selectively etched 14) .…”