Influence of Adhesive Application Time on Enamel Bond Strength of Single-step Self-etch Adhesive Systems

Abstract

SUMMARYThis study examined the relationship between the adhesive application time and enamel bond strength of several single-step self-etch adhesive systems. The adhesives used were: Bond Force (BF, Tokuyama Dental Corporation, Tokyo, Japan), Clearfil tri-S Bond (CT, Kuraray Medical Inc, Tokyo, Japan), iBond Self-Etch (IB, Heraeus Kulzer, Armonk, NY) and OptiBond All-in-One (OB, sds Kerr). Bovine mandibular incisors were mounted in self-curing resin and wet ground with #600-grit silicon carbide paper to expose labial enamel. Adhesives were applied for 10, 20 or 40 seconds and the resin composites were condensed into a mold (ø4 x 2 mm) on the enamel and light irradiated. Ten samples per test group were stored in 37°C water for 24 hours, then shear tested at a crosshead speed of 1.0 mm/minute. One-way ANOVA and the Tukey HSD test (α α=0.05) were performed within each adhe-

Shear bond strength of one‐step self‐etch adhesives to enamel: effect of acid pretreatment

“…Bovine teeth also have large, flat surfaces and are unlikely to have undergone prior caries challenges that could affect the test result. The mineral distribution within the carious lesions in bovine teeth is reportedly similar to that found in human teeth, and the structural changes that occur in human and bovine teeth are also similar .…”

Bond Strengths of One-Step Self-Etch Adhesives to Laser-Irradiated and Bur-Cut Dentin After Water Storage and Thermocycling

“…[6][7][8] A precursor of these adhesives is a selfetching primer composed of aqueous mixtures of acidic functional monomers, generally phosphoric acid esters or carboxylates, such as 10-methacryloyloxydecyl dihyrogen phosphate (MDP), 4-methacryloxyethyl trimellitic acid (4-MET), and 2-methacryloxyethyl phenyl hydrogen phosphate (phenyl-P). 9,10 In hydrophilic monomers, carboxylic and phosphate groups act as proton donors in the partial demineralization of the smear layer and have the potential to bond ionically with the calcium from residual hydroxyapatite. 7 The current trend in minimally invasive dentistry involves alternative techniques for dental cavity preparation, such as laser irradiation [11][12][13][14][15][16][17] and aluminum oxide air abrasive.…”

Comparative Evaluation of Self-etching Primers and Phosphoric Acid Effectiveness on Composite to Enamel Bond: An in vitro Study

“…Because demineralization and resin infiltration occur simultaneously when using self-etch adhesives, dissolved hydroxyapatite crystals and smear layer remnants get incorporated into the polymerized resin layer. 6,8,11 Mild self-etch Adper SE Plus showed the highest bond strength values, while the acidic Adper Easy One showed the lowest values. This finding is consistent with previous literature which states that mild two-step self-etching primers usually performs better than acidic one step self-etching primers.…”

“…These systems are generally referred to as self-etch adhesives. 6 The self-etching materials were introduced to dentistry at a time when less technique-sensitive adhesive materials were desired, although these qualities can be very appealing to the clinicians. It needs to be evaluated, as to how these new materials interact with the enamel surface, since the current self-etching materials have higher PH values.…”