Shear bond strength of adhesive to KrF excimer laser treated enamel. (26th April 2010)

• Record Type: Journal Article
• Authors: Sivakumar, M.; Oliveira, Vitor; Vilar, Rui; Oliveira, Sofia S.A.
• Is Part Of: International journal of abrasive technology. Volume 3:Number 2(2010)
• Page Start: 133
• Page End: 140
• Publication Date: 2010-04-26
• Subjects: lasers -- dentistry -- laser treated enamel -- restorative composite resins -- shear bond strength -- adhesive strength -- adhesives -- acid etching -- adhesive bonding -- teeth; Grinding and polishing -- Periodicals; Abrasives -- Periodicals; 620.44
• Languages: English
• ISSNs: 1752-2641

Abstract

The bond strength of resin composite bonded to enamel surfaces treated with KrF excimer laser radiation, acid-etched surfaces and laser treated surfaces subjected to acid-etching was studied using a single plane shear method. Enamel specimens were prepared from freshly extracted healthy incisors. The specimens were subjected to laser treatment with a KrF excimer laser (248 nm) using a fluence of 4 J/cm². The bond strength to acid-etched specimens was greater than laser treated specimens. In contrast, bond strength to laser treated specimens subjected to acid-etching was comparable to those obtained with acid-etched specimens. The analogous bond strength to these specimens as compared to acid etched specimens was probably due to a shift from adhesive to mixed rupture mechanism.