Comparison of the micro-tensile bond strengths of four different universal adhesives to caries-affected dentin after ER:YAG laser irradiation

• Published in: Dental Materials Journal Vol. 38; no. 2; pp. 218 - 225
• Main Authors: DÖNMEZ, Nazmiye, GÜNGÖR, Ayça Sarıalioğlu, KARABULUT, Barış, SİSO, Şeyda Hergüner
• Format: Journal Article
• Language: English; Japanese
• Published: Japan The Japanese Society for Dental Materials and Devices 28.03.2019; Japanese Society for Dental Materials and Devices; Japan Science and Technology Agency
• Subjects: Adhesive strength; Adhesives; Bond strength; Bonding agents; Bonding strength; Caries-affected dentin; Composite materials; Dental caries; Dentin; Dentistry; Er:YAG laser; Irradiation; Lasers; Lesions; Microtensile bond strength; Molars; Polymer matrix composites; Resins; Scanning electron microscopy; Semiconductor lasers; Statistical analysis; Subgroups; Teeth; Universal adhesive; YAG lasers; Universal adhesive; Er:YAG laser; Caries-affected dentin; Microtensile bond strength
• ISSN: 0287-4547; 1881-1361
• DOI: 10.4012/dmj.2017-428

The micro-tensile bond strengths (micro-TBSs) of four universal adhesive systems, applied in two different bonding techniques, to carries-affected dentin after Er:YAG laser irradiation were investigated. Twenty-four extracted human molars were divided into four groups, according to the adhesive systems used. Each group was subdivided into two subgroups, depending on the bonding method used: the etch-and-rinse procedure or self-etch procedure. The carious lesions were irradiated using an Er:YAG laser. Resin composites were used to restore the adhesive-treated dentin surfaces. After 2,500 thermal cycles, the vertical composite resin-dentin sticks obtained were subjected to micro-TBS tests. One tooth in each group was examined using scanning electron microscopy (SEM). There were statistically significant differences (p<0.001) in micro-TBS values between universal adhesives. The results of this study suggested that universal adhesives applied both with self and total etch technique can be used for adhesive restorations to caries-affected dentin after Er:YAG laser irradiation. If lasers are preferred as a caries removal method, choosing a dentin bonding agent containing MDP may be recommended in clinical practice due to the property of increasing the bonding strength.