title: Microleakage study of different adhesive systems in Class V cavities prepared by Er,Cr:YSGG laser and bur preparation.
abstract: This study sought to compare the microleakage of composite resin restorations using two different dentin adhesive systems and two different modes of cavity preparation: a high-speed handpiece and an Er,Cr:YSGG laser. Twenty-five caries-free permanent human premolars were assigned randomly into five groups of five. A high-speed handpiece was used to prepare Class V cavities on the buccal and lingual surfaces of 10 randomly selected teeth. Class V cavities were cut on the buccal and lingual surfaces of the remaining 15 teeth using the Er,Cr:YSGG laser system. Fifty cavities were prepared with enamel and dentin margins 1.0 mm below the cemento-enamel junction and assigned into five groups: I, II, and III by the Er,Cr:YSGG laser and IV and V by the high-speed handpiece. In all groups, the differences between gingival and occlusal leakage scores were statistically significant (p < 0.05). The occlusal and gingival scores of groups I and IV demonstrated statistically significant differences (p < 0.05). The lased group with additional acid etching revealed less microleakage than groups III and IV (p < 0.05). Both self-etch and total-etch adhesive systems demonstrated acceptable microleakage scores when used on Er,Cr:YSGG laser-prepared cavities; however, additional acid etching after Er,Cr:YSGG laser preparation is recommended.
authors.affiliation: Ege University School of Dentistry, Department of Restorative Dentistry, Izmir, Turkey.
authors.forename: Zeynep
authors.initials: Z
authors.lastname: Ergucu
authors.forename: Esra Uzer
authors.initials: EU
authors.lastname: Celik
authors.forename: Murat
authors.initials: M
authors.lastname: Turkun
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D001641:Bicuspid; D002857:Chromium; D003188:Composite Resins; D003737:Dental Cavity Preparation / Q000295:instrumentation* / Q000379:methods; D003755:Dental High-Speed Technique; D003762:Dental Instruments; D003763:Dental Leakage / Q000209:etiology*; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000009:adverse effects / Q000379:methods; D003806:Dentin Permeability; D017220:Dentin-Bonding Agents; D004871:Erbium; D006801:Humans; D007834:Lasers; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements; D018709:Statistics, Nonparametric
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D019279:Resin Cements; D002857:Chromium; D004871:Erbium