title: A study of cavity preparation by Er:YAG laser. Effects on the marginal leakage of composite resin restoration.
abstract: The purpose of this study was to evaluate marginal leakage of composite resin restoration from cavities prepared by Er:YAG laser. The observation of the dentin surface after the application of laser irradiation was performed by LSM, the cutting surface showed a rough surface similar to scales, and exposed dentinal tubules were observed without striations or a smeared layer formation that were observed when using a rotary cutting device. Leakage tests revealed no significant differences in the marginal seal for both enamel and dentin between cavities prepared by Er:YAG laser irradiation and when using an air-turbine. In this study, the usefulness of cavity preparation by Er:YAG laser irradiation in composite resin restoration was suggested.
authors.affiliation: Division of Cariology, Department of Oral Health Science, Course for Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences, 5274 Gakkocho-dori 2-bancho Niigata 951-8514, Japan.
authors.forename: Yoshimi
authors.initials: Y
authors.lastname: Shigetani
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Tate
authors.forename: Akira
authors.initials: A
authors.lastname: Okamoto
authors.forename: Masaaki
authors.initials: M
authors.lastname: Iwaku
authors.forename: Neamat
authors.initials: N
authors.lastname: Abu-Bakr
mesh_terms: D000538:Aluminum Silicates; D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003737:Dental Cavity Preparation / Q000295:instrumentation / Q000379:methods*; D003743:Dental Enamel / Q000648:ultrastructure; D003754:Dental High-Speed Equipment; D003763:Dental Leakage / Q000145:classification*; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000737:chemistry; D004871:Erbium; D006801:Humans; D007834:Lasers; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements / Q000737:chemistry; D012822:Silicon Dioxide; D016369:Smear Layer; D013223:Statistics as Topic; D013314:Stress, Mechanical; D013499:Surface Properties; D015019:Yttrium; D015040:Zirconium
chemical_list: D000538:Aluminum Silicates; C112828:Clearfil AP-X; D004396:Coloring Agents; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C095452:Megabond; D008689:Methacrylates; D019279:Resin Cements; C083568:Z100 composite resin; C115612:single bond; D017438:Bisphenol A-Glycidyl Methacrylate; D015019:Yttrium; D012822:Silicon Dioxide; D004871:Erbium; D015040:Zirconium