Kim Jung-Ho, Kwon Oh-Won, Kim Hyung-Il, Kwon Yong Hoon
Department of Orthodontics, College of Dentistry, Kyungpook National University, Daegu, Korea.
Dent Mater J. 2005 Dec;24(4):596-602. doi: 10.4012/dmj.24.596.
The purpose of this study was to test the effectiveness of an Er:YAG laser in etching the enamel surface for orthodontic treatment. Bovine incisors were either acid-etched or laser-treated. An orthodontic bracket was attached on each treated surface using one-step dentin adhesive and self-curing resin. Tensile bond strength was then evaluated. In addition, the surface morphology of specimens treated with phosphoric acid/laser and self-etching primer, as well as the cross-section of enamel-primer-resin interfaces, were observed. One-Up Bond F-treated specimens after Er:YAG laser ablation showed statistically similar tensile bond strength (9.9 +/- 1.3 MPa) to that of phosphoric acid-etched specimens (11.8 +/- 1.7 MPa). Surface roughness and thickness of the enamel-primer-resin interfaces did not much affect the tensile bond strength of the tested specimens. In conclusion, Er:YAG laser ablation achieved clinically acceptable level of tensile bond strength when used with One-Up Bond F.
本研究的目的是测试铒钇铝石榴石（Er:YAG）激光蚀刻牙釉质表面用于正畸治疗的有效性。牛切牙分别进行酸蚀或激光处理。使用一步法牙本质粘结剂和自凝树脂在每个处理过的表面上粘结一个正畸托槽。然后评估拉伸粘结强度。此外，观察了用磷酸/激光和自酸蚀底漆处理的标本的表面形态，以及牙釉质-底漆-树脂界面的横截面。铒钇铝石榴石激光消融后用单组分粘结剂F处理的标本显示出与磷酸蚀刻标本（11.8±1.7MPa）在统计学上相似的拉伸粘结强度（9.9±1.3MPa）。牙釉质-底漆-树脂界面的表面粗糙度和厚度对测试标本的拉伸粘结强度影响不大。总之，当与单组分粘结剂F一起使用时，铒钇铝石榴石激光消融达到了临床上可接受的拉伸粘结强度水平。
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