**Effect of the Er, Cr: YSGG Laser Parameters on Shear Bond Strength and Microstructure on Human Dentin Surface**

Eun Mi Rhim1, Sungyoon Huh2, Duck Su Kim3, Sun-Young Kim4, Su-Jin Ahn5, Kyung Lhi Kang6 and Sang Hyuk Park4,7 *1The Catholic University of Korea, St. Paul's Hospital, Dept. of Conservative Dentistry, Seoul, 2Shingu University, Dept. of Dental Hygiene, Seongnam, 3Kyung Hee University, Dental Hospital, Dept. of Conservative Dentistry, Seoul 4Kyung Hee University, Dept. of Conservative Dentistry, Seoul, 5Kyung Hee University, Dental Hospital at Gandong, Dept. of Biomaterials & Prosthodontics, 6Kyung Hee University, Dental Hospital at Gandong, Dept. of Periodontology, 7Kyung Hee University Dental Hospital at Gandong, Dept. of Conservative Dentistry Korea* 
