Clinical evaluation of the effects of Er:YAG laser in the treatment of cervical wedge -shaped defects
YANG Wen-dong
WANG Xin
MA Lin
LI Qian
LI Zhen
ZHANG Jie
GUO Chun-lan
WU Xuan
CAI Wen
ZHAO Ji-zhi
Abstract：AIM:To compare the effects of traditional rotary instrument and Er:YAG laser in the treatment of cervical wedge -shaped defects.METHODS:1 04 teeh of 26 patients with similar degree of cervical wedge -shaped lesions symmetrically in the same jaw were included.The teeth on one side were randomly selected for cavity preparation by Er:YAG laser as experiment group.Those in other side prepared by traditional rotary bur as the con-trol.Cavities were filled with 3Mcomposite resin by self etching adhesive technique.The patients were investigated by a questionnaire about pain,smell,noise,fear and preferred method for next cavity preparation.All restorations were followed up for 1 year after treatment by USPHS criteria.RESULTS:24 patients with 98 teeth finished the follow up. The questionnaire survey showed that 22 /26 patients(85%)preferred Er:YAG laser because there was less pain and more comfort in the treatment.1 year follow -up showed that the success rates of experimental group and control group were 86% and 88% respectively(P >0.05).CONCLUSION:Er:YAG laser is an effective and more comfortable alternative method to conventional mechanical cavity preparation.
Keywords：Er:YAG lasercavity preparationwedge -shaped defect
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 42-44 )