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《Chinese Journal of Prosthodontics》 2011-02
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Restopective analysis of dental operating microscope in root canal retreatment

WANG Guang-yao,HE Shuai,DING Yi,WANGN Wen-lian,HUANG Yun-xing,LU Dan.(Department of Stomatology,No 118 Hospital of PLA,Zhejiang 325000,China)  
Objective: To evaluate the clinical effect of dental microscope technique and supersonic instruments on teeth with defect by pulpitis or periapical disease which could not be treated by traditional methods.Methods: 420 teeth with defect by pulpitis or periapical diseasa were treated success rate were caculated respectively.with dental operating microscope and supersonic instruments.Results: The success rate of retreatment was 63.33%,while 154 cases were failed(36.67%).31 cases(20.13%) failed while patients refused to accept restorations after treatment,91cases(59.09%) failed due to totally blocked root canals with calcification,18 cases gave up because of severe periodontitis,while 14cases faild with perforation at canal bottom or side wall.Conclusions: Dental microscope technique might be an effective way for root canal retreatment for teeth with severve pulpitis or periapical disease which could not be treated by traditional methods.
【Fund】: 温州市科技局科技计划(项目编号:Y2003A093 Y20060076);; 温州市鹿城区科技局社会科技计划(项目编号:S070107)
【CateGory Index】: R783
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