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Removal of intracanal obstructions with ultrasound(an analysis of 206 cases)

Wang Xiaoyi; et al.(School of Stomatology , Shanghai Second MedicalUniversity , Shanghai (200011)  
AbstractThe experience of removing intracanal obstruc-tions with ultrasound in 206 cases from Sept. 1987 toJune 1993 was reported. Removal rate was 97. 08%(200/206). Six cases failed (2. 92%) , due to brokenendodontic instruments at the apical third or in thecurved and fine canals. The success rate of retrievalof casting post core or other foreign objects was100%. Our experience proves that ultrasonic tech-nique is more effective and safer than any other meth-ods for removal of intracanal obstructions.
【CateGory Index】: R781.05
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