口腔手术显微镜联合超声技术在根管再治疗中的应用效果

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Abstract Objective To explore the use of dental operating microscope with ultrasonic technique in root canal retreatment,provide a basis for the privention and retreatment of failure of root canal therapy.Methods 98 teeth (142 canals) with initial treatment failure from department of stamtology of Characteristic Medical Center of PAP were chosen from July 2017 to December 2020. And reasons for initial treatment failure were recorded .These canals were treated with ultrasonic technique under dental operating microscope. The success rates were calculated after 6 months.Results 78 teeth were successfully managed with a success rate of 79.6%.The success rates of each category of teeth with initial treatment failure were:92.9%(13/14) for missing root canals;65.4%(17/26)for calcified root canals;75.0%(12/16)for canals blocked by instrument fragments;85.0%(17/20)for canals with perforation.100%(10/10)for canals with open canal system;75.0%(9/12)for ledged canals.Conclusions The use of dental operating microscope with ultrasonic technique is proved effective in root canal retreatment.

Key words： dental operating microscope ultrasonic technique root canal retreatment instrument fragments perforation

Received: 19 February 2021

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	Articles by authors
	LAN Xuesong
	QI Lulu
	LIANG Huiling
	WANG Xiaobo

Cite this article:

LAN Xuesong,QI Lulu,LIANG Huiling等. Efficacy of dental operating microscope and ultrasonic instrucments in root canal retreatment[J]. Med. J. Chin. Peop. Armed Poli. Forc., 2021, 32(6): 500-503.

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http://journal08.magtechjournal.com/Jwk_wjyx/EN/ OR http://journal08.magtechjournal.com/Jwk_wjyx/EN/Y2021/V32/I6/500

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