层递法探查疏通中青年患者下颌磨牙近中中央根管的初步研究

doi:10.13701/j.cnki.kqyxyj.2017.08.020

口腔医学研究 ›› 2017, Vol. 33 ›› Issue (8): 881-884.DOI: 10.13701/j.cnki.kqyxyj.2017.08.020

层递法探查疏通中青年患者下颌磨牙近中中央根管的初步研究

杨丽丽, 张岩^*, 赵世俊, 王家奎

沧州市人民医院口腔科河北沧州 061000

收稿日期:2017-02-11 出版日期:2017-08-20 发布日期:2017-08-28
通讯作者: 张岩,电话:13463726322
作者简介:杨丽丽(1981~ ),女,河北人,主治医师,硕士,主要从事牙体牙髓专业临床及基础的研究工作。
基金资助:
沧州市科技支撑计划项目(编号:151302106)

Application of Progressive Method to Locate and Negotiate Middle Mesial Canal of Mandibular Molars in Young and Middle-aged Patients: An in Vivo Study.

YANG Li-li^*, ZHANG Yan, ZHAO Shi-jun, WANG Jia-kui.

Department of Stomatology, Cangzhou People'
s Hospital, Cangzhou 061000, China.

Received:2017-02-11 Online:2017-08-20 Published:2017-08-28

摘要/Abstract

摘要： 目的:评估层递法探查中青年患者下颌磨牙近中中央根管的应用价值。方法:采集20~45岁患者60人,下颌第一磨牙45颗,下颌第二磨牙25颗。应用层递法对根管系统进行探查,记录探查结果,应用卡方检验统计分析。采用分角度X线投照描计下颌磨牙MM根管的走行特点。结果:肉眼探查确定MM根管 3个(4.3%),显微镜下确定7个(10.0%),显微超声技术辅助下确定15个(21.4%),CBCT结合显微超声技术辅助下确定17个(24.3%),第四阶段与前两个阶段间存在显著统计学差异(P<0.05),但与第三阶段探查分析无统计学差异。在确定的17个MM根管中,显示“独立”根尖孔的2个; “歧状”解剖8个;“融合”解剖7个。结论:层递法应用于中青年下颌磨牙MM根管的探查,可以有效提高下颌磨牙MM根管的探查成功率。

关键词: 层递法, CBCT, 下颌磨牙, 近中中央根管, 显微超声技术

Abstract: Objective: To evaluate the application value of progressive method for the detection and negotiation of middle mesial (MM) canals of mandibular molars in young and middle-aged patients. Methods: Forty-five mandibular first molars and twenty-five mandibular second molars from 60 patients of 20 to 45 years old were selected. The clinician detected the middle mesial canal in mandibular molars using progressive method. The number of MM canals was recorded and analyzed statistically by chi-square test. The path way of canals was characterized by periapical angulated projection. Results: The detection with naked eye revealed that the presence of MM was three (4.3%), DOM was seven (10.0%), micro-ultrasound technique was fifteen (21.4%) and cone-beam CT combined with micro-ultrasound technique was 17 (24.3%). The statistical analysis showed that there were significant differences between stage four and the first and second stage (P<0.05). There were no significant differences between stage four and the third stage. Among the 17 MM canals, seven showed ''confluent'' anatomy, two showed ''independent'' anatomy, and eight showed ''fin'' anatomy. Conclusion: The four steps progressive method will enhance the ability of dental clinician to locate MM canals in mandibular molars in young and middle-aged patients.

Key words: Progressive method, CBCT , Mandibular molar , Middle mesial canal, Microscopic ultrasound technology

中图分类号:

R781.1

杨丽丽, 张岩, 赵世俊, 王家奎. 层递法探查疏通中青年患者下颌磨牙近中中央根管的初步研究[J]. 口腔医学研究, 2017, 33(8): 881-884.

YANG Li-li, ZHANG Yan, ZHAO Shi-jun, WANG Jia-kui.. Application of Progressive Method to Locate and Negotiate Middle Mesial Canal of Mandibular Molars in Young and Middle-aged Patients: An in Vivo Study.[J]. Journal of Oral Science Research, 2017, 33(8): 881-884.

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层递法探查疏通中青年患者下颌磨牙近中中央根管的初步研究

Application of Progressive Method to Locate and Negotiate Middle Mesial Canal of Mandibular Molars in Young and Middle-aged Patients: An in Vivo Study.

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