北京航天总医院口腔科,北京 100076
GAO Ying, E-mail:1049338010@qq.com
收稿:2022-01-25,
纸质出版:2022-09-20
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高莹.应用CBCT对北京市600颗下颌第一磨牙近中中央根管的发生率及其相关因素的研究[J].中山大学学报(医学科学版),2022,43(05):781-787.
GAO Ying.Incidence of Middle Mesial Canals in Mandibular First Molars and Its Relevant Factors through CBCT of 600 MFMs in Beijing[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(05):781-787.
高莹.应用CBCT对北京市600颗下颌第一磨牙近中中央根管的发生率及其相关因素的研究[J].中山大学学报(医学科学版),2022,43(05):781-787. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0512.
GAO Ying.Incidence of Middle Mesial Canals in Mandibular First Molars and Its Relevant Factors through CBCT of 600 MFMs in Beijing[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(05):781-787. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0512.
目的
2
探讨下颌第一磨牙(MFM)近中中央根管(MMC)的发生率并分析其相关因素。
方法
2
筛选300名患者的600颗MFM,在CBCT阅读软件中观察其是否存在MMC,并将年龄、性别、牙位和有无根管峡区(RCI)列为可能的相关因素,用SPSS23.0 logistic回归分析筛选相关因素。
结果
2
600颗纳入的MFM中存在MMC的有80颗,且二元回归分析中年龄和有无根管峡区作为相关因素差异有统计学意义(
P
<0.05)。
结论
2
MMC在MFM中的发生率约为13.3%,并非传统意义上的“罕见”,其发生与患者的年龄和患牙根内的RCI结构相关,与性别和牙位无关。
Objective
2
To find out the incidence of middle mesial canal (MMC) in mandibular first molars (MFM) and analyze its relevant factors.
Methods
2
This research took 600 MFMs’ CBCT files from 300 clinical patients, and observed whether there was MMC existing in those MFMs. Meanwhile, the author took age, sex, sites and RCI (root canal isthmus) existence as 4 independent variables and MMC as dependent variable, trying to find out relevant factors of MMC incidence through SPSS23.0 logistic analysis.
Results
2
Totally, 80 of 600 MFMs were discovered with MMC, accounting for 13.3% of total subjects. Age and RCI existence proved significantly relevant to MMC discoveries (
P
<0.05).
Conclusions
2
The incidence of MMC in MFMs is about 13.3%, which is much higher than that of conventional concepts. Its relevant factors are age and RCI existence, while “gender” and “sites” were irrelevant.
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