牙根发育对正畸牵引后埋伏前牙牙根及牙周组织的影响

doi:10.19439/j.sjos.2021.02.010

上海口腔医学 ›› 2021, Vol. 30 ›› Issue (2): 162-166.doi: 10.19439/j.sjos.2021.02.010

牙根发育对正畸牵引后埋伏前牙牙根及牙周组织的影响

谢蕾, 肖遥, 曾锦, 谢乙加

西南医科大学附属口腔医院正畸科,四川泸州 646000

收稿日期:2020-04-27 修回日期:2020-08-14 出版日期:2021-04-25 发布日期:2021-05-11
通讯作者: 谢蕾,E-mail：XL0623@163.com
作者简介:谢蕾（1984-）,女,硕士,医师
基金资助:
四川省泸州市科技局应用基础研究（2019-JYJ-5）

Effect of root development on the root and periodontal absorptions of maxillary impacted anterior teeth after orthodontic traction

XIE Lei, XIAO Yao, ZENG Jin, XIE Yi-jia

Department of Orthodontics, Hospital of Stomatology, Southwest Medical University. Luzhou 646000, Sichuan Province, China

Received:2020-04-27 Revised:2020-08-14 Online:2021-04-25 Published:2021-05-11

摘要/Abstract

摘要： 目的:基于锥形束CT（CBCT）研究牙根发育对正畸牵引后埋伏前牙牙根及牙周组织的影响。方法:选择2018年7月—2019年3月西南医科大学附属口腔医院收治的需行上颌埋伏前牙正畸牵引治疗患者34例,共34颗上颌埋伏阻生前牙。根据牙根发育情况,分为未完全发育组和完全发育组,每组各17例。所有患者均行正畸牵引治疗。比较2组患者牙根长度、根管壁厚度、牙髓活力、附着龈宽度、牙根周围骨密度、正畸牵引时间。采用SPSS 20.0软件包对数据进行统计学分析。结果:治疗前,完全发育组牙根长度显著大于未完全发育组（P<0.05）;治疗后,未完全发育组牙根长度显著大于完全发育组（P<0.05）。治疗前,完全发育组根管壁厚度显著大于未完全发育组（P<0.05）;治疗后,2组根管壁厚度比较无显著差异（P>0.05）。治疗后,2组牙髓活力相比无显著差异（P>0.05）;2组附着龈宽度相比无显著差异（P>0.05）;2组牙根周围骨密度均显著降低（P<0.05）,完全发育组显著低于未完全发育组（P<0.05）;完全发育组正畸牵引时间显著长于未完全发育组（P<0.05）。结论:对牙根发育未完全埋伏前牙行正畸牵引,牙根吸收程度较轻,牙周组织改建快,牵引时间短,且埋伏前牙牙根和根管壁正常发育,牙髓活力正常。

关键词: 锥形束CT, 牙根发育, 正畸牵引, 埋伏前牙

Abstract: PURPOSE: To investigate the effect of root development on root and periodontal tissues of maxillary impacted anterior teeth after orthodontic traction based on cone-beam CT (CBCT). METHODS: Thirty-four patients (34 teeth) requiring orthodontic traction for maxillary impacted anterior teeth in Southwest Medical University Affiliated Stomatological Hospital from July 2018 to March 2019 were selected. The patients were divided into incomplete development group and complete development group according to root development, each with 17 cases. All patients received orthodontic traction treatment. Root length, thickness of root canal wall, pulp vitality, width of the attachment ridge, bone mineral density around root and orthodontic traction time were compared between the two groups. Statistic analysis was completed by SPSS 20.0 software package. RESULTS: Root length of complete development group was significantly longer than that of incomplete development group before treatment(P<0.05). After treatment, the root length of incomplete development group was significantly longer than that of the complete development group(P<0.05). The thickness of root canal wall was significantly greater in complete development group than in incomplete development group before treatment (P<0.05), which had no significant difference between groups after treatment(P>0.05). The pulp vitality and width of the attachment ridge had no significant difference between two groups after treatment(P>0.05). Bone mineral density around root was significantly decreased in both groups after treatment(P<0.05), and was lower in complete development group than in incomplete development group(P<0.05). The orthodontic traction time in the complete development group was significantly longer than that in incomplete development group(P<0.05). CONCLUSIONS: In orthodontic traction treatment, the impacted anterior teeth with undeveloped roots have advantages of mild root absorption, rapid periodontal tissue reconstruction, short orthodontic traction time with the root, thickness of root canal wall and pulp vitality in the normal range.

Key words: Cone-beam CT, Root development, Orthodontic traction, Impacted anterior teeth

中图分类号:

R782.1

谢蕾, 肖遥, 曾锦, 谢乙加. 牙根发育对正畸牵引后埋伏前牙牙根及牙周组织的影响[J]. 上海口腔医学, 2021, 30(2): 162-166.

XIE Lei, XIAO Yao, ZENG Jin, XIE Yi-jia. Effect of root development on the root and periodontal absorptions of maxillary impacted anterior teeth after orthodontic traction[J]. Shanghai Journal of Stomatology, 2021, 30(2): 162-166.

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牙根发育对正畸牵引后埋伏前牙牙根及牙周组织的影响

Effect of root development on the root and periodontal absorptions of maxillary impacted anterior teeth after orthodontic traction

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