骨性安氏II类1分类成年患者拔牙矫治前后牙周表型的评估分析

›› 2021, Vol. 41 ›› Issue (2): 159-164.

骨性安氏II类1分类成年患者拔牙矫治前后牙周表型的评估分析

郭爱军¹,张珂绮²,孙莲²

1. 江苏省苏北人民
2. 南京医科大学附属口腔医院正畸科

收稿日期:2020-07-16 修回日期:2020-10-19 出版日期:2021-02-28 发布日期:2021-03-03
通讯作者: 孙莲 E-mail:sunlian@njmu.edu.cn
基金资助:
江苏高校优势学科建设工程资助项目;江苏省科教强卫工程

Evaluation of periodontal phenotypes in skeletal Class II Division 1 adult patients before and after extraction treatment

Received:2020-07-16 Revised:2020-10-19 Online:2021-02-28 Published:2021-03-03
Contact: Lian SUN E-mail:sunlian@njmu.edu.cn

摘要/Abstract

摘要： 目的　分析不同牙周表型的骨性安氏II类1分类成年患者拔牙矫治后上切牙区唇侧骨开裂、骨开窗及牙根吸收情况。方法　研究纳入24例骨性安氏II类1分类成年患者，通过术前CBCT和数字化印模数据的重叠，对前牙牙龈厚度进行无创的定量测量。根据术前上中切牙牙龈厚度将研究对象分为薄龈生物型组（牙龈厚度<1.5mm）和厚龈生物型组（牙龈厚度≥1.5mm）。使用CBCT测量正畸治疗前后上切牙唇侧牙槽骨骨开裂、骨开窗及牙根吸收的程度。结果　骨性安氏II类1分类成年患者术前骨开裂和骨开窗的发生率为31.2%和18.8%，经拔牙正畸治疗后增加至75%和20.8%。薄龈生物型组术后上前牙唇侧牙槽嵴顶至釉牙骨质界距离为3.19 ± 0.43mm，显著高于厚龈生物型组（2.16 ± 0.11mm），但该距离与牙龈厚度无显著相关性（r= -0.1108，P= 0.6146）。牙根吸收程度和牙龈厚度呈正相关（r=0.4223，P=0.0447），且厚龈生物型组牙根吸收量为2.24 ± 1.24mm，显著高于薄龈生物型组（1.08 ± 0.73mm）。结论　骨性安氏II类1分类成年患者经拔牙正畸治疗后上切牙区唇侧牙槽骨骨开窗、骨开裂及牙根吸收均加重，其中薄龈生物型组垂直牙槽骨吸收风险较大，厚龈生物型组骨开窗及牙根吸收风险较大。

关键词: 牙周表型, 正畸治疗, 骨开裂, 骨开窗, 牙根吸收

Abstract: Objective To analyze the labial bone dehiscence, fenestration and root resorption of upper incisors in adult skeletal Class II Division 1 patients with different periodontal phenotypes. Methods 24 cases of skeletal Class II Division 1 adult patients were included in the study. Gingival thickness of upper incisor was measured quantitatively and noninvasively by overlapping CBCT and digital model data before orthodontic treatment. According to the gingival thickness of the upper incisors, patients were divided into thin PP group (gingival thickness < 1.5mm) and thick PP group (gingival thickness ≥ 1.5mm). CBCT was used to measure the occurrence and progress of fenestration, dehiscence and root resorption before and after treatment. Results The incidence of dehiscence and fenestration on upper incisor of all included patients was 31.2% and 18.8% respectively before treatment and increased to 75% and 20.8% after treatment. The distance between the crest of labial alveolar ridge to the cemento-enamal junction (LA-CEJ) was 3.19 ± 0.43mm in the thin PP group, which was significantly higher than that in the thick PP group (2.16 ± 0.11mm), but there was no significant correlation between LA-CEJ and gingival thickness (r = -0.1108, P = 0.6146). There was a positive correlation between root resorption and gingival thickness (r = 0.4223, P = 0.0447). The root resorption in the thick PP group (2.24 ± 1.24mm) was significantly higher than that in the thin PP group (1.08 ± 0.73mm). Conclusions The labial alveolar bone dehiscence, fenestration and root resorption of upper incisors were aggravated after tooth extraction orthodontic treatment. The risk of vertical alveolar bone resorption is increased in the thin PP group, and the risk of bone fenestration and root resorption is increased in the thick PP group.

Key words: Periodontal Phenotype (PP), Orthodontic Treatment, Dehiscence, Fenestration, Root Resorption

中图分类号:

R783.5

郭爱军张珂绮孙莲. 骨性安氏II类1分类成年患者拔牙矫治前后牙周表型的评估分析[J]. 口腔医学, 2021, 41(2): 159-164.

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