基于CBCT分析下颌第三磨牙萌出状态对下颌第二磨牙牙槽骨缺损的影响

陈思思; 朱可石; 张宝平

doi:10.16016/j.1000-5404.202009169

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基于CBCT分析下颌第三磨牙萌出状态对下颌第二磨牙牙槽骨缺损的影响

临床医学 | 更新时间：2026-01-09

- 基于CBCT分析下颌第三磨牙萌出状态对下颌第二磨牙牙槽骨缺损的影响
- Effect of eruption of mandibular third molars on alveolar bone defect of mandibular second molars: a study based on cone beam computed tomography
- 第三军医大学学报 2021年43卷第6期页码：529-533
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- 作者简介：
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- DOI：10.16016/j.1000-5404.202009169
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- 收稿：2020-09-20，
  
  纸质出版：2021-03-30
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陈思思, 朱可石, 张宝平. 基于CBCT分析下颌第三磨牙萌出状态对下颌第二磨牙牙槽骨缺损的影响[J]. 第三军医大学学报, 2021,43(6):529-533.

Sisi CHEN, Keshi ZHU, Baoping ZHANG. Effect of eruption of mandibular third molars on alveolar bone defect of mandibular second molars: a study based on cone beam computed tomography[J]. Journal of Third Military Medical University, 2021, 43(6): 529-533.
陈思思, 朱可石, 张宝平. 基于CBCT分析下颌第三磨牙萌出状态对下颌第二磨牙牙槽骨缺损的影响[J]. 第三军医大学学报, 2021,43(6):529-533. DOI： 10.16016/j.1000-5404.202009169.

Sisi CHEN, Keshi ZHU, Baoping ZHANG. Effect of eruption of mandibular third molars on alveolar bone defect of mandibular second molars: a study based on cone beam computed tomography[J]. Journal of Third Military Medical University, 2021, 43(6): 529-533. DOI： 10.16016/j.1000-5404.202009169.

摘要

Abstract

Objective

To investigate the effect of the eruption status of mandibular third molars (MTM) on alveolar bone defects of mandibular second molars (MSM) using cone beam computed tomography (CBCT).

Methods

A total of 79 patients with impacted MTM combined with alveolar bone defect of MSM treated in our hospital from June 2018 to July 2019 were enrolled in this study. Occlusal plane angle (AOP)

types of MTM impaction

and cementoenamel junction (CEJ) distances between distal MSMs and mesial MTMs (TMCEJ-DCEJ) were determined by CBCT. The general information of the patients

including gender and age

was also reviewed to analyze the influencing factors on alveolar bone defect of MSM.

Results

As for the patients aged ≥65 years

there were no significant differences in bone resorption between the distal and mesial alveolar bone. However

the bone resorption of the distal alveolar bone was greater than that of the mesial alveolar bone in the patients at age of 25~34

35~44

45~54 and 55~64 years (

0.05). Significant differences were observed in the bone resorption among different age groups (

0.05). For the 7

9 patients with impacted MTM combined with alveolar bone defect of MSM

43 cases had mild

20 moderate and 16 severe defects. The severity of alveolar bone defect in MSM was significantly correlated with age

ratio of CEJ-defect distance to tooth root length

AOP

type of MTM impaction and the TMCEJ-DCEJ of the patients (

0.05).

Conclusion

The eruption status of MTM can affect the alveolar bone defect of MSM. With the aid of CBCT

AOP of 11°~79°

high impacted MTM

and TMCEJ-DCEJ distance of 6~9 mm can increase the incidence of caries on the distal aspect in MSM and dental caries in MTM.

关键词

Keywords

references

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