Clinical application of cone beam computer tomography in detecting bevel angle of cusp tooth

Zhang Jian

doi:10.13406/j.cnki.cyxb.002576

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Clinical application of cone beam computer tomography in detecting bevel angle of cusp tooth

更新时间：2024-01-09

- Clinical application of cone beam computer tomography in detecting bevel angle of cusp tooth
- Journal of Chongqing Medical University Vol. 46, Issue 8, Pages: 968-971(2021)
- 作者机构：
  
  遵义医科大学附属口腔医院牙体牙髓病科,遵义,563000
- 作者简介：
- 基金信息：
- DOI：10.13406/j.cnki.cyxb.002576
  CLC： R14
- Published：2021，
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Zhang Jian. Clinical application of cone beam computer tomography in detecting bevel angle of cusp tooth. [J]. Journal of Chongqing Medical University 46(8):968-971(2021)
DOI：

Zhang Jian. Clinical application of cone beam computer tomography in detecting bevel angle of cusp tooth. [J]. Journal of Chongqing Medical University 46(8):968-971(2021) DOI： 10.13406/j.cnki.cyxb.002576.

摘要

目的：拟通过锥形束状计算机断层扫描技术（cone beam computer tomography，CBCT）检测正常牙及隐裂牙牙尖斜面交角的差异，为快速、无创的隐裂牙诊断提供理论依据。方法：按照病例纳入标准，收集隐裂牙组22例（上颌第一磨牙及下颌第一磨牙各11颗），正常牙组44例（上颌第一磨牙及下颌第一磨牙各22颗），分别经CBCT扫描三维重建后，测量上、下颌第一磨牙近、远中颊舌牙尖斜面交角。结果：隐裂牙组和正常牙组上颌第一磨牙近中颊舌牙尖斜面交角分别为106.70°±7.69°和119.50°±7.97°，远中颊舌牙尖斜面交角为109.30°±7.15°和115.00°±7.48°，下颌第一磨牙近中颊舌牙尖斜面交角为104.40°±6.81°和117.20°±9.25°，远中颊舌牙尖斜面交角为105.60°±7.78°和114.70°±8.35°。隐裂牙组的牙尖斜面交角小于正常组（P<0.05）。结论：通过检测牙颊舌尖斜面交角发现，角度越小发生隐裂牙的可能性越大，为CBCT在临床早期检测牙隐裂提供理论依据。

Abstract

Objective: To study the difference in the cuspal incline angle of normal and cracked teeth by cone beam computer tomography (CBCT)

providing a theoretical basis for the rapid and non-invasive diagnosis of cracked teeth. Methods: According to the case inclusion criteria

22 patients were included in the cracked teeth group (11 maxillary first molars and 11 mandibular first molars) and 44 patients were included in the normal teeth group (22 maximum first molars and 22 mandibular first molars). After 3D reconstruction by CBCT scans

oblique angles of the mesial

buccal

lingual and mesial angles of the maxillary first molars were measured. Results: Oblique angles of the mesial and buccal tongue tips of the maxillary first molars in two groups were 106.70°±7.69°and 119.50°±7.97°

respectively

and of the distal and middle buccal and tongue tips were 109.30°±7.15°and 115.00°±7.48°. Oblique angles of the mesial and buccal tongue tips of the mandibular first molars were 104.40°±6.81°and 117.20°±9.25°

and of the distal and middle buccal and tongue tips were 105.60°±7.78°and 114.70°±8.35°. Oblique angle of the cusp in the cracked tooth group was smaller than that in the normal group (P<0.05). Conclusion: After detecting the oblique angle

it is found that the smaller the angle

the greater possibility of the occurrence of cracked teeth is

which provides a theoretical basis for the early detection of tooth cracks by CBCT.

关键词

牙隐裂咬合生物力学

Keywords

cracked teethocclusionbiomechanics

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Department of Orthopedics,the Affiliated Yongchuan Hospital,Chongqing Medical University

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