口腔医学研究

口腔医学研究 ›› 2017, Vol. 33 ›› Issue (2): 202-206.DOI: 10.13701/j.cnki.kqyxyj.2017.02.021

• 临床研究论著 • 上一篇    下一篇

T-ScanⅢ应用于牙根纵裂患者咬合特征分析的初步研究

常晓荣, 齐俊丽, 耿瑶, 陈少丽, 范雪平, 刘学军*   

  1. 郑州大学口腔医学院 河南 郑州 450052
  • 收稿日期:2016-07-12 出版日期:2017-02-20 发布日期:2017-02-22
  • 通讯作者: 刘学军,E-mail:lxj@zzu.edu.cn
  • 作者简介:常晓荣(1988~ ),女,河南濮阳人,硕士,主要从事牙体牙髓病学的临床治疗工作。
  • 基金资助:
    河南省医学科技攻关普通项目(编号:201403119)

Preliminary Study on Occlusal Characteristics Analyzed with T-Scan Ⅲ for Patients with Vertical Root Fracture.

CHANG Xiao-rong, QI Jun-li, GENG Yao, CHEN Shao-li, FAN Xue-ping, LIU Xue-jun*   

  1. School of Stomatology, Zhengzhou University. Zhengzhou 450052, China.
  • Received:2016-07-12 Online:2017-02-20 Published:2017-02-22

摘要： 目的:探讨牙根纵裂(vertical root fractures,VRF)发生的牙合因素。方法:应用T-ScanⅢ咬合分析仪对8例VRF患者及个别正常牙合者分别进行正中及侧方咬合记录,定量数据牙合力百分比值(tooth occlusal force percent-ages,T-FP)、双侧牙合力百分比值(two sides force percentages,TS-FP)、牙合力不对称指数(asymmetry index of occlusal force,AOF)、闭合时间(occlusion time,OT)、侧方牙合分离时间(disclusion time,DT)采用配对资料的符号秩和检验分析,定性数据早接触、牙合力中心点 (center of force,COF) 位置及偏移方向采用Fisher确切概率法检验分析,检验水准α=0.05,P<0.05差异有统计学意义。结果:VRF组T-FP、AOF、OT、DT大于正常对照组,差异具有统计学意义(P<0.05);2组COF位置差异具有统计学意义(P<0.05),TS-FP、早接触发生率、COF偏移方向差异无统计学意义(P>0.05)。结论:VRF患者全口牙合力分布不均衡,双侧 牙合力分布不对称,牙合接触稳定性差。

关键词: 牙根纵裂, T-Scan, 咬合特征

Abstract: Objective: To analyze the occlusal characteristics in patients with vertical root fracture (VRF) using T-scan Ⅲ. Methods: The occlusal courses of 8 patients with VRF and normal occlusion were recorded by T-Scan III system in intercuspal position (ICP) and lateral movement. The distribution of tooth occlusal force percentages (T-FP), two sides occlusal force percentages (TS-FP), occlusion time (OT), disclusion time (DT), and asymmetry index of occlusal force (AOF) were examined by Wilcoxon matched-pairs signed-ranks sum test. The distribution of premature contact and the position of center of force (COF) were examined by Fisher's Exact Test. All tests were used at two-tailed significant level 0.05. The result was significantly different when P<0.05. Results: T-FP, AOF, OT, and DT in VRF group were more than those in the control group (P<0.05). There was significant difference in the COF between two groups (P<0.05). However, there were no significant differences on the excursion direction of COF, TS-FP, and the incidence of premature contact between two groups. Conclusion: There was unbalanced occlusion in patients with VRF. Unbalance and poor stability of occlusion contact can contribute to the occurance of VRF.

Key words: Vertical root fracture (VRF), T-Scan, Occlusal characteristics

中图分类号: