应用T-scan III系统对楔状缺损患者牙合接触的研究

›› 2018, Vol. 38 ›› Issue (6): 548-551.

应用T-scan III系统对楔状缺损患者牙合接触的研究

聂晶晶¹,冯加飞²

1. 南京大学医学院附属口腔医院，南京市口腔医院
2. 南京市口腔医院

收稿日期:2017-03-23 修回日期:2017-05-23 出版日期:2018-06-28 发布日期:2018-07-05
通讯作者: 聂晶晶 E-mail:355886355@qq.com

In vivo correlation of wedge-shaped defects and occlusal contact determined with T-scan Ⅲ system

Jing-Jing NIE,Jia-Fei FENG

Received:2017-03-23 Revised:2017-05-23 Online:2018-06-28 Published:2018-07-05
Contact: Jing-Jing NIE E-mail:355886355@qq.com

摘要/Abstract

摘要： 目的测量楔状缺损患牙的接触，探究因素与楔状缺损形成的关系。方法从32例受检者中选取32颗口内单象限内单颗楔状缺损患牙和34颗同名未患楔状缺损牙分别作为实验组和对照组。应用直接接触测量法及T-scan Ⅲ系统分析受检牙干扰的分布，并应用T-scan Ⅲ系统对受检牙在正中、侧方及前伸运动中的接触进行动态、定量测量。结果实验组中单侧组与双侧组患牙的工作侧干扰牙数百分比（75.0%、70.0%）均高于各自对照牙（17.7%、18.2%），差异有统计学意义（P＜0.05）；在侧方工作侧运动中，实验组患牙所分担的力及其咬合高点上接触强度，均高于对照牙，差异有统计学意义（P＜0.05）。结论口内单象限内单颗牙楔状缺损的发生与干扰及力负担过重有关。

关键词: 楔状缺损, T-ScanⅢ系统, 工作侧干扰, 接触

Abstract: Objective To measure the occlusion of teeth with wedge-shaped defects and explore the correlation. Methods Following examination from 32 patients, 32 teeth which were the only teeth with wedge-shaped defect in single quadrant were regarded as the experiment group. Also, 34 teeth with no such non-cariouscervical lesions were regarded as the control group. Routine clinical examination method and the t-scan Ⅲ system were used to check the distribution of premature contacts(PC) on the subject teeth, and the t-scan Ⅲ system was used to take a dynamic, quantitative analysis for occlusal contact in centric occlusion, lateral occlusion and protrusion of subject teeth. Results The proportion of the teeth with premature contact (PC) in working side in wedge-shaped defect teeth from two experiment groups（75.0%，70.0%） was much higher than that in their corresponding control teeth （17.7%，18.2%）(P ＜0.05). In working side, the percentages of occlusal force and the occlusal contact strain of wedge-shaped defect teeth were significantly higher than the control teeth(P ＜0.05). Conclusion Dysfunction occlusal force can have relation to the progression of wedge - shaped defects occurring on single teeth.

Key words: wedge-shaped defect, occlusal interference, occlusal contact

中图分类号:

R781.05

聂晶晶冯加飞. 应用T-scan III系统对楔状缺损患者牙合接触的研究[J]. , 2018, 38(6): 548-551.

Jing-Jing NIE Jia-Fei FENG. In vivo correlation of wedge-shaped defects and occlusal contact determined with T-scan Ⅲ system[J]. , 2018, 38(6): 548-551.

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