椅旁数字化模型上测量牙尖斜面夹角的可靠性研究

doi:10.7518/hxkq.2018.01.011

华西口腔医学杂志 ›› 2018, Vol. 36 ›› Issue (1): 56-59.doi: 10.7518/hxkq.2018.01.011

椅旁数字化模型上测量牙尖斜面夹角的可靠性研究

刘星纲¹(), 陈小贤²()

1.首都医科大学附属北京口腔医院修复科,北京 100050
2.北京大学口腔医院门诊部,北京 100034

出版日期:2018-02-07 发布日期:2018-02-01
作者简介:
刘星纲,副主任医师,博士,E-mail:xinggang_liu@126.com
基金资助:
[基金项目] 北京口腔医院学科建设基金面上项目（13-9-20）;2017年度北京市属医院科研培育计划（PX2017031）

Reliability study in the measurement of the cusp inclination angle of a chairside digital model

Xinggang Liu¹(), Xiaoxian Chen²()

1. Dept. of Prosthodontics, Beijing Stomatological Hospital, Capital Medical University, Beijing 100050, China
2. First Dental Center, Peking University Hospital of Stomatology, Beijing 100034, China

Online:2018-02-07 Published:2018-02-01
Supported by:
Supported by: The Project of the Discipline Construction Fund of Beijing Stomatological Hospital (13-9-20);Research and Cultivation Plan of Beijing Municipal Hospital in 2017 (PX2017031).

摘要/Abstract

摘要：

目的评价使用第三方软件测量椅旁数字化模型的牙尖斜面夹角的可靠性。方法 21副石膏模型修整出二维截面后作为实验对象,使用椅旁数字化印模技术获取三维模型,第三方软件测量数字模型上牙尖斜面夹角,重复3次;手工测量实验模型牙尖斜面夹角作为金标准。统计组内相关系数（ICC）和t值,评价测量的一致性。结果 2种测量方法行配对t检验分析,结果差异无统计学意义（P=0.91）;两种测量方法的ICC均大于0.9;每种测量方法3次重复的ICC也大于0.9;数字化模型具有更小的变异系数（9.9%）。结论第三方软件测量数字化模型的牙尖角度具有良好的可靠性。

关键词: 椅旁数字化印模, 计算机辅助设计与辅助制造, 牙尖斜面夹角, 可靠性, 组内相关系数

Abstract:

Objective This study aims to evaluate the reliability of the software Picpick in the measurement of the cusp inclination angle of a digital model. Methods Twenty-one trimmed models were used as experimental objects. The chair-side digital impression was then used for the acquisition of 3D digital models, and the software Picpick was employed for the measurement of the cusp inclination of these models. The measurements were repeated three times, and the results were compared with a gold standard, which was a manually measured experimental model cusp angle. The intraclass correlation coefficient (ICC) was calculated. Results The paired t test value of the two measurement methods was 0.91. The ICCs be-tween the two measurement methods and three repeated measurements were greater than 0.9. The digital model achieved a smaller coefficient of variation (9.9%). Conclusion The software Picpick is reliable in measuring the cusp inclination of a digital model.

Key words: chairside digital impression, computer-aided design and computer-aided manufacturing, cusp inclination angle, reliability, intraclass correlation coefficient

中图分类号:

R783

刘星纲, 陈小贤. 椅旁数字化模型上测量牙尖斜面夹角的可靠性研究[J]. 华西口腔医学杂志, 2018, 36(1): 56-59.

Xinggang Liu, Xiaoxian Chen. Reliability study in the measurement of the cusp inclination angle of a chairside digital model[J]. West China Journal of Stomatology, 2018, 36(1): 56-59.

图/表 3

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椅旁数字化模型上测量牙尖斜面夹角的可靠性研究

Reliability study in the measurement of the cusp inclination angle of a chairside digital model

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