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Updated: Feb 3, 2026

Mimicking and Measuring Occlusal Erosive Tooth Wear with the "Rub&Roll" and Non-contact Profilometry
Published on: February 2, 2018
Vertical contact tightness of occlusion comparison between orofacial myalgia patients and asymptomatic controls: a
Kun Qi1,2, Yi-Fei Xu2, Shao-Xiong Guo2
11 Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research & Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, Department of Orthodontics, Stomatological Hospital, Xi'an Jiaotong University, Xi'an, P. R. China.
Objective:
The association between occlusal contact and orofacial pain remains unclear. The aim of this study was to detect occlusal contact tightness by using a new method and to compare differences between patients and asymptomatic controls.
Methods:
Fifteen female patients with orofacial myalgia and fifteen age- and sex-matched asymptomatic controls were enrolled. Occlusal contacts were recorded by making bite imprints. The numbers, sizes, and distributions of the contacts were detected by making photos of bite imprints after biting. The Mann-Whitney U test and ANOVA were used for statistical analysis.
Results:
In myalgia patients, impact contacts at the molar regions were more frequent, larger in number and area size, and were distributed more on guiding cusps, compared with impact contacts in asymptomatic controls.
Conclusion:
Our new method revealed more prevalent and more severe impact contacts in orofacial myalgia patients, compared with asymptomatic controls.
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