A Novel Quantitative Method for Tooth Grinding Surface Assessment Using 3D Scanning.

Benedikt Sagl,Klara Janjić,Eva Piehslinger,Xiaohui Rausch-Fan,Brenda Laky,Ferida Besirevic-Bulic,Martina Schmid-Schwap

doi:10.3390/diagnostics11081483

Abstract

Sleep bruxism is an oral parafunction that involves involuntary tooth grinding and clenching. Splints with a colored layer that gets removed during tooth grinding are a common tool for the initial diagnosis of sleep bruxism. Currently, such splints are either assessed qualitatively or using 2D photographs, leading to a non-neglectable error due to the 3D nature of the dentition. In this study we propose a new and fast method for the quantitative assessment of tooth grinding surfaces using 3D scanning and mesh processing. We assessed our diagnostic method by producing 18 standardized splints with 8 grinding surfaces each, giving us a total of 144 surfaces. Moreover, each splint was scanned and analyzed five times. The accuracy and repeatability of our method was assessed by computing the intraclass correlation coefficient (ICC) as well reporting means and standard deviations of surface measurements for intra- and intersplint measurements. An ICC of 0.998 was computed as well as a maximum standard deviation of 0.63 mm2 for repeated measures, suggesting an appropriate accuracy of our proposed method. Overall, this study proposes an innovative, fast and cost effective method to support the initial diagnosis of sleep bruxism.

Highlights

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Bruxism is defined as an oral parafunction involving involuntary tooth grinding and clenching [1]
This study proposes an innovative, fast and cost effective method to support the initial diagnosis of sleep bruxism

Summary

Introduction

Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Bruxism is defined as an oral parafunction involving involuntary tooth grinding and clenching [1]. A distinction is made between awake and sleep bruxism, which potentially have different origins and pathophysiology [2]. Bruxism is a possible risk factor for different pathologies and can lead to severe abrasion of teeth, tooth hypermobility, masticatory muscle pain, headache, periodontal tissue damage as well as temporomandibular joint (TMJ) pain. Most people will go through phases of tooth grinding or clenching during the course of their lifetime [3] with studies reporting approximately

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