{"title":"A Pilot Study on the Estimation of Bite Force Using Electromyograms of the Masticatory Muscles.","authors":"Sota Takahashi, Taihiko Yamaguchi, Toshinori Nakajima, Masana Maeda, Miku Saito, Tomoya Ishimaru, Saki Mikami, Akihito Gotouda","doi":"10.1111/joor.70055","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>It has not been established how electromyographic (EMG) data of masticatory muscles can estimate bite force (BF) during daily activities at home, such as eating and bruxism, utilising the EMG-BF correlation.</p><p><strong>Objective: </strong>This study aimed to investigate the relationship between actual BF and BF estimated using corresponding EMG data and additional information on BF and EMG measured on a separate day.</p><p><strong>Methods: </strong>Participants were 16 volunteers. The unilateral masseteric EMG was recorded during clenching tasks at 10 levels of force up to maximum voluntary clenching (MVC) twice on separate days (Day 1, Day 2). BF was simultaneously measured using a pressure-sensitive occlusal film. The regression equation between the BF and EMG amplitude was calculated on Day 1. Estimated BF on Day 2 was calculated using information on the EMG amplitude on Day 2 (EMG-amp), Day 1 BF at the MVC, and Day 1 regression equation.</p><p><strong>Results: </strong>Actual value of BF showed a small correlation coefficient with EMG-amp, whereas strong correlations were observed with the estimated values additionally using information of Day 1 BF at the MVC. The estimated BF additionally using information of Day 1 regression equation adjusted by the ratio of EMG at the MVC on Day 1 to that of Day 2 showed the smallest error, indicating the power to estimate BF using corresponding EMG data became further improved.</p><p><strong>Conclusions: </strong>The obtained findings suggest the possibility of the clinical method estimating BF using corresponding EMG data with the additional information of EMG and BF on a separate day.</p>","PeriodicalId":16605,"journal":{"name":"Journal of oral rehabilitation","volume":" ","pages":""},"PeriodicalIF":4.0000,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of oral rehabilitation","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1111/joor.70055","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
引用次数: 0
Abstract
Background: It has not been established how electromyographic (EMG) data of masticatory muscles can estimate bite force (BF) during daily activities at home, such as eating and bruxism, utilising the EMG-BF correlation.
Objective: This study aimed to investigate the relationship between actual BF and BF estimated using corresponding EMG data and additional information on BF and EMG measured on a separate day.
Methods: Participants were 16 volunteers. The unilateral masseteric EMG was recorded during clenching tasks at 10 levels of force up to maximum voluntary clenching (MVC) twice on separate days (Day 1, Day 2). BF was simultaneously measured using a pressure-sensitive occlusal film. The regression equation between the BF and EMG amplitude was calculated on Day 1. Estimated BF on Day 2 was calculated using information on the EMG amplitude on Day 2 (EMG-amp), Day 1 BF at the MVC, and Day 1 regression equation.
Results: Actual value of BF showed a small correlation coefficient with EMG-amp, whereas strong correlations were observed with the estimated values additionally using information of Day 1 BF at the MVC. The estimated BF additionally using information of Day 1 regression equation adjusted by the ratio of EMG at the MVC on Day 1 to that of Day 2 showed the smallest error, indicating the power to estimate BF using corresponding EMG data became further improved.
Conclusions: The obtained findings suggest the possibility of the clinical method estimating BF using corresponding EMG data with the additional information of EMG and BF on a separate day.
期刊介绍：
Journal of Oral Rehabilitation aims to be the most prestigious journal of dental research within all aspects of oral rehabilitation and applied oral physiology. It covers all diagnostic and clinical management aspects necessary to re-establish a subjective and objective harmonious oral function.
Oral rehabilitation may become necessary as a result of developmental or acquired disturbances in the orofacial region, orofacial traumas, or a variety of dental and oral diseases (primarily dental caries and periodontal diseases) and orofacial pain conditions. As such, oral rehabilitation in the twenty-first century is a matter of skilful diagnosis and minimal, appropriate intervention, the nature of which is intimately linked to a profound knowledge of oral physiology, oral biology, and dental and oral pathology.
The scientific content of the journal therefore strives to reflect the best of evidence-based clinical dentistry. Modern clinical management should be based on solid scientific evidence gathered about diagnostic procedures and the properties and efficacy of the chosen intervention (e.g. material science, biological, toxicological, pharmacological or psychological aspects). The content of the journal also reflects documentation of the possible side-effects of rehabilitation, and includes prognostic perspectives of the treatment modalities chosen.
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