Ji-Min Lee, Keunbada Son, Jin-Wook Kim, Myoung-Uk Jin, Kyu-Bok Lee
{"title":"在口腔内扫描和牙齿准备期间,符合人体工程学的牙医凳设计对肌肉骨骼健康有积极影响吗?","authors":"Ji-Min Lee, Keunbada Son, Jin-Wook Kim, Myoung-Uk Jin, Kyu-Bok Lee","doi":"10.11607/ijp.8672","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the effects of an ergonomic dentist stool design on muscle activity and fatigue in dentists.</p><p><strong>Materials and methods: </strong>A total of 14 dentists were recruited, and electrodes were attached to the arm, neck, and shoulder muscles of these dentists according to the surface electromyography (EMG) for the noninvasive assessment of muscles protocol. After measuring the maximal voluntary contraction, eightchannel surface EMG was performed during simulations of two dental procedures (intraoral scanning and tooth preparation) while the dentists were using two types of dentist stools. Furthermore, muscle activity and fatigue were determined based on eight-channel surface EMG data, and ergonomic risk levels were evaluated according to the muscle activity. Shapiro-Wilk test was used to confirm that all data were normally distributed, and Mann-Whitney U test was used to compare the two types of dentist stools (α = .05).</p><p><strong>Results: </strong>There was a significant difference between the conventional and ergonomically designed dentist stools in terms of the activity of the trapezius descendens muscle (P < .05). Notably, the activity of the trapezius descendens muscle was less when the dentists used ergonomically designed dentist stools than when they used a conventional dentist stool. The activity of all muscles, except for the sternocleidomastoid, indicated moderate ergonomic risk.</p><p><strong>Conclusions: </strong>A dentist stool that enables dentists to maintain ergonomic posture should be used to prevent musculoskeletal disorders.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"644-649"},"PeriodicalIF":0.0000,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Does an Ergonomic Dentist Stool Design Have a Positive Impact on Musculoskeletal Health During Intraoral Scans and Tooth Preparation?\",\"authors\":\"Ji-Min Lee, Keunbada Son, Jin-Wook Kim, Myoung-Uk Jin, Kyu-Bok Lee\",\"doi\":\"10.11607/ijp.8672\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Purpose: </strong>To evaluate the effects of an ergonomic dentist stool design on muscle activity and fatigue in dentists.</p><p><strong>Materials and methods: </strong>A total of 14 dentists were recruited, and electrodes were attached to the arm, neck, and shoulder muscles of these dentists according to the surface electromyography (EMG) for the noninvasive assessment of muscles protocol. After measuring the maximal voluntary contraction, eightchannel surface EMG was performed during simulations of two dental procedures (intraoral scanning and tooth preparation) while the dentists were using two types of dentist stools. Furthermore, muscle activity and fatigue were determined based on eight-channel surface EMG data, and ergonomic risk levels were evaluated according to the muscle activity. Shapiro-Wilk test was used to confirm that all data were normally distributed, and Mann-Whitney U test was used to compare the two types of dentist stools (α = .05).</p><p><strong>Results: </strong>There was a significant difference between the conventional and ergonomically designed dentist stools in terms of the activity of the trapezius descendens muscle (P < .05). Notably, the activity of the trapezius descendens muscle was less when the dentists used ergonomically designed dentist stools than when they used a conventional dentist stool. The activity of all muscles, except for the sternocleidomastoid, indicated moderate ergonomic risk.</p><p><strong>Conclusions: </strong>A dentist stool that enables dentists to maintain ergonomic posture should be used to prevent musculoskeletal disorders.</p>\",\"PeriodicalId\":94232,\"journal\":{\"name\":\"The International journal of prosthodontics\",\"volume\":\"0 0\",\"pages\":\"644-649\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-11-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The International journal of prosthodontics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.11607/ijp.8672\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The International journal of prosthodontics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.11607/ijp.8672","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Does an Ergonomic Dentist Stool Design Have a Positive Impact on Musculoskeletal Health During Intraoral Scans and Tooth Preparation?
Purpose: To evaluate the effects of an ergonomic dentist stool design on muscle activity and fatigue in dentists.
Materials and methods: A total of 14 dentists were recruited, and electrodes were attached to the arm, neck, and shoulder muscles of these dentists according to the surface electromyography (EMG) for the noninvasive assessment of muscles protocol. After measuring the maximal voluntary contraction, eightchannel surface EMG was performed during simulations of two dental procedures (intraoral scanning and tooth preparation) while the dentists were using two types of dentist stools. Furthermore, muscle activity and fatigue were determined based on eight-channel surface EMG data, and ergonomic risk levels were evaluated according to the muscle activity. Shapiro-Wilk test was used to confirm that all data were normally distributed, and Mann-Whitney U test was used to compare the two types of dentist stools (α = .05).
Results: There was a significant difference between the conventional and ergonomically designed dentist stools in terms of the activity of the trapezius descendens muscle (P < .05). Notably, the activity of the trapezius descendens muscle was less when the dentists used ergonomically designed dentist stools than when they used a conventional dentist stool. The activity of all muscles, except for the sternocleidomastoid, indicated moderate ergonomic risk.
Conclusions: A dentist stool that enables dentists to maintain ergonomic posture should be used to prevent musculoskeletal disorders.