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Kinematic analysis of work-related musculoskeletal loading of trunk among dentists in Germany

BACKGROUND: In Germany, about 86.7 % of the dentists have stated to suffer from pain in the neck and shoulder region. These findings are predominantly based on surveys. Therefore the objective of this study is to conduct a kinematic analysis of occupational posture in dentistry. METHODS: Twenty one...

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Autores principales: Ohlendorf, Daniela, Erbe, Christina, Hauck, Imke, Nowak, Jennifer, Hermanns, Ingo, Ditchen, Dirk, Ellegast, Rolf, Groneberg, David A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5069924/
https://www.ncbi.nlm.nih.gov/pubmed/27756271
http://dx.doi.org/10.1186/s12891-016-1288-0
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author Ohlendorf, Daniela
Erbe, Christina
Hauck, Imke
Nowak, Jennifer
Hermanns, Ingo
Ditchen, Dirk
Ellegast, Rolf
Groneberg, David A.
author_facet Ohlendorf, Daniela
Erbe, Christina
Hauck, Imke
Nowak, Jennifer
Hermanns, Ingo
Ditchen, Dirk
Ellegast, Rolf
Groneberg, David A.
author_sort Ohlendorf, Daniela
collection PubMed
description BACKGROUND: In Germany, about 86.7 % of the dentists have stated to suffer from pain in the neck and shoulder region. These findings are predominantly based on surveys. Therefore the objective of this study is to conduct a kinematic analysis of occupational posture in dentistry. METHODS: Twenty one dentists (11 f/10 m; age: 40.1 ± 10.4 years) have participated in this examination. The CUELA-System was used to collect kinematic data of the activities on an average dental workday. A detailed, computer-based task analysis took place parallel to the kinematic examination. Through the synchronization of data collected from both measurements, patterns of posture were arranged chronologically and in conjunction with the tasks performed: (I) “treatment” (II) “office” and (III) “other activities”. For the data analysis, characteristic data of joint angular distributions (percentiles P05, P25, P50, P75 and P95) of head, neck and torso at pre-defined tasks were examined and assessed corresponding to ergonomic standards. RESULTS: Forty one percent of tasks executed on an average dental workday can be categorized as the treatment of patients. These tasked are most frequently performed in “straight back” positions (78.7 %), whereas 20.1 % were carried out in a “twisted or inclined” torso posture, 1.1 % “bowed” and only 0.1 % “bowed and twisted/inclined to the side” upper body position. In particular, it can be observed that in the area of the cervical and thoracic spine the 75th and 95th percentile show worse angular values during treatment than during non-dental tasks. For the period of treatment (at a standardized dental chair construction), a seated position with a strong inclination of the thoracic spine to the right while the lumbar spine is inclined towards the left is adopted. CONCLUSION: The kinematic analysis of dentists illustrates typical patterns of postures during tasks that are essential to the dental treatment of patients. The postures in the area of the cervical and thoracic spine have higher angular values during treatment compared to other dental tasks. Consistently, appropriate ergonomic design measures to optimize the dental chair and equipment as well as integrated training in ergonomics as part of the study of dentistry to prevent musculoskeletal are recommended. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12891-016-1288-0) contains supplementary material, which is available to authorized users.
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spelling pubmed-50699242016-10-24 Kinematic analysis of work-related musculoskeletal loading of trunk among dentists in Germany Ohlendorf, Daniela Erbe, Christina Hauck, Imke Nowak, Jennifer Hermanns, Ingo Ditchen, Dirk Ellegast, Rolf Groneberg, David A. BMC Musculoskelet Disord Research Article BACKGROUND: In Germany, about 86.7 % of the dentists have stated to suffer from pain in the neck and shoulder region. These findings are predominantly based on surveys. Therefore the objective of this study is to conduct a kinematic analysis of occupational posture in dentistry. METHODS: Twenty one dentists (11 f/10 m; age: 40.1 ± 10.4 years) have participated in this examination. The CUELA-System was used to collect kinematic data of the activities on an average dental workday. A detailed, computer-based task analysis took place parallel to the kinematic examination. Through the synchronization of data collected from both measurements, patterns of posture were arranged chronologically and in conjunction with the tasks performed: (I) “treatment” (II) “office” and (III) “other activities”. For the data analysis, characteristic data of joint angular distributions (percentiles P05, P25, P50, P75 and P95) of head, neck and torso at pre-defined tasks were examined and assessed corresponding to ergonomic standards. RESULTS: Forty one percent of tasks executed on an average dental workday can be categorized as the treatment of patients. These tasked are most frequently performed in “straight back” positions (78.7 %), whereas 20.1 % were carried out in a “twisted or inclined” torso posture, 1.1 % “bowed” and only 0.1 % “bowed and twisted/inclined to the side” upper body position. In particular, it can be observed that in the area of the cervical and thoracic spine the 75th and 95th percentile show worse angular values during treatment than during non-dental tasks. For the period of treatment (at a standardized dental chair construction), a seated position with a strong inclination of the thoracic spine to the right while the lumbar spine is inclined towards the left is adopted. CONCLUSION: The kinematic analysis of dentists illustrates typical patterns of postures during tasks that are essential to the dental treatment of patients. The postures in the area of the cervical and thoracic spine have higher angular values during treatment compared to other dental tasks. Consistently, appropriate ergonomic design measures to optimize the dental chair and equipment as well as integrated training in ergonomics as part of the study of dentistry to prevent musculoskeletal are recommended. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12891-016-1288-0) contains supplementary material, which is available to authorized users. BioMed Central 2016-10-18 /pmc/articles/PMC5069924/ /pubmed/27756271 http://dx.doi.org/10.1186/s12891-016-1288-0 Text en © The Author(s). 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Ohlendorf, Daniela
Erbe, Christina
Hauck, Imke
Nowak, Jennifer
Hermanns, Ingo
Ditchen, Dirk
Ellegast, Rolf
Groneberg, David A.
Kinematic analysis of work-related musculoskeletal loading of trunk among dentists in Germany
title Kinematic analysis of work-related musculoskeletal loading of trunk among dentists in Germany
title_full Kinematic analysis of work-related musculoskeletal loading of trunk among dentists in Germany
title_fullStr Kinematic analysis of work-related musculoskeletal loading of trunk among dentists in Germany
title_full_unstemmed Kinematic analysis of work-related musculoskeletal loading of trunk among dentists in Germany
title_short Kinematic analysis of work-related musculoskeletal loading of trunk among dentists in Germany
title_sort kinematic analysis of work-related musculoskeletal loading of trunk among dentists in germany
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5069924/
https://www.ncbi.nlm.nih.gov/pubmed/27756271
http://dx.doi.org/10.1186/s12891-016-1288-0
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