I Hauck1, C Erbe2, J Nowak1, I Hermanns3, D Ditchen3, R Ellegast3, G Oremek1, D A Groneberg1, D Ohlendorf4. 1. Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe University, Frankfurt am Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt am Main, Germany. 2. School of Dentistry, Department of Orthodontics, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany. 3. Institute for Occupational Health and Safety (IFA), German Social Accident Insurance (DGUV), Sankt Augustin, Germany. 4. Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe University, Frankfurt am Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt am Main, Germany. ohlendorf@med.uni-frankfurt.de.
Abstract
PURPOSE: The aim of this study is to conduct a kinematic analysis of occupational posture in orthodontists. METHODS: A representative sample of 21 (13 female/8 male) residents in orthodontics and orthodontists was studied. The CUELA system collects kinematic data of the occupational posture. Alongside the kinematic analysis, the tasks performed on-site were also subject to a detailed computerized analysis. Data analysis comprised the evaluation and comparison of joint angle distribution in accordance with ergonomic standards categorized as neutral, moderate or awkward posture. RESULTS: The most common activities were executed in a seated position. During "treatment" (28% of total time) participants most often worked with a straight back (84.7%), whereas a "bent or twisted" torso posture was observed 23.4% of the time. For head and cervical spine, the 75th and 95th percentiles presented worse (higher) values during treatment as compared to non-orthodontic activities. The seated position next to the patient during treatment showed a stronger inclination of the thoracic spine to the right and an inclination of the lumber spine to the left. CONCLUSIONS: Orthodontists do take characteristic postures during treatment activities with highest angle values. The postures differ in the area of head and cervical spine with regard to the various activities carried out in the 3 categories.
PURPOSE: The aim of this study is to conduct a kinematic analysis of occupational posture in orthodontists. METHODS: A representative sample of 21 (13 female/8 male) residents in orthodontics and orthodontists was studied. The CUELA system collects kinematic data of the occupational posture. Alongside the kinematic analysis, the tasks performed on-site were also subject to a detailed computerized analysis. Data analysis comprised the evaluation and comparison of joint angle distribution in accordance with ergonomic standards categorized as neutral, moderate or awkward posture. RESULTS: The most common activities were executed in a seated position. During "treatment" (28% of total time) participants most often worked with a straight back (84.7%), whereas a "bent or twisted" torso posture was observed 23.4% of the time. For head and cervical spine, the 75th and 95th percentiles presented worse (higher) values during treatment as compared to non-orthodontic activities. The seated position next to the patient during treatment showed a stronger inclination of the thoracic spine to the right and an inclination of the lumber spine to the left. CONCLUSIONS: Orthodontists do take characteristic postures during treatment activities with highest angle values. The postures differ in the area of head and cervical spine with regard to the various activities carried out in the 3 categories.
Authors: Liesbeth Groenesteijn; Rolf P Ellegast; Kathrin Keller; Frank Krause; Helmut Berger; Michiel P de Looze Journal: Appl Ergon Date: 2011-06-29 Impact factor: 3.661
Authors: Stefanie Mache; Cristian Scutaru; Karin Vitzthum; Alexander Gerber; David Quarcoo; Tobias Welte; Torsten T Bauer; Michael Spallek; Andreas Seidler; Albert Nienhaus; Burghard F Klapp; David A Groneberg Journal: J Occup Med Toxicol Date: 2008-12-18 Impact factor: 2.646
Authors: Daniela Ohlendorf; Mario Schwarzer; Julia Rey; Ingo Hermanns; Albert Nienhaus; Rolf Ellegast; Dirk Ditchen; Stefanie Mache; David A Groneberg Journal: J Occup Med Toxicol Date: 2015-01-09 Impact factor: 2.646
Authors: Daniela Ohlendorf; Laura Maltry; Jasmin Hänel; Werner Betz; Christina Erbe; Christian Maurer-Grubinger; Fabian Holzgreve; Eileen M Wanke; Dörthe Brüggmann; Albert Nienhaus; David A Groneberg Journal: J Occup Med Toxicol Date: 2020-07-06 Impact factor: 2.646