European journal of dental education : official journal of the Association for Dental Education in Europe · 2019
The effect of indirect vision skills on head and shoulder posture amongst Korean dental hygienists.
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Jeong Yeo-Jin, Choi Jun-Seon
Аннотация
OBJECTIVES: This study aimed to investigate the effects of indirect vision skills on head and shoulder posture in dental hygienists.
MATERIALS AND METHODS: This cross-sectional study included a total of 100 female clinical dental hygienists. It evaluated musculoskeletal symptoms of the neck, shoulders and back, head and shoulder posture (craniovertebral angle [CVA] and sagittal shoulder posture angle [SSPA]). Indirect vision skills were assessed using the O'Connor tweezer test under indirect vision with a mirror. To analyse factors associated with the CVA and SSPA, an independent t test, one-way ANOVA, and multiple linear regression analysis were conducted, respectively.
RESULTS: The body region in which the greatest number of symptoms of work-related musculoskeletal disorders was recognised was the neck (89.0%). In the multiple linear regression model, which adjusted for other factors associated with musculoskeletal disorders, dental hygienists with poor indirect vision skills showed relatively small SSPA value (P < .05). However, indirect vision skills were not associated with the CVA value.
CONCLUSIONS: Good indirect vision skills contribute to the prevention of rounded shoulders in dental hygienists. Therefore, where possible, dental hygienists should perform clinical procedures using indirect vision with a dental mirror to maintain a balanced posture and reduce flexion of the back or the neck. A dental hygiene curriculum should include training to improve clinical skills, as well as education regarding dental ergonomics and a monitoring system to determine whether ergonomic principles are well observed.
MATERIALS AND METHODS: This cross-sectional study included a total of 100 female clinical dental hygienists. It evaluated musculoskeletal symptoms of the neck, shoulders and back, head and shoulder posture (craniovertebral angle [CVA] and sagittal shoulder posture angle [SSPA]). Indirect vision skills were assessed using the O'Connor tweezer test under indirect vision with a mirror. To analyse factors associated with the CVA and SSPA, an independent t test, one-way ANOVA, and multiple linear regression analysis were conducted, respectively.
RESULTS: The body region in which the greatest number of symptoms of work-related musculoskeletal disorders was recognised was the neck (89.0%). In the multiple linear regression model, which adjusted for other factors associated with musculoskeletal disorders, dental hygienists with poor indirect vision skills showed relatively small SSPA value (P < .05). However, indirect vision skills were not associated with the CVA value.
CONCLUSIONS: Good indirect vision skills contribute to the prevention of rounded shoulders in dental hygienists. Therefore, where possible, dental hygienists should perform clinical procedures using indirect vision with a dental mirror to maintain a balanced posture and reduce flexion of the back or the neck. A dental hygiene curriculum should include training to improve clinical skills, as well as education regarding dental ergonomics and a monitoring system to determine whether ergonomic principles are well observed.