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http://dx.doi.org/10.15207/JKCS.2018.9.11.209

A Convergence Study on Changes in the Muscle Activity around the Neck of the Operator according to the Patient's Head Angle at the Direct Visual Inspection of the Maxillary Right-side Molar Palatal Surface  

Lee, Sook-Jeong (Dept. of dental Hygiene, Silla University)
Publication Information
Journal of the Korea Convergence Society / v.9, no.11, 2018 , pp. 209-216 More about this Journal
Abstract
This study aimed to investigate the association of the muscle activity around the neck of the operator(dental hygienists') according to the change in the patient's neck angle during a direct visual inspection on the maxillary right-side molar palatal surface. The operators were $4^{th}$ year dental hygiene students, who are future dentalhy gienists, having accurate understanding on and awareness of the location of the operation site, hand fixation, and how to use the tools. Data on the change in the muscle activity around the neck were collected by using surface electromyography and neck goniometer. SPSS statistics 20 was used for statistical analyses including Shapiro-wilk test and one-way ANOVA. As a result, the activities of the operator upper trapezius, cervical erector spinae, and levator scapulae muscles significantly decreased when the patient's head was angled compared to when it was not. For the angle of the operator head, the head bend significantly decreased when the patient's head was angled than when it was not. Based on the study results, it is expected that angling the patient's head when treating his or her teeth will decrease the excessive muscle activity around the neck of the operator, and will reduce muscle fatigue. Therefore, angling the head of the patient while treating his or her teeth is recommended. This suggests that muscle pain caused by repetitive actions in the wrong posture can be reduced.
Keywords
Convergence; operator; muscle activity; surface EMG; neck goniometer;
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