Comparative study between various growth pattern of masseter muscles using ultrasound imaging system
Journal Title: MedPulse -International Medical Journal - Year 2015, Vol 2, Issue 2
Abstract
Introduction: Among the masticatory muscle, masseter has been shown to have significant relation with bite force magnitude and craniofacial morphology. In adults, correlation has been found between facial dimension and masseter muscle thickness. Based on cephalometric values the dentofacial growth pattern has been divided into three namely, average, vertical and horizontal. To determine the pattern of relation of the facial skeleton and muscles the structure of the facial muscles ought to be investigated thoroughly in order to paint an accurate portrait of facial morphology. Aims and objectives: To compare between various growth pattern of masseter muscles using ultrasound imaging system. Materials and Method: The study consisted of 75 subjects undergoing orthodontic treatment in the Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dental Sciences, Sri Ramachandra University. All the subjects were divided in three groups (viz. average, vertical and horizontal growth group) containing 25 patients each. Utrasonagraphy was used to calculate the thickness of masseter muscle. The thickness was measured in relaxed and contracted state on both sides. Results: It was observed that the mean thickness of masseter in average growth group was more as compared to vertical growth group and the difference was also statistically significant. When the thickness of masseter was compared between average growth group and horizontal growth group, it was observe that thickness in average group was more as compared to horizontal group. And the difference was also statistically significant. The mean thickness of masseter muscle in horizontal growth group was more as compared to vertical growth group and the difference was highly significant. Conclusion: The thickness of the masseter muscle was greatest in horizontal growth pattern, followed by average growth pattern and vertical growth pattern.
Authors and Affiliations
Gokulakrishnan Periakaruppan, Joe Joseph, P M Venkata Sai, Arun B Chitharanjan
Keywords
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