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Strain analysis of masseter muscle by ultrasound

By Antonio Busato, Giuseppe Balconi, Veronica Vismara, Laura Bertelè, Giovanni Tonti and Gianni Pedrizzetti

Abstract

The masseter muscle represents an area of important functional interest. The present study aims to verify the feasibility of ultrasound imaging for quantifying the muscular deformation pattern in the masseter. Fifteen consecutive subjects were enrolled and underwent to masseter ultrasound under a repeatable protocol. Acquisitions were performed during teeth clenching in natural conditions and after the insertion of a medical device that alters the distance between the dental arches. Acquisitions were repeated\ud in 3 different days. Results showed that masseter deformation is not uniform within the muscle. The same strain pattern repeats in the different acquisitions of the same patient and it is modified after the introduction of the medical device. This was supported by quantitative comparisons in the deep portion of the muscle (standard deviation on the three measures: 3% normal conditions, 2% with medical device) showing a systematic reduction with prosthesis (30% on average). This study demonstrated that masseter strain analysis is a repeatable and sensitive tool for the study of functional analysis of the masticatory organ. This opens new technical perspectives for the diagnosis and therapy of dysfunctional pathologies of the masticatory organ

Topics: Masseter Muscle, Strain Imaging, Skeletal Muscle Ultrasound
Year: 2015
OAI identifier: oai:arts.units.it:11368/2880616
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