TY - JOUR
AU - Hattori, Yoshinori
AB - ORIGINAL RESEARCH Contribution of Each Masticatory Muscle to the Bite Force Determined by MRI Using a Novel Metal-Free Bite Force Gauge and an Index of Total Muscle Activity 1 1 Minoru Takahashi, DDS, PhD, Satoshi Yamaguchi, DDS, PhD, * 1 1,2 Tsuyoshi Fujii, DDS, Makoto Watanabe, DDS, PhD, and Yoshinori Hattori, DDS, PhD Purpose: To develop a metal-free bite force gauge that can monitor the bite force in a strong magnetic field and to analyze the correlations between bite-force and total T2 shift of the mastication muscles. Materials and Methods: The gauge used a micro-pressure sensor made of optical fiber. Ten subjects performed a 60-s isometric bite task at 40% of maximum clenching in various occlusal support conditions (intact dentition, right molar loss, or left molar loss). Spin-echo images were taken with a 1.5 Tesla scanner before and immediately after the task to correlate the bite force with the mean voxel count, mean shift in transverse relaxation time (DT2), and total T2 shift of each masticatory muscle. Results: Measurements of total T2 shift identified significant correlations between the bite force and activities of the superficial layer of the bilateral masseter muscle, regardless of the occlusion condition (intact dentition: left, 
TI - Contribution of each masticatory muscle to the bite force determined by MRI using a novel metal‐free bite force gauge and an index of total muscle activity
JF - Journal of Magnetic Resonance Imaging
DO - 10.1002/jmri.25223
DA - 2016-10-01
UR - https://www.deepdyve.com/lp/wiley/contribution-of-each-masticatory-muscle-to-the-bite-force-determined-LEneI34wAn
SP - 804
EP - 813
VL - 44
IS - 4
DP - DeepDyve
ER -