Myosin heavy chain isoform composition of human masseter muscle from subjects with different mandibular plane angles.
Donna Lim, Felice Beitzel, Gordon Lynch, Michael G Woods
Aust Orthod J | Published : 2006
AIM: To investigate the presence of myosin heavy chain isoforms in human masseter muscle and to describe any differences in orthognathic surgery patients with different mandibular plane angles. METHOD: Biopsies were obtained from the anterior border of the superficial masseter muscle in 18 patients undergoing various orthognathic procedures. Myosin heavy chain isoforms were isolated and analysed by SDS-PAGE gel electrophoresis. Steiner's mandibular plane angles were measured from pretreatment lateral cephalometric radiographs and used to classify the vertical dimension of each subject. RESULTS: Despite the fact that there was wide individual variation, there appeared to be no direct associat..View full abstract