Relative contributions of occlusion, maximum bite force, and chewing cycle kinematics to masticatory performance

咀嚼力 咬合力商 闭塞 口腔正畸科 牙科 咀嚼 运动学 牙合 医学 物理 外科 经典力学
作者
Casey R. Lepley,Gaylord S. Throckmorton,Richard F. Ceen,Peter H. Buschang
出处
期刊:American Journal of Orthodontics and Dentofacial Orthopedics [Elsevier]
卷期号:139 (5): 606-613 被引量:106
标识
DOI:10.1016/j.ajodo.2009.07.025
摘要

Introduction The purpose of this study was to explore the contributions of occlusion, maximum bite force, and chewing cycle kinematics to masticatory performance. Methods A prospective cross-sectional study was performed on 30 subjects with Class I occlusion. Masticatory performance was measured with the test food Cuttersil (Heraeus Kulzer, South Bend, Ind) and the fractional-sieve technique. Blu-Mousse (Parkell Biomaterials, Farmingdale, NY) bite registrations were used to measure occlusal contact areas. The American Board of Orthodontics occlusal discrepancies were measured on the subjects’ dental models. Maximum bite forces were recorded with a custom transducer, and 3-dimensional chewing cycle kinematics were tracked with an opto-electric computer system and Optotrak software (Northern Digital, Waterloo, Ontario, Canada). Results Masticatory performance was most closely correlated with occlusal contact area, indicating larger contact areas in subjects with better performance. Occlusal contact area and occlusal discrepancies were also related to bite force and chewing cycle kinematics. Maximum bite force was positively related with masticatory performance. Conclusions Although masticatory performance is related, both directly and indirectly, to a number of morphologic and functional factors, it is most closely related to occlusal factors.
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