[Development of a functional mandibular model].
This study was conducted to establish a functional mandibular biomechanical model for use in the follow-up biomechanical study of the integrated and fractured mandible. The integrated and dry human mandible was used, and the corresponding maxilla and cranial base was duplicated by resin and plaster. 2-mm silicon rubber was used for simulation of the temporomandibular joint (TMJ) disc. A simulated TMJ and physiological mandibular model was developed by four pairs of muscular loadings (Masseter= 180 N, Temporalis = 190 N, Medial Pterygoideus = 120 N, Lateral Pterygoideus = 40 N) in each muscular center, and the functional loading corresponding with physiological condition was reflected and simulated more realistically when compared with that of the previously reported mandibular models which were developed by occlusion loading or by only one pair of muscles loading. In summary, we have established a functional mandibular model which can be used to analyze the biomechanical behavior in various functional conditions.
Department of Oral and Maxillofacial Surgery,West China College of Stomatology, Sichuan University, Chengdu 610041, China.
Hang
H
Wang
Mengshi
M
Chen
Weidong
W
Tian
Wei
W
Tang
D001696:Biomechanical Phenomena; D006801:Humans; D008334:Mandible / Q000502:physiology*; D008406:Masseter Muscle / Q000033:anatomy & histology / Q000502:physiology; D008410:Masticatory Muscles / Q000502:physiology*; D008954:Models, Biological; D011626:Pterygoid Muscles / Q000033:anatomy & histology / Q000502:physiology; D013314:Stress, Mechanical; D013703:Temporal Muscle / Q000033:anatomy & histology / Q000502:physiology; D013704:Temporomandibular Joint / Q000502:physiology*