Computational characterization of the porous‐fibrous behavior of the soft tissues in the temporomandibular joint

Abstract

The prevalence and severity of temporomandibular joint (TMJ) disorders have led to growing research interest in the development of new biomaterials and medical devices for TMJ implant designs. In computational designs, however, the time and stretch direction dependences of the TMJ soft tissues behavior are not considered and they are frequently based on measurements taken from non-human species or from joints that differ markedly from the human TMJ. The aim of this study was to

The influence of maxillary incisor angles on the stress distributions of temporomandibular joints under incisal biting

“…The biomechanical environment in TMJs was impacted by many factors because of the complex working conditions. Abnormal stress distributions could cause temporomandibular disorders, 16,17 harmful for the patients' physical and mental health. The angle of the maxillary incisors was related to the direction of the occlusal forces and the mandible position during biting, especially incisal biting.…”

“…However, the disc of subtype III sustained greater tensile stress on the intermediate zone and posterior band, inconsistent with another study with the results of the tensile stress on the posterior band less than that on the anterior band. 29 The disc, a biconcave, elliptical and fibrocartilaginous tissue, 16 is comprised of strong, interwoven collagen bundles, predominately in the anteroposterior direction. 40 The physiological structure, thickness, fiber orientation and tissue are different among the anterior, intermediate and posterior bands, so the biomechanical characters of the three bands should be different.…”

“…[9][10][11] Therefore, the biomechanical environment within TMJ is influenced by many factors, such as maxillofacial morphology, biting conditions and mandibular motions. 9,11,12 Mandibular deformities would cause abnormal stress distributions in the TMJs, 11,[13][14][15] related to temporomandibular disorders (TMD), 16,17 and could be improved by orthognathic surgeries. [18][19][20] Not only the mandibular morphology, but also the occlusion affected the TMJs, especially for the incisal morphology.…”