Biomaterial Database

Effects of several temporomandibular disorders on the stress distributions of temporomandibular joint: a finite element analysis. 2016

Zhan Liu, and Yingli Qian, and Yuanli Zhang, and Yubo Fan

a Provincial Key Laboratory of Biomechanical Engineering , Sichuan University , Chengdu , Sichuan , P.R. China.

The aim of this study was to evaluate stress distributions in the temporomandibular joints (TMJs) with temporomandibular disorders (TMDs) for comparison with healthy TMJs. A model of mandible and normal TMJs was developed according to CT images. The interfaces between the discs and the articular cartilages were treated as contact elements. Nonlinear cable elements were used to simulate disc attachments. Based on this model, seven models of various TMDs were established. The maximum stresses of the discs with anterior, posterior, medial and lateral disc displacement (ADD, PDD, MDD and LDD) were 12.09, 9.33, 10.71 and 6.07 times magnitude of the identically normal disc, respectively. The maximum stresses of the posterior articular eminences in ADD, PDD, MDD, LDD, relaxation of posterior attachments and disc perforation models were 21, 59, 46, 21, 13 and 15 times greater than the normal model, respectively. TMDs could cause increased stresses in the discs and posterior articular eminences.

UI	MeSH Term	Description	Entries
D008334	Mandible	The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth.	Mylohyoid Groove,Mylohyoid Ridge,Groove, Mylohyoid,Grooves, Mylohyoid,Mandibles,Mylohyoid Grooves,Mylohyoid Ridges,Ridge, Mylohyoid,Ridges, Mylohyoid
D008953	Models, Anatomic	Three-dimensional representation to show anatomic structures. Models may be used in place of intact animals or organisms for teaching, practice, and study.	Anatomic Models,Models, Surgical,Moulages,Models, Anatomical,Anatomic Model,Anatomical Model,Anatomical Models,Model, Anatomic,Model, Anatomical,Model, Surgical,Moulage,Surgical Model,Surgical Models
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013314	Stress, Mechanical	A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.	Mechanical Stress,Mechanical Stresses,Stresses, Mechanical
D013704	Temporomandibular Joint	An articulation between the condyle of the mandible and the articular tubercle of the temporal bone.	TMJ,Joint, Temporomandibular,Joints, Temporomandibular,Temporomandibular Joints
D013705	Temporomandibular Joint Disorders	A variety of conditions affecting the anatomic and functional characteristics of the temporomandibular joint. Factors contributing to the complexity of temporomandibular diseases are its relation to dentition and mastication and the symptomatic effects in other areas which account for referred pain to the joint and the difficulties in applying traditional diagnostic procedures to temporomandibular joint pathology where tissue is rarely obtained and x-rays are often inadequate or nonspecific. Common diseases are developmental abnormalities, trauma, subluxation, luxation, arthritis, and neoplasia. (From Thoma's Oral Pathology, 6th ed, pp577-600)	TMJ Disorders,TMJ Diseases,Temporomandibular Disorders,Temporomandibular Joint Diseases,Disease, TMJ,Disease, Temporomandibular Joint,Diseases, TMJ,Diseases, Temporomandibular Joint,Disorder, TMJ,Disorder, Temporomandibular,Disorder, Temporomandibular Joint,Disorders, TMJ,Disorders, Temporomandibular,Disorders, Temporomandibular Joint,Joint Disease, Temporomandibular,Joint Diseases, Temporomandibular,Joint Disorder, Temporomandibular,Joint Disorders, Temporomandibular,TMJ Disease,TMJ Disorder,Temporomandibular Disorder,Temporomandibular Joint Disease,Temporomandibular Joint Disorder
D013718	Tensile Strength	The maximum stress a material subjected to a stretching load can withstand without tearing. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p2001)	Strength, Tensile,Strengths, Tensile,Tensile Strengths
D019224	Temporomandibular Joint Disc	A plate of fibrous tissue that divides the temporomandibular joint into an upper and lower cavity. The disc is attached to the articular capsule and moves forward with the condyle in free opening and protrusion. (Boucher's Clinical Dental Terminology, 4th ed, p92)	Articular Disk, Temporomandibular,Disk, Temporomandibular Joint,Temporomandibular Joint Disk,Articular Disc, Temporomandibular,Articular Discs, Temporomandibular,Articular Disks, Temporomandibular,Disc, Temporomandibular Articular,Disc, Temporomandibular Joint,Discs, Temporomandibular Articular,Discs, Temporomandibular Joint,Disk, Temporomandibular Articular,Disks, Temporomandibular Articular,Disks, Temporomandibular Joint,Joint Disc, Temporomandibular,Joint Discs, Temporomandibular,Joint Disk, Temporomandibular,Joint Disks, Temporomandibular,Temporomandibular Articular Disc,Temporomandibular Articular Discs,Temporomandibular Articular Disk,Temporomandibular Articular Disks,Temporomandibular Joint Discs,Temporomandibular Joint Disks
D019245	Compressive Strength	The maximum compression a material can withstand without failure. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p427)	Compressive Strengths,Strength, Compressive,Strengths, Compressive
D020342	Finite Element Analysis	A computer based method of simulating or analyzing the behavior of structures or components.	Analysis, Finite Element,Analyses, Finite Element,Element Analyses, Finite,Element Analysis, Finite,Finite Element Analyses