Condylar movement in subjects with sound and reducible derangement of temporomandibular joint

DOI 20 Citations 28 References

Bibliographic Information

Other Title
  • 復位性顎関節内障患者と顎機能正常者の下顎頭運動に関する研究

Search this article

Abstract

Mandibular opening movement is composed of a combination of condylar rotation and translation. The purpose of this investigation was to study the relationship between condylar rotation and translation during opening movements in order to clarify whether these two moving components are available for diagnosis of temporomandibular (TM) joint disorder.<br>Twenty seven subjects without signs or symptoms of TM joint disorders (normal group) and 20 subjects with at least unilateral clicking joint (TMD group) were examind regarding with the amount of condylar rotation and translation and the relationship between these two moving components utilizing computerized axiographs. Anterior complete disk displacement with reduction was confirmed by magnetic resonance imaging. The amount of condylar translation of the TMD group was longer than that of the normal group in the opening movement, while the amount of the condylar rotation was not significantly different in these two groups. It was suggested that the excessive translation in the TMD group resulted from looseness of the capsule and lateral ligament. Furthermore, results indicated a highly linear relationship between condylar rotation and translation except for the terminal end of the opening movement in the normal group. The final stage of the opening movement in the normal group mostly consisted of condylar rotation. On the other hand, the opening movement in the TMD group started with rotation movement predominance, and finished by the same ratio of rotation and translation movements.<br>It was concluded that the examination of the relationship between condylar rotation and translation can be useful for a diagnosis of TM joint dysfunction including loose ligament.

Journal

Citations (20)*help

See more

References(28)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top