Changes in the temporomandibular joint caused by the vertical facial pattern. Study on an experimental model

J Craniomaxillofac Surg. 1994 Dec;22(6):361-70. doi: 10.1016/s1010-5182(05)80118-0.

Abstract

An experimental model reproducing open bite or verticalized facial pattern was used to study its effect on the temporomandibular joints. 140 Wistar rats were used, divided into 3 groups: bilateral resection of the masseteric muscle, simulated muscular resection and control group. A series of radiological, morphological and histological tests were analyzed. The posterior rotation of the jaw caused by muscular resection although not producing a degenerative effect, did produce specific articular changes in the temporomandibular joint components.

MeSH terms

  • Animals
  • Atrophy
  • Cartilage, Articular / pathology
  • Cephalometry
  • Disease Models, Animal
  • Face*
  • Hypertrophy
  • Incisor / pathology
  • Malocclusion / complications*
  • Mandible / pathology
  • Mandibular Condyle / pathology
  • Masseter Muscle / pathology
  • Masseter Muscle / surgery
  • Maxillofacial Development
  • Palate / pathology
  • Rats
  • Rats, Wistar
  • Rotation
  • Temporal Bone / pathology
  • Temporomandibular Joint / growth & development
  • Temporomandibular Joint / pathology*
  • Temporomandibular Joint Disorders / etiology*
  • Vertical Dimension*
  • Zygoma / pathology