+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Pathohistological study on changes observed in the temporomandibular joint after experimental mutilation and shortening of the mandibular process with special reference to the changes under abnormal mandibular movement



Pathohistological study on changes observed in the temporomandibular joint after experimental mutilation and shortening of the mandibular process with special reference to the changes under abnormal mandibular movement



Bulletin of the Osaka Medical College 36(1-2): 79-92



Abnormal mandibular movement continues to occur when fracture of the mandibular process have resulted in abnormal occlusion or abnormal mandibular movement. However, what changes might occur in the temporomandibular joint have not yet been fully clarified. In the present study, a fracture of the condylar process was experimentally induced in rats, and the resulting bone ends were wired in place. That is to say, the resulting displacement was fixed permanently. Histological studies were made on the changes of the temporomandibular joint at the postoperative third month in those rats which demonstrated abnormal occlusion and abnormal mandibular movement. Lack of uniformity of the fibrous layer and a shallowing of the mandibular fossa; proliferation of the fibrous connective tissue and reduction in size of the superior and inferior articular cavity; tylosis and irregularity in the articular disc; deformation and tylosis of the fibrous layer of the articular cartilage, tendency of the layer structure in the articular cartilage to disappear, and some effect on cartilaginous ossification in the condyle; flattening of the condyle and thinning of the layer structure in the condylar articular cartilage in the unaffected side of the mandibular joint. These changes were observed to be more marked as the displacement and occlusal abnormality of the mandible intensified, showing no morphological adaptation of the temporomandibular joint.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 007634750

Download citation: RISBibTeXText

PMID: 2135647


Related references

Mandibular movement, temporomandibular joint sounds, and the mandibular dysfunction syndrome. Journal of Physiology 257(1): 30p-31p, 1976

Theory and practice of the mandibular position with special reference to the temporomandibular joint. Zwr 84(12): 569-571, 1975

Grafts of autogenous coronoid process to reconstruct the mandibular condyle in children with unilateral ankylosis of the temporomandibular joint: long-term effects on mandibular growth. British Journal of Oral and Maxillofacial Surgery 56(2): 107-112, 2018

Temporomandibular joint positional change accompanies post-surgical mandibular relapse-A long-term retrospective study among patients who underwent mandibular advancement. Orthodontics and Craniofacial Research 21(1): 33-40, 2018

Changes in temporomandibular joint after mandibular subcondylar osteotomy: an experimental study in rats. Journal of Oral and Maxillofacial Surgery 51(11): 1221-1234, 1993

Experimental studies of the healing process in experimental fractures (with special reference to injuries of the mandibular condyle). Minerva Stomatologica 18(1): 1-6, 1969

Mandibular coronoid process locking a prospective study of frequency and association with internal derangement of the temporomandibular joint. Oral Surgery Oral Medicine Oral Pathology 63(3): 275-279, 1987

Temporomandibular joint disease: abnormal mandibular function as basis. A.M.A. Archives of Surgery 69(5): 635-645, 1954

Evaluation of Temporomandibular Joint Movement After Mandibular Reconstruction. Journal of Craniofacial Surgery 30(1): 154-157, 2019

Distribution and functional significance of chondrocytes appearing in the temporomandibular discs of mammals. 3. Changes of the temporo-mandibular joint in the rat following the creation of experimental malocclusion: with special attention to changes in the disc. Shika Gakuho. Dental Science Reports 71(5): 1337-1348, 1971

The role of trauma on temporomandibular joint ankylosis and mandibular growth retardation: an experimental study. Journal of Craniofacial Surgery 15(2): 274-82; Discussion 282, 2004

Disk position and temporomandibular joint structure associated with mandibular setback in mandibular asymmetry patients. Angle Orthodontist 79(3): 521-527, 2009

Simultaneous mandibular distraction and arthroplasty in a patient with temporomandibular joint ankylosis and mandibular hypoplasia. Journal of Oral and Maxillofacial Surgery 57(3): 328-333, 1999

MRI of the temporo-mandibular joint: which sequence is best suited to assess the cortical bone of the mandibular condyle? A cadaveric study using micro-CT as the standard of reference. European Radiology 22(7): 1579-1585, 2012

The transverse movement of the tempero-mandibular joint (translation movement) of the dog, with reference to dysplasia of this joint in Dachshunds. Anatomia Histologia Embryologia 25(3): 145-149, 1996