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Calcifications of the disc of the temporomandibular joint
Author(s) -
Jibiki Masato,
Shimoda Shinji,
Nakagawa Yoichi,
Kawasaki Kenzo,
Asada Koichi,
Ishibashi Katsunori
Publication year - 1999
Publication title -
journal of oral pathology and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 83
eISSN - 1600-0714
pISSN - 0904-2512
DOI - 10.1111/j.1600-0714.1999.tb02113.x
Subject(s) - calcification , temporomandibular joint , ossification , anatomy , chondrocalcinosis , cadaver , medicine , radiography , perforation , degeneration (medical) , pathology , materials science , osteoarthritis , radiology , alternative medicine , metallurgy , punching
Calcified lesions of the temporomandibular joint discs obtained from 135 human cadavers were studied. Calcifications were observed in 92 of 250 discs by soft x‐ray radiography. Studies by light and electron microscopy and x‐ray diffraction revealed that there were two different types of calcification in the discs: apatite crystal deposition with or without ossification, and calcium pyrophosphate dehydrate (CPPD) crystal deposition. Calcifications were recognized more frequently posteriorly than anteriorly, and were related to disc perforation. The results of this investigation suggest that disc degeneration, which may occur as a result of aging or mechanical stress, causes calcifications.