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J Dent Res 29(3): 358-363, 1950
© 1950 International and American Associations for Dental Research
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THE EFFECT OF X-RAY IRRADIATION ON THE DEVELOPMENT OF THE MANDIBULAR JOINT OF THE MOUSE

M. S. BURSTONE D.D.S., M.A.1

1 Department of Oral Pathology, Washington University School of Dentistry, St. Louis, Mo.

X-ray irradiation of the mandibular joint produces a marked inhibition in the process of ossification.

Irradiation of the mandibular condyle of the mouse with 1,500, 3,000 and 5,000 r results in damage to the intermediate and hypertrophic zones with a subsequent marrow aplasia and fibrosis.

The cranial portion of the joint and the interarticular disc are relatively radioresistant.

The growth potential may be restored to some extent approximately six weeks following irradiation (5,000 r).

Sixty-two days following irradiation (5,000 r) there is a marked increase in the cellular activity of the resting zone and the intermediate zone.

Submitted on September 12, 1949






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