An experimental study on mandibular movement and osteoporosis.
In order to clarify the relationship between mandibular movement and osteoporosis, the authors secured the temporo-mandibular joints of 8-week-old rats to immobilize their jaws; then conducted histologic studies chronologically, up to the fifth week. After three weeks, an expansion of the marrow cavity and a reduction of the trabecular were observed in the mandibular process and mandibular fossa. During the fifth week, an osteoporosis-like state was clearly observed. Further, an irregularity in the form of mandibular process was recognized, as well as a remarkable disturbance caused by cartilaginous ossification of the articular cartilage of the condyle.
Shimahara
M
M
Department of Oral Surgery, Osaka Medical College, Japan.
Ono
K
K
Hashiguchi
N
N
Yoshida
Y
Y
Kono
K
K
Dote
T
T
D000818:Animals; D005260:Female; D005774:Gastrostomy; D008334:Mandible / Q000473:pathology / Q000502:physiology*; D009068:Movement; D010024:Osteoporosis / Q000209:etiology*; D051381:Rats; D011919:Rats, Inbred Strains; D013704:Temporomandibular Joint / Q000502:physiology