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2017 Fiscal Year Final Research Report

Association of cortical shape of the mandible on panoramic radiographs with mandibular trabecular bone structure in Japanese adults

Research Project

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Project/Area Number 15K20394
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Pathobiological dentistry/Dental radiology
Research InstitutionMatsumoto Dental University

Principal Investigator

SUGINO Noriyuki  松本歯科大学, 歯学部, 講師 (10460445)

Project Period (FY) 2015-04-01 – 2018-03-31
Keywords骨粗鬆症 / 顎骨海綿骨 / パノラマX線写真 / 歯科用コーンビームCT
Outline of Final Research Achievements

Number of teeth tended to be associated with cortical shape of the mandible on panoramic radiographs. There was no significant differences in the whole bone volume among 3 cortical shapes (P=0.093). Subjects with severely eroded cortex had significantly larger trabecular bone volume (P=0.115) and fractal dimension (P=0.09) than those with normal and moderately eroded cortices. Trabecular bone density tended to be larger in subject with eroded cortex than the others (P=0.085). However, trabecular bone density increased with age (r=0.26, P=0.042). In this study, trabecular bone of the basal portion of the mandible increased with age, although cortical bone decreased. These results suggested that trabecular bone density and complexity of the mandible may increase with the progression of cortical bone porosity in the elderly.

Free Research Field

歯科放射線学

URL: 

Published: 2019-03-29  

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