title: Trabecular bone ratio of mandible using micro-computed tomography in Korean.
abstract: Cortical bone and trabecular portion play important roles in maintaining the general structure of bone. It has been reported that a decrease in bone mineral density is related with increasing age, sex, and teeth loss. However, most of the studies were done with conventional radiographic analysis. In addition, data from Korean population are rare. The aim of this study was to analyze trabecular pattern of the mandible using micro-computed tomography. Thirty-nine specimens of the mandible were prepared. Specimens were scanned with micro-computed tomography and reconstructed three-dimensionally. Sections were made parallel to the axis of each tooth. Trabecular bone ratio (TBR) was measured. Data were statistically analyzed with 1-way analysis of variance (alpha = 0.05). There was a statistically significant difference of TBR between dentate and edentulous mandibles in the molar region. Trabecular bone ratio of edentulous mandible in males was greater than that in females. Trabecular bone ratio of dentate mandibles reduced regularly with increasing age, whereas that of edentulous mandibles did not. It could be concluded that there were statistically significant differences in TBR according to presence of tooth, sex, and increasing age on specific areas.
authors.affiliation: Division in Anatomy and Developmental Biology, Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea.
authors.forename: Sung-Yoon
authors.initials: SY
authors.lastname: Won
authors.forename: Sung-Hyun
authors.initials: SH
authors.lastname: Kim
authors.forename: Sung-Tae
authors.initials: ST
authors.lastname: Kim
authors.forename: Doo-Jin
authors.initials: DJ
authors.lastname: Paik
authors.forename: Wu-Chul
authors.initials: WC
authors.lastname: Song
authors.forename: Ki-Seok
authors.initials: KS
authors.lastname: Koh
authors.forename: Moon-Kyu
authors.initials: MK
authors.lastname: Chung
authors.forename: Hee-Jin
authors.initials: HJ
authors.lastname: Kim
authors.forename: Kyung-Seok
authors.initials: KS
authors.lastname: Hu
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015519:Bone Density; D002102:Cadaver; D005260:Female; D006801:Humans; D007723:Korea; D008297:Male; D008334:Mandible / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D008875:Middle Aged; D055114:X-Ray Microtomography