Sex-related Differences in Cortical and Trabecular Bone Quantities at the Mandibular Molar
Sex-related Differences in Cortical and Trabecular Bone Quantities at the Mandibular Molar
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DOI：
10.2485/jhtb.23.267
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发表时间：
2014-04-01
影响因子：
0.4
通讯作者：
Sato, Hironobu
中科院分区：
文献类型：
--
作者：
Matsuura, Takashi;Mizumachi, Emiri;Sato, Hironobu
下颌第一磨牙的性别、年龄和牙齿相关的皮质骨和骨小梁数量趋势存在不确定性，下颌第一磨牙是缺失磨牙的部分无牙患者的常见种植体接受部位。我们通过计算机断层扫描对一侧缺失第一磨牙的患者的下颌第一磨牙进行了评估。对82名受试者进行了评估。使用计算机断层扫描图像重新格式化软件对横截面图像上的皮质骨和骨小梁进行定量，包括有和没有第一磨牙的两侧下颌第一磨牙的部位。评估骨量与年龄的关系以及有无第一磨牙的两侧之间的关系。根据性别和两侧进行骨量比较。在两种性别和两侧，皮质骨和松质骨数量之间存在很大的个体间差异。虽然没有性别相关或年龄相关的骨小梁数量的差异存在，男性表现出更大的皮质骨数量比女性，女性，而不是男性，表现出与年龄相关的皮质骨数量下降。双侧骨量对称仅见于女性。皮质骨数量没有显着差异，两侧在任何性别，而骨小梁数量不同，没有第一磨牙的一方有更大的价值比它在女性，在较小的程度上，在男性。计算机断层扫描分析明确测量皮质骨和松质骨的数量，并揭示了他们的性别相关的差异，在临床情况下，特别是在这项研究中设计的。
Uncertainty exists regarding sex-, age- and tooth-related cortical and trabecular bone quantity tendencies at the mandibular first molar, a frequent implant recipient site in partially edentulous patients with missing molars. We assessed these tendencies for the mandibular first molar by using computed tomography in patients missing the first molar on one side. Eighty-two subjects were assessed. Cortical and trabecular bones were quantified using computed tomography image reformatting software on a cross-sectional image, including the site of the mandibular first molars on sides with and without the first molar. Bone quantity associations with age and between the sides with and without the first molar were evaluated. Bone quantities were compared according to sex and between the two sides. Great interindividual variations between cortical and trabecular bone quantities were seen in both sexes and on the two sides. Although no sex-related or age-related difference in trabecular bone quantity existed, men demonstrated a greater cortical bone quantity than women; women, but not men, exhibited an age-related decline in cortical bone quantity. Bilateral symmetry of both bone quantities appeared only in women. Cortical bone quantity did not differ between the two sides in either sex, while trabecular bone quantity differed; the side without the first molar had greater values than that with it in women and, to a lesser extent, in men. A computed tomography analysis distinctively measured cortical and trabecular bone quantities and unveiled their sex-related differences in a clinical situation, as specifically designed in this study.