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首页> 外文期刊>Archives of Oral Biology >Soft diet causes greater alveolar osteopenia in the mandible than in the maxilla
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Soft diet causes greater alveolar osteopenia in the mandible than in the maxilla

机译：饮食不当会导致下颌骨的牙槽骨骨质疏松症比上颌骨更大

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摘要

Objective: To investigate changes in the bony microstructure of the upper and lower alveolar bone during masticatory loading induced by soft diet feeding in growing rats. Design: Three-week-old male Wistar rats were randomly divided into two groups. Rats were fed with either pellets [control group (n = 6)] or a soft diet [experimental group (n = 6)] for nine weeks. 3D-microstructure of the alveolar bone of the first molar region (M1) was examined by micro-CT analysis. Results: Micro-CT images showed increased marrow spaces of the inter-radicular alveolar bone around the rat mandibular M1 in the experimental group compared with that in the control group. The bone volume/tissue volume ratio, trabecular thickness, trabecular number, mean intercept length, trabecular width and trabecular star volume for the mandibular M1 inter-radicular alveolar bone were lower in the experimental group than in the control group. Marrow space star volume was increased in the experimental group compared with the control group. Conclusions: These results suggest that alveolar osteopenia is more extensive in the mandible than the maxilla in rats that experience low masticatory loading during growth.
机译：目的：研究软饮食喂养对成年大鼠咀嚼负荷过程中上，下牙槽骨骨微结构的变化。设计：将三周大的雄性Wistar大鼠随机分为两组。给大鼠喂食小丸[对照组（n = 6）]或软饮食[实验组（n = 6）]九周。通过微CT分析检查了第一磨牙区（M1）的牙槽骨的3D微观结构。结果：显微CT图像显示，与对照组相比，实验组大鼠下颌M1周围的神经根间牙槽骨的骨髓间隙增加。实验组下颌M1根尖牙槽骨的骨体积/组织体积比，骨小梁厚度，骨小梁数目，平均截距长度，骨小梁宽度和骨小梁星形体积均低于对照组。与对照组相比，实验组的骨髓空间星体积增加。结论：这些结果表明，在生长过程中咀嚼负荷低的大鼠中，下颌骨中的肺泡骨质减少比上颌骨更广泛。

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