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首页> 外文期刊>Clinical oral investigations >Effects of orthodontic treatment on human alveolar bone density distribution
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Effects of orthodontic treatment on human alveolar bone density distribution

机译：正畸治疗对人牙槽骨密度分布的影响

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Objectives: The objective of this study was to examine if non-invasive clinical cone beam computed tomography (CBCT)-based degree of bone mineralization (DBM) measurement can be used to detect the different results from orthodontic treatment between the maxilla and mandible in human patients. Materials and methods: CBCT images were taken before and after orthodontic treatment from 43 patients (19 males and 24 females, 14.36 ± 1.50 years). A histogram of computed tomography (CT) attenuation value, which is equivalent to the DBM, was obtained from the alveolar cortical (AC), trabecular (AT), and enamel (E) regions of each image. Mean, standard deviation (SD), and coefficient of variation (COV) of the CT attenuation values were computed. The regional variations and percentage (%) differences between the E and alveolar regions of the CT attenuation parameters at the maxilla and mandible were analyzed before and after orthodontic treatment. Results: The AC had higher mean and variability (SD and COV) than the AT before and after treatment (p < 0.001). The variability was higher in the mandibular AC than in the maxillar AC (p < 0.01) independent of orthodontic treatment. The percentage (%) difference of variability of CT attenuation values changed for both AT and AC in the maxilla after orthodontic treatment, while that changed for only the AT (p < 0.02), but not for AC, in the mandible (p > 0.16). Conclusions: The alveolar cortical region of the mandible responded differently to orthodontic treatment compared with other alveolar regions. Clinical relevance: The CBCT-based DBM analysis can be used clinically to assess alveolar bone quality changes induced by orthodontic treatment to improve treatment planning and result evaluation.
机译：目的：本研究的目的是检查基于无创临床锥束计算机断层扫描（CBCT）的骨矿化程度（DBM）测量是否可用于检测上颌骨和下颌骨在人中正畸治疗的不同结果耐心。材料和方法：CBCT图像是在正畸治疗之前和之后从43例患者（男19例，女24例，年龄14.36±1.50岁）中拍摄的。从每个图像的肺泡皮质（AC），小梁（AT）和牙釉质（E）区域获得等效于DBM的计算机断层扫描（CT）衰减值的直方图。计算出CT衰减值的平均值，标准偏差（SD）和变异系数（COV）。在正畸治疗之前和之后，分析了上颌和下颌CT衰减参数的E区域和牙槽区域之间的区域变化和百分比（％）差异。结果：AC治疗前后均值和变异性（SD和COV）均高于AT（p <0.001）。与正畸治疗无关，下颌AC的变异性高于上颌AC（p <0.01）。正畸治疗后上颌中AT和AC的CT衰减值变化的百分比差异（％），而下颌中仅AT（p <0.02）而不是AC（p> 0.16）变化）。结论：与其他牙槽区域相比，下颌骨的牙槽皮质区域对正畸治疗的反应不同。临床相关性：基于CBCT的DBM分析可用于临床评估正畸治疗引起的牙槽骨质量变化，从而改善治疗计划和结果评估。

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