Morphological comparison of artificial teeth position utilising denture space in glossectomy patients.
Morphological comparison of artificial teeth position utilising denture space in glossectomy patients.
复制标题
舌切除患者利用义齿间隙的人造牙位置的形态学比较。
DOI：
10.1111/ger.12450
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发表时间：
2020
期刊：
影响因子：
2
通讯作者：
Taniguchi H.
中科院分区：
文献类型：
--
作者：
Awuti S;Sumita YI;Hattori M;Yoshi S;Kelimu S;Ohbayashi N;Kurabayashi T;Taniguchi H.
目的本研究旨在利用三维技术从人工牙定位的角度比较无牙舌切除患者与对照组的义齿间隙。背景已知舌切除或重建可能会影响义齿间隙的形状。然而，这些患者的人造牙定位细节仍不清楚。 材料和方法 6 名年龄 73-83 岁的无牙舌切除患者和 6 名年龄 74-85 岁的正常参与者参与了这项研究。压电描记法用于阐明义齿间隙的特征。为了可视化，使用锥形束计算机断层扫描扫描压电记录，并将数据转换为立体光刻格式。然后构建了压力记录的三维图像。再现下颌咬合面的颊舌宽度，并设置咬合面的弧线以模拟义齿的位置。记录并测量左右两侧咬合面的最大弦长。计算左右两侧大弦与小弦的差异和比率，并使用Mann-WhitneyUtest进行统计分析。结果对照组与舌切除患者的左右差异和比率有显着差异（P˂ .01）。舌切除患者的差异和比例均高于对照组。结论舌切除患者左右咬合面上的模拟义齿位置不对称。
ObjectiveThis study aimed to compare the denture space of edentulous glossectomy patients with that of a control group from the perspective of artificial teeth positioning by using three‐dimensional techniques.BackgroundIt is known that the shape of the denture space may be affected by tongue resection or reconstruction. However, the details of artificial teeth positioning in these patients remain unclear.Materials and methodsSix edentulous glossectomy patients aged 73‐83 years and six normal participants aged 74‐85 years participated in the study. Piezography was used to elucidate the characteristics of the denture space. For visualisation, piezographic records were scanned using cone beam computed tomography and the data were converted into stereolithographic format. Three‐dimensional images of piezographic records were then constructed. Bucco‐lingual widths of the mandibular occlusal surface were reproduced, and the camber line of the occlusal surface was set so as to simulate the position of the artificial teeth. The maximum chord of the occlusal surface on the left and right sides was recorded and measured. The discrepancy and ratio of the larger chord to the smaller chord between the right and left sides was calculated and subjected to statistical analyses using the Mann‐WhitneyUtest.ResultsThere were significant differences in discrepancy and ratio between the left and right in the control group and the glossectomy patients (P˂ .01). The glossectomy patients showed a greater discrepancy and ratio than the control group.ConclusionsThe simulated artificial teeth positions on the occlusal surface between the right and left side were asymmetric in glossectomy patients.