上颌前牙区微种植体支抗植入位点的锥形束CT测量研究

发布时间：2018-05-22 18:01

  本文选题：上颌前牙区 + 微种植体支抗　； 参考：《暨南大学》2015年硕士论文

【摘要】：目的:应用CBCT研究上颌前牙区微种植体支抗的植入位点,为临床医生选择相应微种植体支抗的直径和长度,确定植入的角度及最适宜的植入位点提供参考。方法:选取暨南大学附属惠州口腔医院进行CBCT扫描的患者30名,男女各15名,年龄为18~30岁,汉族。扫描完成后数据应用Ez3D2009 version 1.0图像分析软件(VATECH,Korea)进行分析,在重建的三维图像中选取所需要的截面,分别测量上颌1-1间、1-2间、2-3间距上颌牙槽嵴顶2 mm、4 mm、6 mm、8 mm处近远中向根间最小距离、唇腭向牙槽骨厚度、唇腭向牙槽骨密度及唇侧骨皮质厚度。用SPSS 13.0统计软件对测量结果进行分析处理。结果:1、前后两次各测量值之间差异无统计学意义(P0.05)。2、男、女性各测量值之间差异无统计学意义(P0.05)。3、左右两侧各测量值之间差异无统计学意义(P0.05)。4、在上颌前牙区,具有近远中向最小根间距离最大的部位是1-1间距牙槽嵴顶8 mm处(3.54±0.40 mm),最小的部位是1-2间距牙槽嵴顶2 mm处(1.75±0.32 mm)。具有唇腭向牙槽骨厚度最大的部位是1-2间距牙槽嵴顶8 mm处(7.62±0.14 mm),最小的部位是1-1间距牙槽嵴顶2 mm处(5.18±0.17 mm)。具有唇腭向牙槽骨密度最大的部位是1-1间距牙槽嵴顶2 mm处(845.57±96.10 HU),最小的部位是2-3间距牙槽嵴顶8 mm处(601.71±99.38 HU)。具有唇侧骨皮质厚度最大的部位是2-3间距牙槽嵴顶6 mm处(1.23±0.21 mm),最小的部位是1-1之间距牙槽嵴顶2 mm处(0.81±0.24 mm)。结论:1、上颌前牙区近远中向根间最小距离及唇腭向牙槽骨厚度在靠近根尖区时总体呈现增大趋势;唇腭向牙槽骨密度随着离牙槽嵴顶越远,呈减小趋势;除了2-3根间在距离牙槽嵴顶6 mm、8 mm位点唇侧骨皮质厚度呈减小趋势,其余牙根随着离牙槽嵴顶越远,唇侧骨皮质厚度不断增大。2、微种植体支抗植入若从安全性角度考虑,1-2之间根间隙为最窄处,若要在该处植入种植体,应尽量选择小直径种植体(≤1.2 mm)。3、1-1之间根间隙最大,唇腭向牙槽骨密度最大,但骨皮质厚度最小;2-3之间唇腭向牙槽骨密度最小,唇侧骨皮质厚度最大,且在距牙槽嵴顶6 mm水平处以下唇腭向牙槽骨厚度最大,因此本研究提示1-1之间以及2-3之间是最佳植入区域。
[Abstract]:Objective: to study the implant site of microimplant Anchorage in maxillary anterior teeth by CBCT, and to provide a reference for clinicians to select the diameter and length of microimplant Anchorage, to determine the angle of implantation and the most suitable implant site. Methods: thirty patients, 15 males and 15 males, aged 1830 years, were selected from Huizhou Stomatological Hospital affiliated to Jinan University for CBCT scanning. After scanning, the data were analyzed with Ez3D2009 version 1.0 image analysis software, and the required sections were selected in the reconstructed 3D images. The distance between maxillary 1-1 and 1-2 alveolar crest was measured. The distance between the crest of maxillary alveolar crest 2 mm ~ 4 mm ~ 6 mm ~ 8 mm, the thickness of labiopalatine alveolar bone, the bone mineral density of labiopalatine alveolar bone and the thickness of labial cortical bone were measured. The measurement results were analyzed and processed by SPSS 13.0 statistical software. Results there was no significant difference between the two measurements before and after 1: 1. There was no significant difference between the measured values of male and female. There was no significant difference between the measured values on the left and right sides of the maxillary anterior teeth, and there was no significant difference between the measured values on the left and right sides of the maxillary anterior teeth. The largest distance between roots was found to be 3.54 卤0.40 mm at 8mm of alveolar crest and 1.75 卤0.32 mm between 2 mm and 2 mm of alveolar crest. The largest thickness of labiopalatine alveolar bone was 7.62 卤0.14 mm at 8mm top of alveolar crest and 5.18 卤0.17 mm at 2 mm between 1-1 interval of alveolar crest. The maximum BMD of labiopalatine alveolar crest was 8455.57 卤96.10 HUU at the top of alveolar crest with 1-1 interval, and the smallest position was 601.71 卤99.38 HUU at 8mm between the top of alveolar crest and 2-3 mm apart from the crest of alveolar crest. The site with the largest thickness of the labial cortex was 1.23 卤0.21 mm at 6 mm of alveolar crest and 0.81 卤0.24 mm between 1-1 and 2 mm of alveolar crest. Conclusion the minimum distance between the maxillary anterior teeth and the thickness of the labiopalatine alveolar bone increases with the distance between the maxillary anterior teeth and the apical region, and the bone mineral density of the labiopalatine alveolar region decreases with the distance from the alveolar crest to the top of the alveolar crest. Except that the thickness of the labial cortex between 2-3 roots was decreased at a distance of 6 mm to 8 mm from the top of the alveolar crest, the other roots were further away from the top of the alveolar crest. The thickness of the labial cortex is increasing. If the root gap between 1 and 2 is the narrowest place in terms of safety, small diameter implants (鈮，

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