锥形束CT与曲面断层片在后牙区可用骨高度测量与种植模拟中的临床评价

发布时间：2018-07-07 10:26

本文选题：牙种植 + 上颌骨　；参考：《中国组织工程研究》2017年20期

【摘要】：背景:锥形束CT和曲面断层片是口腔种植术前评估中应用最广泛的两种影像学方法,锥形束CT应用成本高,普及率低,但曲面断层片在二维平面上测量分析误差较大。目的:对比锥形束CT与曲面断层片在上下颌后牙区对可用骨量的测量准确性,并评价种植模拟的临床效果。方法:从复旦大学附属眼耳鼻喉科医院收治的后牙种植患者中选择72例共115颗种植体作为研究对象,分别在术前的锥形束CT和曲面断层片上进行可用牙槽骨高度的测量,测量结果进行统计学分析。并分别在Planmeca Romexis 3.8(锥形束CT)和Cliniview 9.3(曲面断层片)软件中进行种植体模拟植入,比较模拟种植体底部至重要解剖结构的距离和术后实际距离的差异。结果与结论:(1)锥形束CT与曲面断层片对种植区可用骨高度测量值之间的差异有显著性意义(P0.05),上颌测量值之间的差异有非常显著性意义(P0.01);(2)锥形束CT与曲面断层片种植模拟结果与术后实际结果之间的差异有显著性意义(P0.05);(3)曲面断层片模拟种植结果的平均误差和标准差均较锥形束CT偏大;锥形束CT在上颌后牙区模拟种植的平均误差较曲面断层片明显偏小,在下颌差别不大;(4)结果提示,锥形束CT在后牙缺牙区能为可用骨高度提供更为清晰准确的测量,并且在上颌优势更大。锥形束CT与曲面断层片在种植模拟上的准确性还有待提高。在下颌,锥形束CT和曲面断层片模拟种植都有较好的准确性;在上颌锥形束CT比曲面断层片更可靠。
[Abstract]:Background: cone beam CT and curved surface tomography are the two most widely used imaging methods in preoperative assessment of oral implant. The application of conical beam CT is high cost and low popularity, but the measurement error of the surface fault slices on the two-dimensional plane is large. Objective: To compare the measurement of the available bone quantity in the conical beam CT and the surface fault layer in the upper and lower mandibular teeth. The clinical effect of the implant simulation was evaluated. Methods: 72 cases of posterior dental implant patients in Otolaryngological Hospital Affiliated to Fudan University were selected and 115 implants were selected as the research objects. The measurement of the alveolar bone height was carried out on the cone beam CT and the surface fault slices before the operation, and the results were statistically analyzed. Implants were not used in Planmeca Romexis 3.8 (conical bundle CT) and Cliniview 9.3 (surface tomography) software to simulate the difference between the distance from the bottom of the implant to the important anatomical structure and the actual distance after the operation. Results and conclusions: (1) the difference between the measured values of the available bone height available to the planting area by the cone beam CT and the curved surface lamellae Significant significance (P0.05), the difference between the maxillary measurements was significant (P0.01); (2) the difference between the simulation results of the cone beam CT and the curved surface tomography and the actual results after the operation was significant (P0.05); (3) the average error and standard deviation of the simulated implant results were larger than that of the cone beam CT; the conical bundle CT was in the field. The average error of simulated implant in the maxillary posterior teeth area is smaller than that of the surface fault slice, and there is little difference in the mandible. (4) the results suggest that the cone beam CT can provide more clear and accurate measurement for the available bone height in the posterior teeth, and the upper jaw is more advantageous. The accuracy of the cone beam CT and the curved patch in the implant simulation is still to be improved. In mandible, cone beam CT and curved tomographic implants have better accuracy; maxillary cone beam CT is more reliable than curved tomographic slices.
【作者单位】：复旦大学附属眼耳鼻喉科医院口腔科;
【分类号】：R783.6

【参考文献】