翼上颌区穿翼种植体入路分析

Analysis of implant approach in pterygomaxillary region

目的基于对103例锥体束电子计算机断层扫描(CBCT)影像数据进行分析,观察穿翼种植体合适的植体长度和在三维方向上的最佳植入角度。方法选取103例上颌后牙区骨萎缩患者,对每位患者的CBCT影像进行个性化解剖测量,随后选择合适长度的种植体模拟植入,分别测量相对于眶耳平面种植体在矢状方向和冠状方向的角度。结果基于此次分析,翼上颌区种植体以选择≥15 mm的种植体为最佳。相对于眶耳平面种植体矢状面的平均植入角度为(61.57±4.21)°;冠状面的平均植入角度为(80.68±2.89)°。结论充分利用翼上颌区的骨量,使种植体获得良好的初期稳定性,在行翼上颌区种植手术时,尽量选择植入长度≥15mm的种植体;相对于眶耳平面,种植体在矢状面的植入角度约为61°,冠状面的植入角度约为80°。

Objective Based on analysis of 103 cases of implant approach in pterygomaxillary region on cone beam computed tomography image,the aim of this study was to select the appropriate length of the pterygomaxillaryimplant and to define the three-dimensional angulation of the pterygomaxillary area in which pterygoid implants should ideally be placed.Methods One hundred and three cone beam computed tomography files of atrophic posterior maxillae were evaluated.Implant placement was guided by the individual anatomy of each patient.The appropriate length of the implant was chosen.The angle of the implant relative to the Frankfort plane in theanteroposterior axis and buccopalatal axis was measured respectively.Results Based on this analysis,it should be choosen an implant with a length at least 15 mm in this area.The mean implant angulation was(61.57±4.21)°in the anteroposterior axis and(80.68±2.89)°in the buccopalatal axis,relative to the Frankfort plane.Conclusion Based on the results of this study,to take advantage of the quantity and quality of the bone in pterygomaxillary region,it should be choosen an implant with a length at least 15 mm in this area.The implant angulation is about 61°in the anteroposterior axis and 80°in the buccopalatal axis,relative to the Frankfort plane.