Rodríguez X, Lucas-Taulé E, Elnayef B, Altuna P, Gargallo-Albiol J, Peñarrocha Diago M, Hernandez-Alfaro F
International University of Catalonia, St. Cugat del Valles, Barcelona, Spain.
International University of Catalonia, St. Cugat del Valles, Barcelona, Spain.
Int J Oral Maxillofac Surg. 2016 May;45(5):636-40. doi: 10.1016/j.ijom.2015.12.009. Epub 2016 Jan 4.
The aim of this study was to define the three-dimensional angulation of the pterygomaxillary corridor in which pterygoid implants should ideally be placed. A secondary objective was to study the bone density in the tuberosity area and pterygoid plate. Two hundred and two cone beam computed tomography files of atrophic posterior maxillae were evaluated. Implant placement was guided by the individual anatomy of each patient. The mean implant angulation was 74.19±3.13° in the anteroposterior axis and 81.09±2.65° in the buccopalatal axis, relative to the Frankfort plane. Density in the tuberosity area ranged from 285.8 to 329.1DV units and density in the pterygoid plate area from 602.9 to 661.2DV units, with a 95% confidence interval. The density in the pterygoid area was 139.2% greater than in the tuberosity zone. Implant placement should be guided by the individual anatomy of each patient. Statistically significant differences were found between the tuberosity and pterygoid plate in terms of bone density. Based on the results of this study, an implant of at least 15mm long should be used in order to take advantage of the quantity and quality of the bone in this region.
本研究的目的是确定翼上颌通道的三维角度，理想情况下翼状种植体应放置于此通道内。第二个目标是研究结节区域和翼突板的骨密度。评估了202份萎缩性上颌后牙区的锥形束计算机断层扫描文件。种植体的放置以每位患者的个体解剖结构为指导。相对于法兰克福平面，种植体在前后轴的平均角度为74.19±3.13°，在颊腭轴的平均角度为81.09±2.65°。结节区域的密度范围为285.8至329.1DV单位，翼突板区域的密度范围为602.9至661.2DV单位，置信区间为95%。翼突区域的密度比结节区域大139.2%。种植体的放置应以每位患者的个体解剖结构为指导。在骨密度方面，结节和翼突板之间存在统计学上的显著差异。基于本研究结果，为了利用该区域骨的数量和质量，应使用至少15mm长的种植体。
