University of Milano, Department of Biomedical, Surgical and Dental Sciences, Milan, Italy.
Eur Rev Med Pharmacol Sci. 2023 Apr;27(3 Suppl):77-91. doi: 10.26355/eurrev_202304_31324.
Zygomatic implant insertion surgery is a challenging operation. The primary aim of this pilot study was to assess the accuracy of EZgoma® "Inverted Support Technique" for the zygomatic implant-guided surgery. Secondly, any factors which may affect the surgical protocol results, such as implant-prosthetic virtual plan, surgical model matching, intra or post-operative complications, time rate between surgical procedure and prosthetic loading, zygomatic implant survival rate and implant success rate were analyzed.
A total of 20 zygomatic implants were placed in atrophic maxillae of 5 patients. The final position of zygomatic implants after surgery was compared with the pre-operative digitally planned position. The analyzed parameters were zygomatic implants apex and base mean linear distance and zygomatic implants axis mean angular deviation.
The comparison was provided by a tridimensional imaging elaboration platform, provided by Geomagic, which allows the overlay of virtual plan STL data with post-operative control CT scan DICOM data. As a result, all the mean values regarding the 20 placed zygomatic implants respected the universally agreed values in guided zygomatic implant surgery: the mean linear distance of the implant platform and of the implant apex were 1.59 mm and 1.62 mm respectively, while the mean angular deviation of the implant axis was equal to 1.74°. One of the patients had mucositis as a post-operative complication. In one patient the anterior wall of the maxillary sinus fractured, and in one zygomatic implant primary stabilization was not achieved. No other complications occurred.
As a conclusion, data obtained from this study suggested that guided zygomatic implant rehabilitation may represent a reliable, efficient, rapid, ergonomic, and safe surgical protocol, however further investigations are needed.
颧骨种植体植入手术是一项具有挑战性的操作。本研究的主要目的是评估 EZgoma®“倒置支撑技术”在颧骨种植体引导手术中的准确性。其次，分析任何可能影响手术方案结果的因素，例如种植体-修复体虚拟计划、手术模型匹配、术中或术后并发症、手术程序和修复体加载之间的时间比率、颧骨种植体存活率和种植体成功率。
总共将 20 个颧骨种植体放置在 5 名患者的萎缩上颌骨中。术后颧骨种植体的最终位置与术前数字计划位置进行比较。分析的参数为颧骨种植体尖端和基底部的平均线性距离以及颧骨种植体轴的平均角度偏差。
通过 Geomagic 提供的三维成像处理平台提供比较，该平台允许将虚拟计划 STL 数据与术后控制 CT 扫描 DICOM 数据进行叠加。结果，所有 20 个放置的颧骨种植体的平均值均符合引导颧骨种植体手术的通用标准：种植体平台和种植体尖端的平均线性距离分别为 1.59 毫米和 1.62 毫米，而种植体轴的平均角度偏差等于 1.74°。一名患者发生术后黏膜炎并发症。一名患者上颌窦前壁骨折，一名颧骨种植体未能实现初次稳定。未发生其他并发症。
从这项研究中获得的数据表明，引导颧骨种植体修复可能是一种可靠、高效、快速、符合人体工程学和安全的手术方案，但需要进一步研究。
