Department of Maxillofacial Surgery and Dentistry, Erasme Hospital, Free University of Brussels, Belgium.
Int J Oral Maxillofac Surg. 2010 Apr;39(4):358-63. doi: 10.1016/j.ijom.2010.01.009. Epub 2010 Feb 18.
The zygomatic implant is an alternative to bone grafting in extremely resorbed maxilla. This study evaluates the results of a consecutive cohort of 20 patients (mean age 56 years) with extremely resorbed maxillas provided with four zygomatic implants. The first 10 patients had a two-stage procedure, the next 10 next patients benefited from a one-stage surgical procedure and one of them had flapless guided surgery with Nobelguide in development and immediate function. The same surgical drilling protocol, according to Branemark's procedure, was applied to all the patients. Except for one patient who lost three implants, 18 patients received a fixed Procera implant bridge and another an overdenture retained by a screwed bar fixed on the four zygomatic implants. The cumulative survival rate after 40 months is 96%. Although bone augmenting procedures such as onlay grafts and sinus grafts are popular and well-documented, the four zygomatic implants procedure results in less morbidity, shorter delays between anatomical reconstruction and functional rehabilitation and can provide immediate or early loading with immediate function. Four zygomatic implants and a fixed bridge seem to be a valuable technique for the rehabilitation of extremely resorbed maxillas.
颧骨种植体是严重萎缩上颌骨骨移植的替代方法。本研究评估了 20 例连续患者（平均年龄 56 岁）的结果，这些患者的上颌骨严重萎缩，植入了 4 个颧骨种植体。前 10 名患者接受了两阶段手术，接下来的 10 名患者受益于一阶段手术，其中 1 名患者接受了无瓣引导手术，使用 Nobelguide 进行开发和即刻功能。所有患者均采用根据 Branemark 手术的相同手术钻孔方案。除了一名患者丢失了三个种植体外，18 名患者接受了固定 Procera 种植体桥修复，另一名患者接受了通过固定在四个颧骨种植体上的螺丝杆固定的覆盖义齿修复。40 个月后的累积存活率为 96%。尽管诸如骨增量术如骨块移植和窦底提升术很受欢迎且有充分的记录，但四颗颧骨种植体手术的结果是发病率较低，解剖重建和功能康复之间的延迟较短，并且可以进行即刻或早期加载和即刻功能。四颗颧骨种植体和固定桥似乎是严重萎缩上颌骨修复的一种有价值的技术。
