Goh B T, Teoh K H
National Dental Centre Singapore, Singapore, Republic of Singapore.
National Dental Centre Singapore, Singapore, Republic of Singapore.
Int J Oral Maxillofac Surg. 2015 May;44(5):642-8. doi: 10.1016/j.ijom.2014.11.017. Epub 2015 Jan 25.
Surgical implant placement in the orbital region for the support of a prosthesis is challenging due to the thin orbital rim and proximity to vital structures. This article reports the use of a computer-aided design and manufacturing (CAD/CAM) stereolithographic surgical template protocol for orbital implant placement in four patients, who were followed-up for about 7 years. A total of 11 orbital implants were inserted, eight of these in irradiated bone. No intraoperative complications were noted in any of the patients and the implants were all inserted in the planned positions. The survival rate of implants placed in irradiated bone that received hyperbaric oxygen therapy was 62.5% (5/8). One implant failed in a burns injury patient at 74 months after functional loading. The overall survival of implants in the orbital region and the cumulative survival at 7 years was 63.6%. With regard to skin reactions around the abutments, 85% were grade 0, 13% were grade 1, and 2% were grade 2 according to the Holgers classification. The mean survival time of the first prosthesis was 49 months. High patient satisfaction was achieved with the implant-retained orbital prostheses.
由于眶缘较薄且靠近重要结构，在眼眶区域植入外科种植体以支撑假体具有挑战性。本文报告了在4例患者中使用计算机辅助设计与制造（CAD/CAM）立体光刻手术模板方案进行眼眶种植体植入的情况，并对这些患者进行了约7年的随访。共植入11枚眼眶种植体，其中8枚植入放疗后的骨组织中。所有患者术中均未出现并发症，种植体均按计划位置植入。接受高压氧治疗的放疗后骨组织中植入的种植体存活率为62.5%（5/8）。1例烧伤患者在功能加载74个月后有1枚种植体失败。眼眶区域种植体的总体存活率及7年累积存活率为63.6%。根据霍尔格斯分类法，基台周围皮肤反应85%为0级，13%为1级，2%为2级。首个假体的平均存活时间为49个月。种植体支持的眼眶假体获得了较高的患者满意度。
