Balshi T J, Lee H Y, Hernandez R E
Institute for Facial Esthetics, Fort Washington, Pennsylvania 19034, USA.
Int J Oral Maxillofac Implants. 1995 Jan-Feb;10(1):89-98.
One hundred eighty-seven implants were placed in the maxillary posterior areas of 44 partially edentulous patients (29 female; 15 male). The mean age was 62 years (range 36 to 82 years). Fifty-one of the 187 implants were placed in the pterygomaxillary area and further restored with fixed prostheses. The mean number of implants per prosthesis was 3.7 (range 1 to 6) for the maxillary posterior area. These 51 implants are the subject of this report. During stage II surgery and before loading, six implants were not osseointegrated and were removed. After a mean loading period of 12.6 months (range 1 to 63 months), one additional implant was lost. Seven of 51 implants were removed (13.7%). Failure rates according to implant size and bone quality were also analyzed. The average loss of marginal bone height was 1.3 mm on the mesial and 1.1 mm on the distal surfaces between 1 and 3 years of loading. This study demonstrates the possible and successful use of the pterygomaxillary site for implant placement.
187颗种植体植入44例部分牙列缺损患者（29例女性，15例男性）的上颌后部区域。平均年龄为62岁（范围36至82岁）。187颗种植体中的51颗植入翼上颌区域，并进一步用固定修复体修复。上颌后部区域每个修复体的种植体平均数量为3.7颗（范围1至6颗）。这51颗种植体是本报告的研究对象。在二期手术期间及加载前，6颗种植体未实现骨整合并被取出。在平均12.6个月（范围1至63个月）的加载期后，又有1颗种植体丢失。51颗种植体中有7颗被取出（13.7%）。还分析了种植体尺寸和骨质的失败率。在加载1至3年期间，近中边缘骨高度平均丧失1.3 mm，远中边缘骨高度平均丧失1.1 mm。本研究证明了翼上颌部位用于种植体植入的可行性和成功性。
