Sohn Dong-Seok, Lee Jae-Mok, Park In-Sook, Jung Heui-Seung, Park Do-Young, Shin Im-Hee
Int J Periodontics Restorative Dent. 2014 Jul-Aug;34(4):565-71. doi: 10.11607/prd.1086.
The purpose of this study was to analyze clinical and radiographic outcomes of sintered porous-surfaced dental implants placed in partially edentulous posterior maxillae. The study group consisted of 42 partially edentulous patients who received sinus augmentation using the lateral window technique or crestal approach at Catholic University Hospital of Daegu and one private clinic. The 42 patients received a total of 92 sintered porous-surfaced dental implants in the edentulous posterior maxillae. All implants were restored with fixed prostheses. Of the 92 implants, 17 implants were restored with individual (nonsplinted) crowns, while 75 implants were splinted to other implants. Panoramic views and periapical radiographs using the standardized long-cone paralleling technique were taken at the first visit, postoperatively, at the time of prosthesis seating, and at a follow-up visit. Survival rates of implants in relation to location, length, diameter, crown-to-implant (C/I) ratio, and type of prosthesis were investigated. Statistical data were analyzed using software with the chi-square test. Of the 92 implants, 8 (8.7%) were removed, and the cumulative survival rate was 91.3% after a maximum 9-year functional period (mean: 72.8 months; range: 11 to 107 months). There were no statistical differences in relation to the location of implants, C/I ratio, or type of prosthesis. However, there were statistical differences in relation to the length and diameter of implants. Average crestal bone loss was 0.68 mm at 1-year follow-up and 1.13 mm at final examination. All implants were inserted in the augmented maxillary sites. The cumulative survival rate of sintered porous-surfaced implants in posterior maxillae was 91.3%. Sintered porous-surfaced implants showed satisfactory results in the edentulous posterior maxillae.
本研究的目的是分析置于部分缺牙的上颌后牙区的烧结多孔表面牙种植体的临床和影像学结果。研究组由42例部分缺牙患者组成，这些患者在大邱天主教大学医院和一家私人诊所接受了使用侧窗技术或嵴顶入路的上颌窦提升术。这42例患者在上颌后牙区共植入了92颗烧结多孔表面牙种植体。所有种植体均采用固定修复体修复。在92颗种植体中，17颗种植体采用单冠（非联冠）修复，而75颗种植体与其他种植体联冠。在首次就诊、术后、修复体就位时以及随访时，使用标准化长锥平行技术拍摄全景片和根尖片。研究了种植体的存留率与位置、长度、直径、冠根比（C/I）以及修复体类型的关系。使用软件进行卡方检验分析统计数据。在92颗种植体中，有8颗（8.7%）被取出，在最长9年的功能期（平均：72.8个月；范围：11至107个月）后，累积存留率为91.3%。种植体的位置、C/I比或修复体类型之间无统计学差异。然而，种植体的长度和直径之间存在统计学差异。1年随访时平均嵴顶骨吸收为0.68 mm，最终检查时为1.13 mm。所有种植体均植入上颌窦提升后的部位。上颌后牙区烧结多孔表面种植体的累积存留率为91.3%。烧结多孔表面种植体在上颌后牙区缺牙区显示出令人满意的结果。
