Malo Paulo, de Araujo Nobre Miguel, Lopes Armando
J Prosthet Dent. 2007 Jun;97(6 Suppl):S26-34. doi: 10.1016/S0022-3913(07)60005-5.
There is a need for clinical evidence for the of use of computer tomography and CAD-CAM technology for surgical planning and fabrication of a custom surgical template in the rehabilitation of complete edentulous jaws with a prosthesis supported by 4 implants placed in immediate function.
The purpose of this study was to report on the preliminary clinical outcomes of survival and bone loss for prosthodontic rehabilitation using computer-guided flapless implant surgery and 4 implants placed in immediate function to support a fixed denture.
This clinical study included 23 consecutively treated patients (18 maxillae and 5 mandibles). Ninety-two implants were placed supporting fixed complete dentures followed between 6 and 21 months (mean of 13 months). Recall examinations included clinical evaluation of implant mobility, patient-reported discomfort, suppuration, and infection. The radiographic assessment included the determining of the marginal bone level at 6 and 12 months. A cumulative implant survival rate was calculated, and data were analyzed with descriptive statistics.
The overall cumulative implant survival rate at 1 year was 97.8%, with 97.2% and 100% in the maxilla and the mandible, respectively. The average marginal bone loss was 1.9 mm at the 1-year follow-up.
The results of this study indicate that, within the limitations of this preliminary study, this treatment modality for completely edentulous jaws is predictable with a high survival rate.
在使用计算机断层扫描和计算机辅助设计与制造（CAD-CAM）技术进行手术规划以及制作定制手术模板，以修复通过即刻功能植入的4颗种植体支持的全口无牙颌假体时，需要临床证据。
本研究的目的是报告使用计算机引导的无瓣种植手术和即刻功能植入的4颗种植体支持固定义齿进行口腔修复的生存和骨丢失的初步临床结果。
本临床研究纳入了23例连续接受治疗的患者（18例上颌和5例下颌）。植入了92颗种植体以支持固定全口义齿，随访时间为6至21个月（平均13个月）。复诊检查包括对种植体松动度、患者报告的不适、化脓和感染的临床评估。影像学评估包括在6个月和12个月时确定边缘骨水平。计算累积种植体存活率，并采用描述性统计方法分析数据。
1年时的总体累积种植体存活率为97.8%，上颌和下颌分别为97.2%和100%。1年随访时的平均边缘骨丢失为1.9毫米。
本研究结果表明，在这项初步研究的局限性内，这种治疗全口无牙颌的方式具有较高的存活率，是可预测的。
