Meloni Silvio Mario, De Riu Giacomo, Pisano Miena, Cattina Gavino, Tullio Antonio
Maxillofacial Surgery Department, University of Sassari, Sassari, Italy.
Eur J Oral Implantol. 2010 Autumn;3(3):245-51.
To evaluate the clinical outcome of fully edentulous patients in the maxilla, who were treated with immediately loaded implant-supported cross-arch bridges using computer-aided implant surgery.
The clinical outcome of 15 consecutive patients (5 males and 10 females) with a mean age of 52 years (range 40 to 70), with edentulous arches and treated with implant-supported cross-arch bridges was evaluated. Two computed tomography scans were performed, the first with the patient wearing the denture/radiographic guide and the radiographic index, and the second of the denture alone. The guided flapless surgical procedure was performed under local anaesthesia. Ninety implants were placed. The implant length ranged from 10 to 13 mm and the implant diameter was either 4.3 or 5 mm. All implants were immediately loaded with screw-retained provisional acrylic prostheses prepared in advance and delivered immediately after surgery. Clinical and radiographic follow-up visits were scheduled at 6, 12 and 18 months from surgery; implant survival rate, marginal bone levels, patient satisfaction and any complications were recorded.
After the follow-up period of 18 months, two patients each lost one implant. After 18 months, patients lost, on average, 1.6 mm of peri-implant marginal bone. A patient satisfaction questionnaire at 18 months revealed a very high level of satisfaction with the treatment.
Although limited by the number of patients, it can be concluded that software- and computed tomography-guided surgical planning for completely edentulous arches provides reliable results with high success rates.
评估采用计算机辅助种植手术，即刻加载种植体支持的跨牙弓桥修复上颌全口无牙患者的临床疗效。
评估15例连续患者（5例男性，10例女性）的临床疗效，患者平均年龄52岁（范围40至70岁），牙弓无牙，接受种植体支持的跨牙弓桥修复。进行了两次计算机断层扫描，第一次扫描时患者佩戴义齿/放射导板和放射指数装置，第二次仅扫描义齿。在局部麻醉下进行引导下的无瓣手术。共植入90枚种植体。种植体长度为10至13毫米，种植体直径为4.3或5毫米。所有种植体均即刻加载预先制备的螺丝固位临时丙烯酸树脂假体，并在手术后立即交付。安排在术后6、12和18个月进行临床和影像学随访；记录种植体存活率、边缘骨水平、患者满意度及任何并发症。
随访18个月后，两名患者各丢失一枚种植体。18个月后，患者种植体周围边缘骨平均丢失1.6毫米。18个月时的患者满意度调查问卷显示对治疗的满意度非常高。
尽管受患者数量限制，但可以得出结论，软件和计算机断层扫描引导的全口无牙弓手术规划能提供可靠结果且成功率高。
