Department of Maxillo-Facial Surgery, Faculty of Medicine - University of Florence, Italy.
Clin Implant Dent Relat Res. 2012 May;14 Suppl 1:e98-108. doi: 10.1111/j.1708-8208.2011.00379.x. Epub 2011 Oct 20.
Immediate occlusal loading of dental implants in the edentulous mandible has proven to be an effective, reliable, and predictable treatment protocol. However, there is limited long-term data available in the literature, when an electroeroded definitive cast-titanium fixed prosthesis is used for this treatment protocol.
The aim of this study was to evaluate the clinical effectiveness of dental implants (Astra Tech Dental, Mölndal, Sweden) in the edentulous mandible immediately loaded with an electroeroded cast-titanium screw-retained fixed prosthesis.
Forty-five patients received five implants each in the interforaminal area. All the implants were inserted with torque up to 40 Ncm and the distal implants were distally tilted approximately 20 to 30 degrees to minimize the length of posterior cantilevers. Implants were loaded within 48 hours of placement with an acrylic resin-titanium screw-retained prosthesis fabricated by electroerosion.
Two of the 225 inserted implants failed after 3 and 16 months of healing, respectively, with a cumulative survival rate of 99.1% and a prosthetic survival rate of 97.8%.
Immediate loading of tilted dental implants inserted in the edentulous mandible with a screw-retained titanium definitive prosthesis fabricated with electrical discharge machining provide reliable and predictable results.
即刻负载种植体在无牙颌中已被证明是一种有效、可靠且可预测的治疗方案。然而，当使用电侵蚀法制作最终的铸钛螺丝固位式修复体时，文献中提供的长期数据有限。
本研究旨在评估即刻负载电侵蚀铸钛螺丝固位式固定修复体在无牙颌种植体中的临床效果。
45 名患者在牙槽嵴间区各植入 5 枚种植体。所有种植体均以 40 Ncm 的扭矩植入，远中种植体向远中倾斜约 20 至 30 度，以尽量减小后牙悬臂的长度。种植体植入后 48 小时内，使用电侵蚀法制作的丙烯酸树脂-钛螺丝固位式修复体即刻负载。
225 枚植入的种植体中有 2 枚分别在愈合后 3 个月和 16 个月时失败，累积存活率为 99.1%，修复体存活率为 97.8%。
倾斜种植体即刻负载，使用电侵蚀法制作的螺丝固位式钛最终修复体，在无牙颌中提供了可靠和可预测的结果。
