Jemt T, Bergendal B, Arvidsson K, Bergendal T, Karlsson U, Linden B, Palmqvist S, Rundcrantz T, Bergström C
Prosthetic Division, Brånemark Clinic, Public Dental Health, Göteborg, Sweden.
Int J Prosthodont. 1998 Nov-Dec;11(6):551-7.
The aim of this study was to evaluate the clinical and radiographic performance of patients who received implants and fixed prostheses with laser-welded titanium frameworks.
Fifty-eight consecutive patients were treated with 349 osseointegrated implants ad modum Brånemark in the edentulous maxilla at 6 implant centers. The patients were randomly arranged into 2 groups at the time of final impression. Twenty-eight patients received laser-welded titanium frameworks and 30 patients received conventional cast frameworks. Clinical and radiographic data were collected for 2 years in function.
The 2 groups of patients showed similar results. The 2-year overall cumulative implant survival rate from the time of implant placement and prosthesis insertion was 93.7% and 96.2%, respectively. The corresponding cumulative survival rate for prostheses was 96.6%. Two patients, 1 from each group, failed completely and resumed using conventional complete dentures. The only obvious factor that could possibly be related to the 2 complete failures was a smoking habit. However, it was not possible to significantly correlate implant failures to smoking habits in this study. No fractures were observed in the frameworks or implant components, and both groups experienced the same frequency of resin veneering material fractures. The overall average marginal bone loss was 0.4 mm (SD 0.8 mm).
Patients treated with implant-supported prostheses fabricated with laser-welded titanium frameworks in the edentulous maxilla presented comparable results to patients with conventional cast frameworks after 2 years in function.
本研究旨在评估接受激光焊接钛框架种植体和固定修复体患者的临床及影像学表现。
在6个种植中心，对58例连续患者的无牙上颌骨采用Brånemark种植系统植入349枚种植体。在取终印模时，患者被随机分为2组。28例患者接受激光焊接钛框架，30例患者接受传统铸造框架。对患者进行2年的功能期临床和影像学数据收集。
两组患者结果相似。从种植体植入和义齿戴入时起算，2年的种植体总体累积存留率分别为93.7%和96.2%。义齿的相应累积存留率为96.6%。两组各有1例患者完全失败，重新使用传统全口义齿。唯一可能与这两例完全失败相关的明显因素是吸烟习惯。然而，在本研究中无法将种植体失败与吸烟习惯显著关联。框架或种植体部件均未观察到骨折，两组树脂贴面材料骨折的发生率相同。总体平均边缘骨吸收为0.4mm（标准差0.8mm）。
在上颌无牙颌患者中，使用激光焊接钛框架制作种植支持式修复体的患者，在功能期2年后的结果与使用传统铸造框架的患者相当。
