Abstract：
To evaluate the implant and prosthetic of two implants with different surfaces and neck design. Enrolled patients received bone level, 12° conical connection implants (Nobel Parallel, Nobel Biocare; NOBEL group) with anodized surface (TiUnite) and roughness of 1.35 μm, or transmucosal implant system (Prama, Sweden and Martina; PRAMA group) with convergent collar, ZIrTi surface, and roughness 1.4-1.7 μm. Both implants were made of pure grade IV titanium, with similar diameter and length, chosen according to the dentistry department availability and patient\'s request. After early prosthesis delivery, patients were filled for at least one year. Outcome measures were: implant and prosthetic survival and success rates, physiological marginal bone remodeling, periodontal parameters and pink esthetic score (PES). Results: Fifteen patients were allocated and treated in each group. At the one-year follow-up, three patients dropped out, one in the NOBEL group and two in the PRAMA group. During the entire time of investigation, all implants survived and the prostheses were successful. No statistically significant differences were found in term of marginal bone loss, periodontal parameters, and aesthetics (p > 0.05). Conclusion: With the limitations of the present study, both implant systems showed successful clinical results. Finally, many other clinical and surgical variables may influenced marginal bone levels, implant survival, and periodontal parameters. More homogenous clinical trials with larger samples are needed to confirm these preliminary conclusions.
摘要：
评估两种不同表面和颈部设计的植入物和假体。登记的患者接受了骨水平，12°锥形连接植入物(诺贝尔平行，NobelBiocare；NOBEL组），阳极氧化表面（TiUnite），粗糙度为1.35μm，或经粘膜植入系统(Prama，瑞典和玛蒂娜；PRAMA组)，领口收敛，ZIrTi表面，粗糙度1.4-1.7μm。两种植入物均由纯IV级钛制成，具有相似的直径和长度，根据牙科部门的可用性和患者的要求选择。早期假体输送后,患者至少填充1年.结果指标是：植入物和假体的存活率和成功率，生理边缘骨重建，牙周参数和粉红色美学评分（PES）。结果：每组15例患者被分配和治疗。在为期一年的随访中，三个病人退出了，NOBEL组一个，PRAMA组两个。在整个调查期间,所有植入物均存活,假体成功.在边缘骨丢失方面无统计学差异，牙周参数，和美学(p>0.05)。结论:由于本研究的局限性,两种植入系统均显示成功的临床结果.最后,许多其他临床和手术变量可能会影响边缘骨水平，植入物存活，和牙周参数。需要更大样本的更同质临床试验来证实这些初步结论。
