Centre for Oral Immunobiology & Regenerative Medicine, Institute of Dentistry, Bart's & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK.
Centre for Oral Clinical Research, Institute of Dentistry, Bart's & The London School of Medicine & Dentistry, Queen Mary University of London (QMUL), London, UK.
Clin Oral Implants Res. 2019 Feb;30(2):139-149. doi: 10.1111/clr.13400. Epub 2019 Jan 15.
To follow-up the radiographic bone level changes and the clinical outcomes of immediately provisionalized and conventionally restored implants with a hydrophilic surface following 5 years of function.
This was a 5-year follow-up of a prospective, randomized, single-blind controlled study involving 16 of the 24 originally recruited patients in need of a single-tooth replacement in the esthetic area. Implants were either immediately provisionalized with a non-occluding temporary crown (test group, n = 7), or left without a crown (control group, n = 9). In both groups, the definitive restoration was placed 16 weeks after implant placement. Radiographic and clinical parameters were evaluated at 36, 48, and 60 months post-implant placement, together with implant survival and success rates. The esthetic outcomes were measured with the Papilla Fill Index (PFI) and the Pink Esthetic Score (PES).
At 60 months, similar peri-implant bone loss was observed in the test (-0.42 mm ±0.17 mm) and in the control (-0.37 mm ±0.35 mm) groups. A tendency for an improved esthetic outcome from implant loading to the subsequent follow-ups was noticed in both groups. Both groups presented with high levels of long-term implant survival and success.
This study supports non-functional immediate provisionalization as a viable long-term option for the management of single-tooth implants in the esthetic area. However, the small sample size does not allow statistical inference at 60 months of follow-up and future adequately powered studies are warranted.
随访亲水表面种植体即刻临时修复和常规修复后 5 年的影像学骨水平变化和临床结果。
这是一项前瞻性、随机、单盲对照研究的 5 年随访，涉及 24 名最初招募的患者中的 16 名，这些患者需要在美学区域进行单颗牙替换。种植体要么用非封闭临时冠即刻临时修复（试验组，n=7），要么不戴冠（对照组，n=9）。在两组中，在种植体放置后 16 周放置最终修复体。在植入后 36、48 和 60 个月评估影像学和临床参数，以及植入物的存活率和成功率。使用 Papilla Fill Index（PFI）和 Pink Esthetic Score（PES）评估美学结果。
在 60 个月时，试验组（-0.42mm±0.17mm）和对照组（-0.37mm±0.35mm）的种植体周围骨吸收相似。两组在从种植体加载到后续随访期间都有改善美学效果的趋势。两组均具有较高的长期植入物存活率和成功率。
本研究支持非功能性即刻临时修复作为美学区域单颗种植体管理的一种可行的长期选择。然而，小样本量不允许在 60 个月的随访时进行统计学推断，需要进行未来足够大样本量的研究。
