Hultin Kristina, Eriksson Annelie, Backe Christina, Johansson Ulf, Bougas Kostas
Department of Prosthodontics, Södra Älvsborg Hospital, BoråsSweden.
Department of Oral and Maxillofacial Surgery, Södra Älvsborg Hospital, BoråsSweden.
J Oral Maxillofac Res. 2020 Dec 31;11(4):e3. doi: 10.5037/jomr.2020.11403. eCollection 2020 Oct-Dec.
Evidence on the clinical performance of recently introduced dental implants in titanium-zirconium alloy is sparse. The aim of the present pilot study with randomized controlled design is to compare changes in supporting structures around dental titanium-zirconium alloy implants to commercially pure titanium implants.
The present material includes consecutive patients referred to a specialist clinic in Sweden. Two patient groups treated with dental implants in two different materials - titanium (Ti) and titanium-zirconium (TiZr) - were defined after block randomisation for smoking. In total, 40 implants installed in 21 patients were available for one-year follow-up. Marginal bone level, soft tissue height and width of keratinised mucosa were registered at baseline and at one-year follow-up.
At implant level, the test group (TiZr) yielded significant marginal bone loss (P < 0.001) after one year. Additionally, marginal bone loss after one year was significantly higher for TiZr implants (P < 0.001) as compared to traditional Ti implants. Soft tissue dimensions were stable throughout the evaluation time for both implant materials.
One-year results indicate more pronounced initial marginal bone loss for dental implants in titanium-zirconium alloy as compared to implants made of commercially pure titanium.
关于最近推出的钛锆合金牙科植入物临床性能的证据很少。本项采用随机对照设计的初步研究旨在比较牙科钛锆合金植入物周围支持结构与商业纯钛植入物的变化。
本材料包括转诊至瑞典一家专科诊所的连续患者。根据吸烟情况进行区组随机化后，确定了两组接受两种不同材料（钛（Ti）和钛锆（TiZr））牙科植入物治疗的患者组。共有21名患者植入的40颗种植体可供进行一年的随访。在基线和一年随访时记录边缘骨水平、软组织高度和角化黏膜宽度。
在种植体水平上，试验组（TiZr）在一年后出现了显著的边缘骨丢失（P < 0.001）。此外，与传统钛种植体相比，TiZr种植体在一年后的边缘骨丢失明显更高（P < 0.001）。在整个评估期间，两种种植体材料的软组织尺寸均保持稳定。
一年的结果表明，与商业纯钛制成的种植体相比，钛锆合金牙科植入物的初始边缘骨丢失更为明显。
