Abstract：
The objective of this study was to investigate the survival and biological and mechanical complications of one-piece and two-piece zirconia implants at five years of loading.
Consecutive patients receiving zirconia implants were studied, collecting data at five years of loading on their clinical history, peri-implant health status, mechanical complications, esthetic results, and patient related outcomes.
The study included 18 patients with 29 implants. The survival rate was 86% in implant-based analysis and 78% in patient-based analysis. There were no cases of peri-implantitis, but mucositis was present in 53% of implants. A mean of 4.1 ± 0.81 mm was obtained for probing depth and 1.6 ± 0.9 mm for crestal bone loss (radiographic assessment). There were no implant fractures. Major (10%) and minor (10%) prosthesis complications were observed. The esthetic outcome was moderate to almost perfect, with a high level of patient satisfaction. No significant association was found between survival rate and the presence of mucositis around one- or two-piece implants or any other study variable.
The survival rate is low for one- and two-piece zirconia implants. Both types of implants demonstrated a low mechanical complication rate. The incidence of periimplantitis is low but mucositis is present in 50%. Patient satisfaction related to esthetics and function is moderate to high. They represent a good option for patients requiring an alternative to titanium implants.
Zirconia implants appear to be an alternative to the titanium option and may be indicated for patients requiring \"metal-free\" restorations.
Consecutive patients receiving zirconia implants were studied, collecting data at five years of loading on their clinical history, peri-implant health status, mechanical complications, esthetic results, and patient related outcomes.
The study included 18 patients with 29 implants. The survival rate was 86% in implant-based analysis and 78% in patient-based analysis. There were no cases of peri-implantitis, but mucositis was present in 53% of implants. A mean of 4.1 ± 0.81 mm was obtained for probing depth and 1.6 ± 0.9 mm for crestal bone loss (radiographic assessment). There were no implant fractures. Major (10%) and minor (10%) prosthesis complications were observed. The esthetic outcome was moderate to almost perfect, with a high level of patient satisfaction. No significant association was found between survival rate and the presence of mucositis around one- or two-piece implants or any other study variable.
The survival rate is low for one- and two-piece zirconia implants. Both types of implants demonstrated a low mechanical complication rate. The incidence of periimplantitis is low but mucositis is present in 50%. Patient satisfaction related to esthetics and function is moderate to high. They represent a good option for patients requiring an alternative to titanium implants.
Zirconia implants appear to be an alternative to the titanium option and may be indicated for patients requiring \"metal-free\" restorations.
摘要：
目的：这项研究的目的是调查一件式和两件式氧化锆植入物在五年负荷下的存活率以及生物和机械并发症。
方法：研究了连续接受氧化锆植入物的患者，在他们的临床病史加载五年时收集数据，种植体周围的健康状况，机械性并发症,美学结果，和患者相关的结果。
结果：该研究包括18名患者和29个植入物。在基于植入物的分析中,存活率为86%,在基于患者的分析中,存活率为78%。没有植入周炎的病例,但53%的植入物存在粘膜炎。探测深度的平均值为4.1±0.81mm，s骨丢失的平均值为1.6±0.9mm（影像学评估）。没有植入物骨折。观察到主要（10％）和次要（10％）的假体并发症。美学结果是中等到几乎完美的，患者满意度高。在存活率与一件或两件式植入物或任何其他研究变量周围的粘膜炎之间没有发现显着关联。
结论：一件式和两件式氧化锆植入物的存活率较低。两种类型的植入物均显示出较低的机械并发症发生率。种植体周围炎的发生率较低，但粘膜炎的发生率为50％。与美学和功能相关的患者满意度是中等到高的。对于需要钛植入物替代品的患者来说，它们是一个很好的选择。
结论：氧化锆植入物似乎是钛选项的替代品，可能适用于需要“无金属”修复的患者。
方法：研究了连续接受氧化锆植入物的患者，在他们的临床病史加载五年时收集数据，种植体周围的健康状况，机械性并发症,美学结果，和患者相关的结果。
结果：该研究包括18名患者和29个植入物。在基于植入物的分析中,存活率为86%,在基于患者的分析中,存活率为78%。没有植入周炎的病例,但53%的植入物存在粘膜炎。探测深度的平均值为4.1±0.81mm，s骨丢失的平均值为1.6±0.9mm（影像学评估）。没有植入物骨折。观察到主要（10％）和次要（10％）的假体并发症。美学结果是中等到几乎完美的，患者满意度高。在存活率与一件或两件式植入物或任何其他研究变量周围的粘膜炎之间没有发现显着关联。
结论：一件式和两件式氧化锆植入物的存活率较低。两种类型的植入物均显示出较低的机械并发症发生率。种植体周围炎的发生率较低，但粘膜炎的发生率为50％。与美学和功能相关的患者满意度是中等到高的。对于需要钛植入物替代品的患者来说，它们是一个很好的选择。
结论：氧化锆植入物似乎是钛选项的替代品，可能适用于需要“无金属”修复的患者。
