ObjectiveTo assess the clinical, radiographic and patient‐reported outcomes (PROMs) of posterior zirconia and titanium implants at 1 year of implant loading.Materials and MethodsForty‐two patients with two adjacent missing teeth were enrolled in a randomized controlled trial with a within‐subject controlled design. Each patient received one zirconia (Zr) and one titanium (Ti) implant, with the mesial and distal positions randomized. The implant restoration consisted of multiple layered zirconia, with the buccal aspect veneered. In group Zr, the restoration was intraorally cemented onto the one‐piece Zr implant, whereas in group Ti, the restoration was extraorally cemented onto the titanium base abutment and intraorally screw‐retained onto the Ti implant. Examinations were performed following restoration delivery at baseline (BL) and at 1 year. Measurements included clinical parameters, radiographic outcomes (MBL) and PROMs.ResultsBleeding on probing showed an increase from BL to 1 year (34 ± 30% for Zr; 25 ± 21% for Ti). MBL remained stable with minimal changes from BL to 1 year, measuring 0.1 ± 0.4 mm (mean ± SD) for Zr and −0.1 ± 0.7 mm for Ti. Veneering fractures were the most frequent technical complication and amounted to 17.5% in group Zr and 5% in group Ti (p = .100). Patients preferred Zr implants for their soft tissue color, with a significant difference in perception between patients and clinicians (p < .017).ConclusionThe study showed that both Zr and Ti implants had similar clinical outcomes, despite a high prevalence of mucositis and a few technical complications. Both implant types demonstrated stable marginal bone levels and similar patient‐reported outcome measures.

中文翻译：

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负重 1 年后后区氧化锆和钛植入物的临床、放射学和患者报告的结果——一项随机对照试验


目的评估后氧化锆和钛种植体在种植体负重 1 年时的临床、影像学和患者报告结局 （PROM）。材料和方法42 例相邻缺失牙齿的患者被纳入一项采用受试者内对照设计的随机对照试验。每位患者接受 1 个氧化锆 （Zr） 和 1 个钛 （Ti） 植入物，近中和远中位置随机分配。种植体修复体由多层氧化锆组成，颊侧采用贴面处理。在 Zr 组中，修复体口内粘合到一体式 Zr 种植体上，而在 Ti 组中，修复体在口外粘合到钛基座上，并在 Ti 种植体上进行口内螺钉固位。在基线 （BL） 和 1 年恢复分娩后进行检查。测量包括临床参数、影像学结果 （MBL） 和 PROMs.结果探诊出血显示从 BL 增加到 1 年（Zr 为 34 ± 30%;Ti 为 25 ± 21%）。MBL 保持稳定，从 BL 到 1 年的变化很小，Zr 为 0.1 ± 0.4 mm（平均 ± SD），Ti 为 -0.1 ± 0.7 mm。贴面骨折是最常见的技术并发症，Zr 组为 17.5%，Ti 组为 5% （p = .100）。患者更喜欢 Zr 植入物的软组织颜色，患者和临床医生之间的感知存在显着差异 （p < .017）。结论研究表明，尽管粘膜炎的患病率很高，并且存在一些技术并发症，但 Zr 和 Ti 植入物的临床结果相似。两种种植体类型都显示出稳定的边缘骨水平和相似的患者报告结局指标。