Biomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine Basel, University of Basel, Basel, Switzerland.
Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Clin Implant Dent Relat Res. 2021 Aug;23(4):593-599. doi: 10.1111/cid.13013. Epub 2021 May 27.
Although 5-year clinical data exist for different zirconia implants, no analysis has yet been performed focusing on how the surface topography of the implant affects clinical parameters.
To analyze the influence of zirconia implant topography on first bone implant contact (fBIC).
In a prospective two-center cohort investigation 63 zirconia implants were evaluated at implant placement, prosthetic delivery, 1, 3, and 5 years. The distance (DIB) between implant shoulder and fBIC was measured at each time point in periapical radiographs at mesial and distal sites. Two-way ANOVA/Bonferroni was used to analyze the effects of time and center (α < 0.05).
Between the centers, the mean DIB varied significantly at implant placement (Freiburg [FR]: 1.4 ± 0.6 mm; Zurich [ZH]: 0.8 ± 0.5 mm). Thereafter, no statistically significant difference in DIB was observed, neither between centers nor between time points (prosthetic delivery: FR: 1.9 ± 0.6 mm, ZH: 1.7 ± 0.8 mm; 1 year: FR: 1.8 ± 0.6 mm, ZH: 1.6 ± 0.8 mm; 3 years: FR: 1.9 ± 0.8 mm, ZH: 1.7 ± 0.8 mm; 5 years: FR: 1.9 ± 0.8 mm, ZH 1.8 ± 0.6 mm). The overall mean DIB at prosthetic delivery to 5 years of both centers (1.8 ± 0.7 mm) is located within the transition zone between the smooth neck and the moderately rough intraosseous part (1.6-2.0 mm from the implant shoulder). However, individual DIB values are ranging from 0.1 to 4.2 mm overlapping the transition zone.
The standard deviation of the DIB indicates that the fBIC establishes on moderately rough and smooth surfaces. Consequently, soft tissue adapts to both topographies as well.
尽管已有不同氧化锆种植体的 5 年临床数据，但尚未有分析专门针对种植体表面形貌如何影响临床参数。
分析氧化锆种植体表面形貌对初次骨-种植体接触（fBIC）的影响。
在一项前瞻性的双中心队列研究中，63 例氧化锆种植体在种植体植入、修复体戴入时以及第 1、3、5 年进行评估。在根尖片上于近中和远中位点测量种植体肩台与 fBIC 之间的距离（DIB）。采用双因素方差分析/ Bonferroni 检验分析时间和中心的影响（α < 0.05）。
两个中心之间，种植体植入时的平均 DIB 差异有统计学意义（弗赖堡 [FR]：1.4 ± 0.6 mm；苏黎世 [ZH]：0.8 ± 0.5 mm）。此后，无论是中心之间还是时间点之间，DIB 均无统计学差异（修复体戴入时：FR：1.9 ± 0.6 mm，ZH：1.7 ± 0.8 mm；1 年时：FR：1.8 ± 0.6 mm，ZH：1.6 ± 0.8 mm；3 年时：FR：1.9 ± 0.8 mm，ZH：1.7 ± 0.8 mm；5 年时：FR：1.9 ± 0.8 mm，ZH：1.8 ± 0.6 mm）。两个中心从修复体戴入到 5 年的总体平均 DIB（1.8 ± 0.7 mm）位于光滑颈部和适度粗糙骨内部分之间的过渡区（从种植体肩台起 1.6-2.0 mm）。然而，个别 DIB 值范围为 0.1-4.2 mm，与过渡区重叠。
DIB 的标准差表明 fBIC 建立在适度粗糙和光滑的表面上。因此，软组织也适应这两种形貌。
