DE Francesco M, Gobbato E A, Noce D, Cavallari F, Fioretti A
Department of Neurosciences, Dental Clinic, University of Padova, Padova, Italy.
Oral Implantol (Rome). 2017 Feb 14;9(Suppl 1/2016 to N 4/2016):38-44. doi: 10.11138/orl/2016.9.1S.038. eCollection 2016 Jan-Mar.
The aim of this prospective pilot clinical case series report was to evaluate, through a clinical and radiographic analysis, the peri-implant bone resorption of the tantalum dental implants (TMT) (Zimmer TMT, Parsippany, NJ, USA) one year after prosthetic rehabilitation.
Twenty tantalum dental implants were placed in both maxillas and mandibles of 20 patients. Patients were asked to attend a radiographic and clinical follow-up and their previous clinical records and X-rays were assessed. Bone levels were calculated by digitally measuring the distance from the implant shoulder to the first bone-to-implant on periapical radiographs taken at surgery and after 6 and 12 months of functioning. The Pearson correlation analysis was performed to assess it there was a correlation between the measurement of the marginal bone loss (MBL). The Anova Test with a post-hoc analysis using Bonferroni's test was used to compare the three group (0, 6 months and 12 months).
The mean total MBL for the group 0 months was 0.84 mm (SD 0.21), 6 months was 0.87 mm (SD 0.22) and for 12 months was 0.89 mm (SD 0.23). The values of the Pearson's coefficients showed that the data measurement were positively correlated. The Anova test showed a statistically significant difference between the groups.
The statistically significant difference in marginal bone loss can be considered physiological. Within the limits of this study it can be concluded that TMT implants have an excellent bone crest's stability, however, to have most accurate information, will be necessary extend the sample.
本前瞻性试点临床病例系列报告的目的是通过临床和影像学分析，评估钽牙种植体（TMT）（美国新泽西州 Parsippany 的 Zimmer TMT）在修复后一年的种植体周围骨吸收情况。
在 20 名患者的上颌骨和下颌骨中植入 20 颗钽牙种植体。要求患者参加影像学和临床随访，并评估他们以前的临床记录和 X 光片。通过在手术时以及功能运行 6 个月和 12 个月后拍摄的根尖片上数字测量从种植体肩部到第一个骨与种植体接触点的距离来计算骨水平。进行 Pearson 相关分析以评估边缘骨丢失（MBL）测量之间是否存在相关性。使用 Bonferroni 检验进行事后分析的方差分析用于比较三组（0 个月、6 个月和 12 个月）。
0 个月组的平均总 MBL 为 0.84 毫米（标准差 0.21），6 个月组为 0.87 毫米（标准差 0.22），12 个月组为 0.89 毫米（标准差 0.23）。Pearson 系数值表明数据测量呈正相关。方差分析显示各组之间存在统计学上的显著差异。
边缘骨丢失的统计学显著差异可被认为是生理性的。在本研究的范围内，可以得出结论，TMT 种植体具有出色的牙槽嵴稳定性，然而，为了获得更准确的信息，有必要扩大样本量。
