Facial mucosal level of single immediately placed implants with either immediate provisionalization or delayed restoration: An intermediate-term study.
Facial mucosal level of single immediately placed implants with either immediate provisionalization or delayed restoration: An intermediate-term study.
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单次即刻放置种植体即刻修复或延迟修复的面部黏膜水平：一项中期研究
DOI：
10.1002/jper.20-0746
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发表时间：
2021-09
影响因子：
4.3
通讯作者：
Chan HL
中科院分区：
文献类型：
--
作者：
Bushahri A;Kripfgans OD;George F;Wang IC;Wang HL;Chan HL
在我们之前的随机临床试验中，立即放置单种植体，立即预备（测试）或延迟修复（对照），随访时间长达1年。种植体正常工作后，种植体周围组织继续重塑。因此，本研究的主要目的是评估两组患者中期面部粘膜水平的变化，并研究影响粘膜水平变化的潜在因素。已经通过接受单个立即放置的植入物完成先前临床试验的患者再次被邀请参加这项研究。通过临床、x线摄影和超声测量面部粘膜水平以及种植体周围其他硬软组织的尺寸和状况。这些数据在测试和对照植入物之间进行了比较。使用线性回归模型估计粘膜水平变化作为最终冠轮廓的函数，测量为基牙-冠角（ACA）。28例患者（试验组/对照组= 16/12）平均随访30个月。平均粘膜水平变化为- 0.38 mm（对照组）和0.06 mm（试验组），两组间差异无统计学意义。其他临床、影像学和超声参数无统计学差异。ACA与经济衰退有统计学意义（P = 0.02）。估计效应为每增加10°0.25 mm（校正R2 = 0.18; 95% CI， 0.02至0.49 mm）。调整种植体垂直位置、种植体基牙角度和组后，效果达到临界显著（P = 0.09）。种植体周围组织，包括立即放置种植体的粘膜水平变化，无论是立即修复还是延迟修复，都保持稳定，并且在中期各组之间没有差异。最终冠角受种植体位置和基牙角度的影响，可能与粘膜缘水平变化有关。
Immediately placed single implants with either immediate provisionalization (test) or delayed restoration (control) were followed for up to 1 year in our previous randomized clinical trial. Peri-implant tissues continue to remodel after implants are in function. Therefore, the primary aim of this study was to evaluate the facial mucosal level changes in the intermediate term between the two groups and to study potential factors influencing the mucosal level change. Patients who had already completed the previous clinical trial by receiving a single immediately placed implant were re-invited to this study. The facial mucosal level as well as the other peri-implant hard and soft tissue dimensions and conditions were measured clinically, radiographically and with ultrasound. These data were compared between the test and control implants. The mucosal level change as the function of the final crown contour, measured as the abutment-crown angle (ACA), was estimated with a linear regression model. Twenty-eight patients (n of test/control = 16/12) with a mean 30-month follow-up were recruited. The mean mucosal level change was −0.38 mm (control) and 0.06 mm (test), without statistical difference between the two groups. The other clinical, radiographic, and ultrasound parameters were not statistically different. ACA was statistically significant associated with the recession (P = 0.02). The estimate effect was 0.25 mm per 10° increase (adjusted R2 = 0.18; 95% CI, 0.02 to 0.49 mm). After adjusting for vertical implant position, implant abutment angle and the group, the effect became borderline significant (P = 0.09). Peri-implant tissues, including the mucosal level change of immediately placed implants with either immediate provisionalization or delayed restoration remained stable and did not differ between the groups in the intermediate term. The final crown angle, influenced by implant position and abutment angle, might be associated with mucosal margin level change.