Gehrke Sergio Alexandre, da Silva Neto Ulisses Tavares, Rossetti Paulo Henrique Orlato, Watinaga Sidney Eiji, Giro Gabriela, Shibli Jamil Awad
Biotecnos Research Center, Santa Maria, Brazil.
Catholic University of Uruguay, Montevideo, Uruguay.
Clin Oral Implants Res. 2016 May;27(5):577-82. doi: 10.1111/clr.12624. Epub 2015 Jun 3.
The present study measured implant stability quotient (ISQ) values at three different time points after surgical procedures to compare whether the stability values differed between implants placed in fresh extraction sockets versus healed alveolar sites.
To measure implant stability, resonance frequency analysis (RFA) was performed in 77 patients (53 women, 24 men) with a total of 120 dental implants. These implants were divided into two groups: Group 1 included 60 implants in healed alveolar sites (22 in the maxilla, 38 in the mandible), and Group 2 included 60 implants in fresh sockets (41 in the maxilla, 19 in the mandible). Implant stability was measured immediately at implant placement (baseline), 90, and 150 days later. Statistical analysis was made using a multivariate regression linear model at implant level (α = 0.05).
Overall, the means and standard deviations of the ISQ values were 62.7 ± 7.14 (95% confidence interval [CI], 39-88) at baseline, 70.0 ± 6.22 (95% CI, 46-88) at 90 days, and 73.4 ± 5.84 (95% CI, 58-88) at 150 days. In Group 1, the ISQs ranged between 64.3 ± 6.20 and 75.0 ± 5.69, while in Group 2, presented lower values that ranged between 61.2 ± 8.09 and 71.9 ± 5.99 (P = 0.002). Anatomic location and times periods were the only identified variables with an influence on ISQ values at implant level (P < 0.0001).
The stabilities of the implants placed in the fresh sockets and in healed sites exhibited similar evolutions in ISQ values and thus osseointegration; however, the implants in the healed alveolar sites exhibited superior values at all time points.
本研究在手术操作后的三个不同时间点测量种植体稳定性商数（ISQ）值，以比较植入新鲜拔牙窝与愈合牙槽嵴部位的种植体之间的稳定性值是否存在差异。
为测量种植体稳定性，对77例患者（53名女性，24名男性）共120颗牙种植体进行了共振频率分析（RFA）。这些种植体分为两组：第1组包括60颗植入愈合牙槽嵴部位的种植体（上颌22颗，下颌38颗），第2组包括60颗植入新鲜拔牙窝的种植体（上颌41颗，下颌19颗）。在种植体植入时（基线）、90天和150天后立即测量种植体稳定性。在种植体水平使用多元回归线性模型进行统计分析（α = 0.05）。
总体而言，ISQ值的均值和标准差在基线时为62.7±7.14（95%置信区间[CI]，39 - 88），90天时为70.0±6.22（95%CI，46 - 88），150天时为73.4±5.84（95%CI，58 - 88）。在第1组中，ISQ值在64.3±6.20至75.0±5.69之间，而在第2组中，值较低，在61.2±8.09至71.9±5.99之间（P = 0.002）。解剖位置和时间段是在种植体水平上唯一确定的对ISQ值有影响的变量（P < 0.0001）。
植入新鲜拔牙窝和愈合部位的种植体在ISQ值及骨整合方面表现出相似的变化；然而，愈合牙槽嵴部位的种植体在所有时间点的数值均更高。
