Stability of implants placed in fresh sockets versus healed alveolar sites: Early findings

作者：Gehrke Sergio Alexandre^*; da Silva Neto Ulisses Tavares; Orlato Rossetti Paulo Henrique; Watinaga Sidney Eiji; Giro Gabriela; Shibli Jamil Awad

来源：Clinical Oral Implants Research, 2016, 27(5): 577-582.

DOI：10.1111/clr.12624

• dental implant
• fresh extraction sockets
• implant stability
• longitudinal studies
• resonance frequency analysis

ObjectivesThe 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.
Materials and methodsTo 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 150days later. Statistical analysis was made using a multivariate regression linear model at implant level (=0.05).
ResultsOverall, the means and standard deviations of the ISQ values were 62.77.14 (95% confidence interval [CI], 39-88) at baseline, 70.0 +/- 6.22 (95% CI, 46-88) at 90days, and 73.4 +/- 5.84 (95% CI, 58-88) at 150days. 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).
ConclusionsThe 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.

• 出版日期2016-5