Department of Oral and Maxillo-facial Sciences, "Sapienza" University of Rome, Rome, Italy.
Department of Oral and Maxillo-facial Sciences, "Sapienza" University of Rome, Rome, Italy.
Int J Oral Maxillofac Surg. 2020 May;49(5):649-654. doi: 10.1016/j.ijom.2019.10.020. Epub 2019 Nov 15.
The aim of this study was to evaluate the effectiveness of loading at 2 months after the surgical placement of implants. A tapered implant was used. Implant stability was determined using resonance frequency analysis at implant insertion (T0; primary stability), after 2 months (T1), and at the 6-month follow-up (T2). Descriptive statistics and the t-test were used. Significance was at P ≤ 0.05. A total of 268 implants were inserted in 142 patients. No patient dropped out and no implant had failed at the 6-month follow-up. The mean implant stability quotient value (ISQ) increased over time, with a statistically non-significant difference for T0 vs. T1 (P = 0.08) and a statistically significant difference for T1 vs. T2 (P = 0.0018) and T0 vs. T2 (P = 0.000). Only 99 implants, characterized by an extremely high mean primary stability value (80.34), did not have a recorded increase in ISQ at T1. A 2-month healing period allowed the implant to achieve secondary stability, confirming the effectiveness of the loading protocol at 2 months.
本研究旨在评估种植体植入后 2 个月负载的效果。使用了一种锥形种植体。在种植体植入时（T0；初级稳定性）、2 个月后（T1）和 6 个月随访时（T2），使用共振频率分析来确定种植体稳定性。采用描述性统计和 t 检验。P 值≤0.05 为有统计学意义。共在 142 名患者中植入了 268 个种植体。没有患者脱落，也没有种植体在 6 个月随访时失败。种植体稳定性测量值（ISQ）随时间增加，T0 与 T1 之间无统计学差异（P=0.08），T1 与 T2 之间和 T0 与 T2 之间有统计学差异（P=0.0018 和 P=0.000）。只有 99 个种植体，其平均初始稳定性值极高（80.34），在 T1 时未记录到 ISQ 增加。2 个月的愈合期使种植体获得了继发性稳定性，证实了 2 个月时负载方案的有效性。
