Quesada-García Ma Pilar, Prados-Sánchez Estrella, Olmedo-Gaya Ma Victoria, Muñoz-Soto Esther, Vallecillo-Capilla Manuel, Bravo Manuel
Department of Oral Surgery and Maxillofacial Surgery, School of Dentistry, University of Granada, Granada, Spain.
J Oral Maxillofac Surg. 2012 Dec;70(12):2761-7. doi: 10.1016/j.joms.2012.08.006. Epub 2012 Sep 23.
The objective was to analyze the factors that influence the stability of dental implants at 12 weeks after implant placement as measured by resonance frequency analysis using the Osstell system.
This prospective clinical study was performed in 235 implants placed in 93 patients at the Oral Surgery and Implantology Clinic of the University of Granada. The gathered predictor variables were grouped into patient variables, implant variables, operative variables, and baseline implant stability quotient (ISQ). All variables were analyzed in a multivariate model to determine their influence on the ISQ score at 12 weeks after implant insertion (outcome variable). SUDAAN software was used for clustered sampling (multiple implants in patients).
Two hundred thirty-five dental implants were placed in 47 men (50.5%) and 46 women (49.5%; total, 93 patients; mean age, 52.13 ± 11.23 years; range, 27 to 76 years). No association was found between the patient variables and the ISQ values at 12 weeks. Among implant variables, worse ISQ values at 12 weeks were observed for a narrow diameter (P < .001) and maxillary implants (P = .006). Among surgical technique variables, the use of plasma rich in growth factors (P = .011) showed the best ISQ values at 12 weeks.
The diameter and localization of implants and the application of plasma rich in growth factors influenced the stability of implants measured at 12 weeks of wound healing. Accordingly, stability was less with a narrower implant diameter and maxillary localization and greater with implants humidified with plasma rich in growth factors.
本研究旨在分析种植体植入后12周时，通过使用Osstell系统的共振频率分析来测量影响牙种植体稳定性的因素。
本前瞻性临床研究在格拉纳达大学口腔外科和种植科对93例患者植入的235颗种植体进行。收集的预测变量分为患者变量、种植体变量、手术变量和基线种植体稳定性商数（ISQ）。所有变量在多变量模型中进行分析，以确定它们对种植体植入后12周时ISQ评分（结果变量）的影响。使用SUDAAN软件进行聚类抽样（患者体内有多颗种植体）。
共植入235颗牙种植体，其中男性47例（50.5%），女性46例（49.5%；共93例患者；平均年龄52.13±11.23岁；范围27至76岁）。未发现患者变量与12周时的ISQ值之间存在关联。在种植体变量中，直径较窄的种植体（P < .001）和上颌种植体（P = .006）在12周时的ISQ值较差。在手术技术变量中，使用富含生长因子的血浆（P = .011）在12周时显示出最佳的ISQ值。
种植体的直径、位置以及富含生长因子的血浆的应用会影响伤口愈合12周时所测量的种植体稳定性。因此，种植体直径较窄和位于上颌时稳定性较低，而用富含生长因子的血浆处理的种植体稳定性较高。
