Influence of superstracture materials for resonance frequency analysis

实现和维持种植体的稳定性是骨整合种植体长期良好预后的先决条件。因此，种植体的稳定性是临床成功的关键。目前可用的临床方法来确定种植体的稳定性和骨整合是相对粗糙的，可能需要使用Periotest撞击固定装置和基台。x光片是有价值的，但标准化的技术是必要的，以确保可重复性。本研究旨在研究应用共振频率分析测试方法定量测量基台类型、扭矩和不同上部结构材料对种植体稳定性和冲击传递的影响。螺纹型种植体(3i； 3.75 mm直径，13。0毫米长)安装在模具石。分别以5、10、20、32 Ncm的紧固力矩与种植体连接锥形基牙和UCLA基牙，并固定金冠。通过连接在表冠上的加速拾取传感器和快速傅立叶变换分析仪测量了振动的时间和频率功率谱。锥形基台和UCLA基台具有较高的紧力趋势，且振动时间短，峰值频率面积大。方差分析结果表明，基台紧固力矩、基台形状类型和上部结构接合（节段和非节段）对共振频率有显著影响。上层结构材料对共振频率分析的影响表明，PFM、Estenia和冷固化树脂冠对锥形基台的振动时间和频率峰值谱无显著差异。但对于UCLA基台，用于共振频率分析的上部结构材料中，冷固化树脂的PFM与冷固化树脂的Estenia在振动时间和频率峰值谱上存在显著差异。综上所述，在咬合紧密、功能不全和群功能咬合的情况下，应考虑UCLA基牙的材料选择。少

Achievement and maintenance of implant stability are prerequisites for long- term positive outcomes for osseointegrated implants. Thus, implant stability is the key to clinical success. Currently available clinical methods to determine implant stability and osseointegration are relatively crude and may entail percussing a fixture and abutment with Periotest. Radiographs are of value, but a standardised technique is necessary to ensure repeatability. This investigation was designed to study the application of a test method using resonance requency analysis to make quantitative measurements of the stability and shock transmission to the implant body influenced abutment type, torque force and different materials with superstructure.A threaded type implant (3i ; 3.75 mm diameter, 13. 0 mm length) was mounted in die stone. Conical and UCLA abutments were connected to implant with 5, 10, 20 and 32 Ncm fastening torque force and gold crowns were also affixed. The vibration pattern, vibration … More time and frequency power spectrum were measured by an accelerated pick up sensor which was attached to the crown and Fast Fourier Transform Analyzer. Conical and UCLA abutments obtained same tendency for higher tight force demonstrated short vibration time and high peak frequency area. ANOVA shows significant effects of abutment fastening torque force, types of abutment shape and superstructure engagement (segment and non-segment) for the resonance frequency. Influence of superstructure materials for resonance frequency analysis demonstrated no significant different between PFM, Estenia and cold cure resin crowns on the conical abutment, for vibration time and frequency peak spectrum. But in case of UCLA abutment, superstructure materials for resonance frequency analysis was significantly difference between in PFM with cold cure resin and Estenia with cold cure resin for vibration time and frequency peak spectrum. In concluded the clinical point of view, material selection for the UCLA abutment should be considered in tight bite, parafunction and group functioned occlusion cases. Less