Influence of superstracture materials for resonance frequency analysis

超结构材料对共振频率分析的影响

• 批准号: 11671956
• 负责人: HAGIWARA Yoshiyuki
• 金额: $ 2.24万
• 依托单位: Nihon-University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11671956/
• 关键词: Resonance frequency analysis; FFT Analyzer; Fast Fourier Transform; Vibration time; Frequency power spectrum; Implant; Abutment; Superstructure; 振動時間; Osseointegration; 上部構造物; 周波数分析

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

实现和维持种植体稳定性是骨整合种植体长期积极结果的先决条件，因此，种植体稳定性是临床成功的关键，目前确定种植体稳定性和骨整合的临床方法相对粗糙，可能需要敲击固定装置和基台。 Periotest 很有价值，但需要标准化技术来确保可重复性。本研究旨在研究使用共振频率分析的测试方法的应用。对影响基台类型、扭矩力和不同上部结构材料的种植体稳定性和冲击传递进行定量测量。螺纹型种植体（3i；直径 3.75 毫米，长度 13. 0 毫米）安装在圆锥形模具中。和 UCLA 基台以 5、10、20 和 32 Ncm 紧固扭矩力连接到种植体，并固定金冠，并固定振动模式、振动时间和频率功率谱。通过安装在牙冠上的加速拾取传感器和快速傅里叶变换分析仪进行测量，获得了较高紧力的相同趋势，证明了短振动时间和高峰值频率区域显示了基台紧固扭矩力的显着影响。基台形状和上部结构接合类型（节段和非节段）对共振频率的影响 上部结构材料对共振频率的影响分析表明，锥形牙冠上的 PFM、Estenia 和冷固化树脂冠之间没有显着差异。但就 UCLA 基台而言，采用冷固化树脂的 PFM 和采用冷固化树脂的 Estenia 的上部结构材料的振动时间和频率峰值频谱存在显着差异。从临床角度来看，对于紧咬合、功能障碍和群功能咬合病例，应考虑 UCLA 基台的材料选择。