实时成像和大量填充和常规树脂复合材料内部空隙形成的定量分析:一个OCT评估
Xinyu Yang1, Yuhao Yang1, Yingji Li2
1Department of Cariology & Endodontics, The Affiliated Stomatological Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, Jiangxi, China; Jiangxi Province Key Laboratory of Oral Biomedicine, Nanchang 330006, Jiangxi, China.
Photodiagnosis and photodynamic therapy
|April 27, 2024
概括
光学连贯断层扫描 (OCT) 能够有效地检测牙科复合材料中的微泄漏. 与传统树脂相比,散装树脂,特别是 Surefil SDR Flow +,在热循环后的空隙形成较少.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料研究 生物材料研究
- 恢复性牙科 恢复性牙科
背景情况:
- 在牙科修复中评估微泄漏对于长寿至关重要.
- 现有的微泄漏评估方法存在局限性.
- 光学连贯性断层扫描 (OCT) 提供实时的定量差距分析.
研究的目的:
- 用OCT量化分析大量填充和常规树脂复合材料的内部空隙形成.
- 为了比较不同类型的树脂复合材料的实时差距形成和微漏漏易感性.
- 评估热循环对各种牙科修复材料中缺口形成的影响.
主要方法:
- 在50个提取的牙中,使用常规 (Filtek Z350 XT) 或散装填充树脂 (X-tra fil,Filtek散装填充后部修复剂,Surefil SDR Flow +,Filtek流动修复剂) 修复了I类腔.
- 在光固化过程中进行了实时OCT成像,随后进行了固化后扫描,以测量初始差距百分比 (G1 %).
- 样品经历了5000次热循环 (5°C-55°C),随后进行了OCT扫描,以确定循环后差距百分比 (G2%) 和差距百分比变化 (ΔG%).
主要成果:
- 两组之间没有观察到初始差距形成 (G1%) 的显著差异.
- 在热循环后,常规树脂 (Filtek Z350 XT) 显示最高的G2%,而Surefil SDR Flow +显示最低.
- Surefil SDR Flow + 在热循环后,间隙百分比 (ΔG%) 的变化最小,表明优越的边际完整性.
结论:
- 光学连贯断层扫描 (OCT) 是在牙科修复中实时检测微泄漏的宝贵工具.
- 热循环显著影响传统树脂复合材料,导致间隙形成的增加.
- 苏瑞菲尔SDR Flow + (散装树脂) 在初始和老化后都显示出有前途的耐微泄漏性.
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