Dental composite is the most used aesthetic restorative biomaterial worldwide. However, it undergoes polymerization shrinkage that could lead to loss of the interfacial seal between tooth and resin in some circumstances. This demands high-resolution imaging technologies to detect these defects. This study carried out a comparison between microcomputed tomography (micro-CT; Shimadzu, Japan) and swept-source optical coherence tomography (SS-OCT; Santec, Japan) in the detection of marginal adaptation defects at the tooth-resin interface. Unlike in micro-CT, it was possible to outline interfacial gaps along with tooth-resin interfaces with SS-OCT, which was attributed to the Fresnel diffraction of light. This in-vitro comparison demonstrates SS-OCT has great potential in dental imaging to effectively assess dental composite adaptation and marginal defects when high resolution is desired in real-time. This article is protected by copyright. All rights reserved.

中文翻译：

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micro-CT与OCT在边缘复合适应成像中的光学比较；观察性研究

牙科复合材料是全球使用最多的美学修复生物材料。然而，它会发生聚合收缩，在某些情况下可能导致牙齿和树脂之间的界面密封丧失。这需要高分辨率成像技术来检测这些缺陷。本研究比较了微型计算机断层扫描 (micro-CT; Shimadzu, Japan) 和扫描源光学相干断层扫描 (SS-OCT; Santec, Japan) 在牙齿-树脂界面边缘适应缺陷的检测。与显微 CT 不同，可以使用 SS-OCT 勾勒出界面间隙以及牙齿-树脂界面，这归因于光的菲涅耳衍射。这种体外比较表明 SS-OCT 在牙科成像方面具有巨大潜力，可以在需要实时高分辨率时有效评估牙科复合材料的适应性和边缘缺陷。本文受版权保护。版权所有。