Assessment of interfacial defects at composite restorations by swept source optical coherence tomography
Assessment of interfacial defects at composite restorations by swept source optical coherence tomography
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DOI：
10.1117/1.jbo.18.7.076018
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发表时间：
2013-07-01
影响因子：
3.5
通讯作者：
Haak, Rainer
中科院分区：
文献类型：
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作者：
Park, Kyung-Jin;Schneider, Hartmut;Haak, Rainer
在牙科临床实践中，通过目视检查或其他已建立的诊断方法来检测和评估粘合剂修复处的界面粘合剂缺陷通常是困难的，甚至是不可能的。然而，非破坏性光学相干断层扫描（OCT）可以提供一个更好的图片在这种诊断方案。本研究的目的是评估扫频光源OCT（SS-OCT）的适用性，在复合材料的界面缺陷的非破坏性评估和复合材料内的内聚缺陷的评价。将10个未进行清洁的V类复合材料涂层作为确认对象，并使用中心波长为1325 nm的SS-OCT检查复合材料层之间的界面间隙、空气截留和缺陷的频率。使用光学显微镜检查固有结构。SS-OCT在釉质界面检测到79.5% +/- 1.8%的总间隙长度，在牙本质界面检测到70.9% +/- 0.4%。此外，还显示了复合材料涂层中的缺陷结构。结果表明，OCT成像具有潜在的非破坏性评估复合材料的界面适应性和检测层状复合材料中的内部缺陷。(C)作者。由SPIE在知识共享署名3.0未移植许可下发布。分发或复制本作品的全部或部分要求完全归属于原始出版物，包括其DOI。
In clinical dental practice, it is often difficult or even impossible to detect and assess interfacial adhesive defects at adhesive restorations by means of visual inspection or other established diagnostic methods. However, nondestructive optical coherence tomography (OCT) may provide a better picture in this diagnostic scenario. The aim of this study was to evaluate the suitability of swept source OCT (SS-OCT) for the nondestructive assessment of interfacial deficiencies at composite restorations and the evaluation of cohesive defects within composite material. Ten class V composite restorations that were not adhesively luted were taken as validation objects and examined for frequency of interfacial gaps, air entrapments, and defects between composite layers using SS-OCT with a 1325-nm center wavelength. Light microscopy was used to inspect for inherent structures. SS-OCT detected 79.5% +/- 1.8% of the total gap lengths at the enamel interface and 70.9% +/- 0.4% at the dentin interface. Additionally, defective structures in composite restorations were displayed. It was shown that OCT imaging has the potential to nondestructively assess the interfacial adaptation of composite restorations and to detect internal defects in the layered composite material. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.