Abdelaziz Marwa, Zuluaga Andrés F, Betancourt Francesco, Fried Daniel, Krejci Ivo, Bortolotto Tissiana
Division of Cariology and Endodontology; University Clinic of Dental Medicine, Geneva, Switzerland.
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, San Francisco.
Proc SPIE Int Soc Opt Eng. 2020 Feb;11217. doi: 10.1117/12.2544684. Epub 2020 Feb 19.
Internal adaptation of adhesive restorations affects their longevity. In a clinical setting, the dentists use visual and tactile examination to evaluate marginal adaptation, while radiographs provide somewhat reliable information about adaptation or secondary caries present. For class V restorations located on the vestibular (buccal) surfaces, none of the tools available can provide any information about the internal adaptation or the presence of secondary caries. OCT has been proven to be a useful tool for non-destructive assessment of internal adaptation of adhesive restorations. This paper is evaluating the use of a new high-resolution handheld OCT prototype with a pen-shaped intraoral tip and an imaging depth of 8mm to examine the internal adaptation and the presence of demineralization under resin restorations on the vestibular dentin surface. The Axsun OCT system helped evaluate the internal adaptation of composite restorations, differentiate between healthy and demineralised dentin, adhesive, and restoration layers. OCT provided a unique visualization and characterization of internal structures as well as non-contact assessment of marginal adaptation.
粘结修复体的内部适应性会影响其使用寿命。在临床环境中，牙医通过视觉和触觉检查来评估边缘适应性，而X光片能提供一些关于适应性或继发性龋的可靠信息。对于位于前庭（颊）面的V类修复体，现有的任何工具都无法提供有关内部适应性或继发性龋存在情况的任何信息。光学相干断层扫描（OCT）已被证明是一种用于无损评估粘结修复体内部适应性的有用工具。本文正在评估一种新型高分辨率手持式OCT原型的使用情况，该原型具有笔形口腔内探头，成像深度为8毫米，用于检查前庭牙本质表面树脂修复体下方的内部适应性和脱矿情况。Axsun OCT系统有助于评估复合树脂修复体的内部适应性，区分健康牙本质和脱矿牙本质、粘结剂层和修复体层。OCT提供了内部结构的独特可视化和特征描述，以及边缘适应性的非接触评估。
