陶瓷界面的射线照相、微机断层扫描和光学相干断层扫描研究

C. Sinescu, M. Negruțiu, C. Ionita, F. Topala, E. Petrescu, R. Romînu, D. Pop, L. Marșavina, R. Negru, A. Bradu, M. Rominu, A. Podoleanu
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引用次数: 3

摘要

金属陶瓷冠和部分固定修复体的影像学研究是当今牙科研究的一个重要课题。此时,在牙科诊所,在将金属陶瓷冠或桥置入口腔之前很难甚至不可能对其进行评估。陶瓷断裂的可能性是由于细小的断裂线或美观层内的材料缺陷。材料与方法:本研究采用1300 nm的x线摄影(Rx)、显微计算机断层扫描(MicroCT)和光学相干断层扫描(OCT)对25个金属陶瓷冠和固定部分修复体进行了研究。OCT系统包含两个干涉仪和一个扫描仪。对于每个事件分析,获得由100片组成的卡。这些切片被用来获得陶瓷界面的三维模型。结果:RX和MicroCT是非常强大的仪器,可以很好地表征牙结构。金属结构的反射会影响金属冠桥的评价,因此对其进行观测是非常重要的。OCT调查可以在需要的时候提供重要的信息,完成对牙构的影像学评价。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Radiographic, microcomputer tomography, and optical coherence tomography investigations of ceramic interfaces
Imagistic investigation of the metal-ceramic crowns and fixed partial prostheses represent a very important issue in nowadays dentistry. At this time, in dental office, it is difficult or even impossible to evaluate a metal ceramic crown or bridge before setting it in the oral cavity. The possibilities of ceramic fractures are due to small fracture lines or material defects inside the esthetic layers. Material and methods: In this study 25 metal ceramic crowns and fixed partial prostheses were investigated by radiographic method (Rx), micro computer tomography (MicroCT) and optical coherence tomography (OCT) working in Time Domain, at 1300 nm. The OCT system contains two interferometers and one scanner. For each incident analysis a stuck made of 100 slices was obtain. These slices were used in order to obtain a 3D model of the ceramic interface. Results: RX and MicroCT are very powerful instruments that provide a good characterization of the dental construct. It is important to observe the reflections due to the metal infrastructure that could affect the evaluation of the metal ceramic crowns and bridges. The OCT investigations could complete the imagistic evaluation of the dental construct by offering important information when it is need it.
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