Measurement of the remaining dentin thickness using optical coherence tomography for crown preparation
Measurement of the remaining dentin thickness using optical coherence tomography for crown preparation
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DOI：
10.4012/dmj.2013-303
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发表时间：
2014-06-01
影响因子：
2.5
通讯作者：
Miura, Hiroyuki
中科院分区：
文献类型：
--
作者：
Fujita, Rie;Komada, Wataru;Miura, Hiroyuki
本研究旨在利用光学相干断层扫描技术（OCT）研究牙髓附近牙本质的最大深度成像和光学特性，并探讨测量剩余牙本质厚度（RDT）的可能性。使用人类第三磨牙。在实验1中，制备牙尖牙本质块（0.50-mm至1.75-mm厚度）。使用OCT扫描每个样本。可以获得厚度为1.00 mm或更小的所有样本的OCT图像。实验2制备了0.50 mm和1.00 mm RDT的牙本质-牙髓复合体切片。使用OCT和微型计算机断层扫描对每个标本进行扫描，并进行比较。0.50 mm RDT的OCT图像长度变化率显著低于1.00 mm RDT。在本研究的限制范围内，OCT可有效测量1.00 mm或更小的RDT并防止牙髓损伤，同时考虑OCT图像的长度变化率作为变量。
This study aimed to investigate the maximum depth imaging and optical properties of the dentin near the pulp by using optical coherence tomography (OCT) and to explore the possibility of measuring the remaining dentin thickness (RDT). Human third molars were used. In experiment 1, the cuspal dentin blocks (0.50-mm to 1.75-mm thickness) were prepared. Each specimen was scanned using OCT. OCT images could be obtained for all specimens with 1.00-mm or less thicknesses. In experiment 2, dentin-pulp complex slices (0.50-mm and 1.00-mm RDT) were prepared. Each specimen was scanned using OCT and micro-computed tomography, and compared. The resulting length change rates of OCT images for the 0.50-mm RDTs were significantly lower than those of the 1.00-mm RDTs. Within the limitations of this study, OCT was effective for measuring the 1.00-mm or less RDT and preventing pulpal injury, while considering the length change rate of OCT image as a variable.