使用光学相干断层扫描技术对正畸托槽去除后牙釉质微裂纹进展的三维评估

Three-Dimensional Assessment of Dental Enamel Microcrack Progression After Orthodontic Bracket Debonding Using Optical Coherence Tomography.

作者信息

Hamdan Ahmed Haj, Saleah Sm Abu, Seong Daewoon, Ravichandran Naresh Kumar, Wijesinghe Ruchire Eranga, Han Sangyeob, Kim Jeehyun, Jeon Mansik, Park Hyo-Sang

机构信息

Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu 41940, Republic of Korea.

ICT Convergence Research Center, Kyungpook National University, Daegu 41566, Republic of Korea.

出版信息

J Funct Biomater. 2024 Dec 30;16(1):7. doi: 10.3390/jfb16010007.

DOI:10.3390/jfb16010007

PMID:39852563

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11766427/

Abstract

The current study aimed to quantify the length progression of enamel microcracks (EMCs) after debonding metal and ceramic brackets, implementing OCT as a diagnostic tool. The secondary objectives included a three-dimensional assessment of EMC width and depth and the formation of new EMCs. OCT imaging was performed on 16 extracted human premolars before bonding and after debonding. Debonding was conducted with a universal Instron machine, with ARI values recorded. Additionally, 2D and 3D OCT images were employed to detect EMC formation and progression. Enface images quantified the length, width, and number of EMCs, and the length and width were analyzed using Image J (1.54f) and MATLAB (R2014b), respectively. Sagittal cross-sectional images were used for EMC depth analysis. A paired -test showed significant differences in the length, width, and number of EMCs after debonding (-value < 0.05), while the Wilcoxon non-parametric test indicated significant EMC depth changes (-value < 0.05). No significant results were identified for the EMC number in ceramic brackets and EMC depth in metal brackets. Three-dimensional OCT imaging monitored existing EMCs at higher risk of progression and detected new EMCs following orthodontic bracket debonding. This study provides novel insights into EMC progression regarding the length, width, depth, and number after debonding.

摘要

本研究旨在通过将光学相干断层扫描（OCT）作为一种诊断工具，来量化去除金属和陶瓷托槽后牙釉质微裂纹（EMC）的长度变化。次要目标包括对EMC宽度和深度进行三维评估以及新EMC的形成情况。在粘结前和去除托槽后，对16颗拔除的人类前磨牙进行OCT成像。使用万能英斯特朗材料试验机进行托槽去除，并记录粘结失败率（ARI）值。此外，利用二维和三维OCT图像检测EMC的形成和变化情况。表面图像量化了EMC的长度、宽度和数量，长度和宽度分别使用Image J（1.54f）和MATLAB（R2014b）进行分析。矢状面横截面图像用于EMC深度分析。配对t检验显示去除托槽后EMC的长度、宽度和数量存在显著差异（p值<0.05），而Wilcoxon非参数检验表明EMC深度有显著变化（p值<0.05）。对于陶瓷托槽中的EMC数量和金属托槽中的EMC深度，未发现显著结果。三维OCT成像监测了具有较高进展风险的现有EMC，并在正畸托槽去除后检测到了新的EMC。本研究为去除托槽后EMC在长度、宽度、深度和数量方面的变化提供了新的见解。