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牙髓病学中的三维打印牙齿：微计算机断层扫描研究的新方案

Three-Dimensional Printed Teeth in Endodontics: A New Protocol for Microcomputed Tomography Studies.

作者信息

Reis Tiago, Barbosa Cláudia, Franco Margarida, Silva Ruben, Alves Nuno, Castelo-Baz Pablo, Martín-Cruces Jose, Martín-Biedma Benjamín

机构信息

Endodontics and Restorative Dentistry Unit, School of Medicine and Dentistry, University of Santiago de Compostela, 15701 Santiago de Compostela, Spain.

Centre for Rapid and Sustainable Product Development (CDRSP), Polytechnic University of Leiria, 2411-901 Leiria, Portugal.

出版信息

Materials (Basel). 2024 Apr 19;17(8):1899. doi: 10.3390/ma17081899.

DOI:10.3390/ma17081899
PMID:38673256
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11052238/
Abstract

This study aimed to describe a support material removal protocol (SMRP) from inside the root canals of three-dimensional printed teeth (3DPT) obtained by the microcomputed tomography (microCT) of a natural tooth (NT), evaluate its effectiveness by comparing the 3DPT to NT in terms of internal anatomy and behaviour toward endodontic preparation, and evaluate if 3DPT are adequate to assess the differences between two preparation systems. After the SMRP, twenty 3DPT printed by PolyJet™ were microCT scanned before preparation and thereafter randomly assigned into two groups (n = 10). One group and NT were prepared using ProTaper Gold (PTG), and the other group with Endogal (ENDG). MicroCT scans were carried out after preparation, and the volume increase, volume of dentin removed, centroids, transportation, and unprepared areas were compared. For the parameters evaluated, no significant differences were found between the 3DPT and NT before and after preparation ( > 0.05), and no significant differences were found between the 3DPT PTG group and the 3DPT ENDG group ( > 0.05). It can be concluded that the SMRP described is effective in removing the support material SUP706B™. PolyJet™ is adequate for printing 3DPT. Furthermore, 3DPT printed with high-temperature RGD525™ have similar behaviour during endodontic preparation with PTG as the NT, and 3DPT can be used to compare two preparation systems.

摘要

本研究旨在描述一种从通过天然牙（NT）的显微计算机断层扫描（microCT）获得的三维打印牙（3DPT）根管内部去除支撑材料的方案（SMRP），通过在内部解剖结构以及对根管预备的反应方面将3DPT与NT进行比较来评估其有效性，并评估3DPT是否足以评估两种预备系统之间的差异。在进行SMRP后，对通过PolyJet™打印的20颗3DPT在预备前进行显微CT扫描，然后随机分为两组（n = 10）。一组和NT使用ProTaper Gold（PTG）进行预备，另一组使用Endogal（ENDG）进行预备。预备后进行显微CT扫描，并比较体积增加、去除的牙本质体积、质心、偏移以及未预备区域。对于所评估的参数，在预备前后3DPT与NT之间未发现显著差异（P>0.05），并且在3DPT PTG组和3DPT ENDG组之间也未发现显著差异（P>0.05）。可以得出结论，所描述的SMRP在去除支撑材料SUP706B™方面是有效的。PolyJet™足以用于打印3DPT。此外，用高温RGD525™打印的3DPT在根管预备过程中与NT使用PTG时具有相似的表现，并且3DPT可用于比较两种预备系统。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/9ddbcb00ab3d/materials-17-01899-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/49ced8d31d9d/materials-17-01899-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/708ca339954f/materials-17-01899-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/605552180d01/materials-17-01899-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/7a0fc6325be6/materials-17-01899-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/d8fa464f8b05/materials-17-01899-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/58c69743164f/materials-17-01899-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/9ddbcb00ab3d/materials-17-01899-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/49ced8d31d9d/materials-17-01899-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/708ca339954f/materials-17-01899-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/605552180d01/materials-17-01899-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/7a0fc6325be6/materials-17-01899-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/d8fa464f8b05/materials-17-01899-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/58c69743164f/materials-17-01899-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bb22/11052238/9ddbcb00ab3d/materials-17-01899-g007.jpg

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本文引用的文献

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