Implementing microfluidic flow device model in utilizing dural substitutes as pulp capping materials for vital pulp therapy.

Autor:	Lee MY; Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Seoul, Republic of Korea., Yoon HW; Department of Conservative Dentistry and Oral Science Research Center, Gangnam Severance Hospital, Yonsei University College of Dentistry, Seoul, Republic of Korea., Kim SI; Department of Conservative Dentistry and Oral Science Research Center, College of Dentistry, Yonsei University, Seoul, Republic of Korea., Kwon JS; Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Seoul, Republic of Korea.; BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Republic of Korea., Shin SJ; Department of Conservative Dentistry and Oral Science Research Center, Gangnam Severance Hospital, Yonsei University College of Dentistry, Seoul, Republic of Korea.
Jazyk:	angličtina
Zdroj:	Biofabrication [Biofabrication] 2024 Aug 21; Vol. 16 (4). Date of Electronic Publication: 2024 Aug 21.
DOI:	10.1088/1758-5090/ad6cf8
Abstrakt:	Vital pulp therapy (VPT) has gained prominence with the increasing trends towards conservative dental treatment with specific indications for preserving tooth vitality by selectively removing the inflamed tissue instead of the entire dental pulp. Although VPT has shown high success rates in long-term follow-up, adverse effects have been reported due to the calcification of tooth canals by mineral trioxide aggregates (MTAs), which are commonly used in VPT. Canal calcification poses challenges for accessing instruments during retreatment procedures. To address this issue, this study evaluated the mechanical properties of dural substitute intended to alleviate intra-pulp pressure caused by inflammation, along with assessing the biological responses of human dental pulp stem cells (hDPSCs) and human umbilical vein endothelial cells (HUVECs), both of which play crucial roles in dental pulp. The study examined the application of dural substitutes as pulp capping materials, replacing MTA. This assessment was conducted using a microfluidic flow device model that replicated the blood flow environment within the dental pulp. Computational fluid dynamics simulations were employed to ensure that the fluid flow velocity within the microfluidic flow device matched the actual blood flow velocity within the dental pulp. Furthermore, the dural substitutes (Biodesign; BD and Neuro-Patch; NP) exhibited resistance to penetration by 2-hydroxypropyl methacrylate (HEMA) released from the upper restorative materials and bonding agents. Finally, while MTA increased the expression of angiogenesis-related and hard tissue-related genes in HUVEC and hDPSCS, respectively, BD and NP did not alter gene expression and preserved the original characteristics of both cell types. Hence, dural substitutes have emerged as promising alternatives for VPT owing to their resistance to HEMA penetration and the maintenance of stemness. Moreover, the microfluidic flow device model closely replicated the cellular responses observed in live pulp chambers, thereby indicating its potential use as an in vivo testing platform. (© 2024 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.)
Databáze:	MEDLINE
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