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Effects of a novel light-curable material on odontoblastic differentiation of human dental pulp cells.

Authors :
Lee, B.‐N.
Lee, B.‐G.
Chang, H.‐S.
Hwang, Y.‐C.
Hwang, I.‐N.
Oh, W.‐M.
Source :
International Endodontic Journal; May2017, Vol. 50 Issue 5, p464-471, 8p, 2 Color Photographs, 2 Graphs
Publication Year :
2017

Abstract

Aim To assess the biological effects, including odontoblastic differentiation of a novel light-curable material (TheraCal), on human dental pulp cells ( hDPCs). Methodology The hDPCs were isolated from freshly extracted, caries-free third molars. Ten discs of TheraCal and MTA (8 mm in diameter and 3 mm in height) were incubated in α-minimum essential medium (α- MEM) and the supernatant collected. Viability of hDPCs in response to TheraCal and MTA was measured using the WST-1 assay. RT- PCR and real-time PCR were used to detect the gene expression of dentine sialophosphoprotein ( DSPP) and dentine matrix protein-1 ( DMP-1). ALP staining and Alizarin red S staining were used to evaluate the expression of alkaline phosphatase ( ALP) and mineralization behaviour. One-way analysis of variance and Tukey's post hoc test were used to determine the statistically significant differences as a result of the variation in test materials ( P < 0.05). Results The effects of TheraCal and MTA on cell viability were similar except at the highest concentration. The mRNA level of DSPP increased significantly in the MTA group relative to the control at day 1 and 3 ( P < 0.05). Also, the mRNA level of DSPP increased significantly in the TheraCal group relative to the control at day 3 ( P < 0.05). The increased mRNA level of DMP-1 was 2.5-fold and 2.3-fold each in the MTA and TheraCal groups relative to the control ( P < 0.05). Cells exposed to MTA exhibited a 1.4-fold increase of ALP staining relative to control ( P < 0.05). In the mineralization assay, increased calcium nodule formation was twofold and 1.3-fold each in the MTA and TheraCal groups compared to the control ( P < 0.05). Conclusions TheraCal and MTA had the ability to induce odontoblastic differentiation and mineralization of hDPCs. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
01432885
Volume :
50
Issue :
5
Database :
Complementary Index
Journal :
International Endodontic Journal
Publication Type :
Academic Journal
Accession number :
122303654
Full Text :
https://doi.org/10.1111/iej.12642