-
Rheological properties, surface microhardness, and dentin shear bond strength of resin-modified glass ionomer cements containing methacrylate-functionalized polyacids and spherical pre-reacted glass fillers
- Back
Document Title
Rheological properties, surface microhardness, and dentin shear bond strength of resin-modified glass ionomer cements containing methacrylate-functionalized polyacids and spherical pre-reacted glass fillers
Author
Thepveera W., Potiprapanpong W., Toneluck A., Channasanon S., Khamsuk C., Monmaturapoj N., Tanodekaew S., Panpisut P.
Name from Authors Collection
Affiliations
Faculty of Dentistry, Thammasat University, Pathum Thani, 12120, Thailand; National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency, Pathum Thani, 12120, Thailand; Assistive Technology and Medical Devices Research Center (A-MED), National Science and Technology Development Agency, Pathum Thani, 12120, Thailand; Thammasat University Research Unit in Dental and Bone Substitute Biomaterials, Thammasat University, Pathum Thani, 12120, Thailand
Type
Article
Source Title
Journal of Functional Biomaterials
ISSN
20794983
Year
2021
Volume
12
Issue
3
Open Access
All Open Access, Gold, Green
Publisher
MDPI AG
DOI
10.3390/jfb12030042
Format
Abstract
The aim of this study was to prepare experimental resin-modified glass ionomer cements (RMGICs) containing low levels of hydroxyethyl methacrylate (HEMA) for pulp protection. Liquid and powder phases of the experimental RMGICs were polyacid functionalized with methacrylate groups and spherical pre-reacted glass fillers (SPG). Two types of liquid phase containing 0 wt. % HEMA (CM liquid) or 5 wt. % HEMA (CMH liquid) were formulated. The experimental RMGICs were prepared by mixing SPG fillers with CM liquid (F1) or CMH liquid (F2). Rheological properties were examined using a strain-controlled rheometer (n = 5). The Vickers microhardness (n = 5) and dentin shear bond strength (SBS) (n = 10) of the materials were tested. Commercial pulp protection materials (Vitrebond and TheraCal LC) were used as comparisons. The viscosity and surface microhardness of F1 (22 m Pa·s, 18 VHN) and F2 (18 m Pa·s, 16 VHN) were significantly higher than those of Vitrebond (6 mPa·s, 6 VHN) and TheraCal (0.1 mPa·s, 7 VHN). The SBS of F1 (10.7 MPa) and F2 (11.9 MPa) was comparable to that of Vitrebond (15.4 MPa) but higher than that of TheraCal LC (5.6 MPa). The addition of 5 wt. % HEMA showed no significant effect on viscosity, surface microhardness, or SBS of the experimental RMGICs. The experimental materials showed higher viscosity and microhardness but similar SBS when compared with the commercial RMGIC. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
Funding Sponsor
Thammasat University
License
N/A
Rights
N/A
Publication Source
Scopus