The Effect of Incorporating Dimethylaminohexadecyl Methacrylate and/or 2-Methacryloyloxyethyl Phosphorylcholine on Flexural Strength and Surface Hardness of Heat Polymerized and 3D-Printed Denture Base Materials

被引:3
|
作者
Alazzam, Njood F. [1 ]
Bajunaid, Salwa O. [1 ]
Mitwalli, Heba A. [2 ]
Baras, Bashayer H. [2 ]
Weir, Michael D. [3 ]
Xu, Hockin H. K. [3 ]
机构
[1] King Saud Univ, Coll Dent, Dept Prosthet Sci, Riyadh 15, Saudi Arabia
[2] King Saud Univ, Coll Dent, Dept Restorat Dent Sci, Riyadh 15, Saudi Arabia
[3] Univ Maryland, Sch Dent, Dept Adv Oral Sci & Therapeut, Baltimore, MD 21201 USA
关键词
denture base material; removable dentures; denture stomatitis; candida albicans; antifungal; flexural strength; surface hardness; QUATERNARY AMMONIUM; CANDIDA-ALBICANS; OXIDE NANOPARTICLES; ACRYLIC RESIN; ANTIBACTERIAL; ANTIFUNGAL; BIOFILM; COMPOSITES; STOMATITIS; PMMA;
D O I
10.3390/ma17184625
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Background: A major disadvantage of polymethyl methacrylate (PMMA) acrylic resins is susceptibility to biofilm accumulation. The incorporation of antimicrobial agents is a reliable prevention technique. The purpose of this study is to investigate the effect of incorporating dimethylaminohexadecyl methacrylate (DMAHDM) and/or 2-methacryloyloxyethyl phosphorylcholine (MPC) into heat-polymerized (HP) and 3D-printed (3DP) denture base materials on the flexural strength, modulus of elasticity, and surface hardness. Methods: DMAHDM and/or MPC were mixed with the acrylic resin liquid of a heat-polymerized (ProBase Hot) and a 3D printed (NextDent Denture 3D) material at mass fractions of 1.5% and 3% and a combination of 3% MPC and 1.5% DMAHDM. Results: Significant differences in mechanical properties between the control and experimental groups have been detected (p-value < 0.0001). In HP materials, the addition of DMAHDM and/or MPC generally decreased the flexural strength, from (151.18 MPa) in G1 down to (62.67 MPa) in G5, and surface hardness, from (18.05 N/mm(2)) down to (10.07 N/mm(2)) in G5. Conversely, in 3DP materials, flexural strength was slightly enhanced, from (58.22 MPa) in G1 up to (62.76 MPa) in G6, although surface hardness was consistently reduced, from (13.57 N/mm(2)) down to (5.29 N/mm(2)) in G5. Conclusion: It is recommended to carefully optimize the concentrations of DMAHDM and/or MPC to maintain mechanical integrity.
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页数:21
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