Mechanical and thermal properties of hydroxyaptite filled poly (methyl methacrylate) heat processed denture base material
The Medical Journal of Malaysia
;
: 25-26, 2004.
Article
in Malayalam
| WPRIM
| ID: wpr-629920
ABSTRACT
The aim of this study was to evaluate the effect of powder-to-liquid ratio on the glass transition temperature (Tg) and the tensile properties of denture base material prepared from poly (methyl methacrylate) (PMMA) and hydroxyapatite (HA) previously treated with 3-trimethoxysilylpropyl methacrylate (gamma-MPS). Specimens for mechanical testing were prepared by adding composites powder (PMMA, BPO and HA) to the monomer (MMA and EGDMA) followed by hand mixing as in dental laboratory description usage. The glass transition temperature was studied by using differential scanning calorimetry (DSC). It was observed that the tensile properties and the Tg were affected by the powder-to-liquid ratio. The mechanical characterization of the materials were performed by using single edge notch-tension (SEN-T) specimens; the fracture toughness was slightly higher in formulation which contained HA filler compared to commercial denture base material.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Tensile Strength
/
Biomechanical Phenomena
/
Materials Testing
/
Calorimetry, Differential Scanning
/
Microscopy, Electron, Scanning
/
Durapatite
/
Polymethyl Methacrylate
/
Denture Bases
Language:
Malayalam
Journal:
The Medical Journal of Malaysia
Year:
2004
Type:
Article
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