Effect of different mixing and curing methods on the mechanical properties of denture base resin / 中华口腔医学杂志
Chinese Journal of Stomatology
;
(12): 564-565, 2008.
Article
in Chinese
| WPRIM
| ID: wpr-251002
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the differences between the mechanical properties of denture base processed by traditional mixing and malaxation method, and by traditional hot water polymerization and electrical heat-polymerization.</p><p><b>METHODS</b>Samples used in this investigation were commercial acrylic denture base resin made by using two different mixing methods, and by using two different curing methods. The samples were assigned to 4 test groups. Group 1 traditional mixing + hot water polymerization. Group 2 malaxation + hot water polymerization. Group 3 traditional mixing + electrical heat-polymerization. Group 4 malaxation + electrical heat-polymerization. Surface hardness, flexural strength, flexural modulus, and impact strength were tested of each sample.</p><p><b>RESULTS</b>The mean of the four groups' surface hardness was 19.4, 21.2, 22.3, 23.2 N/mm2, and of flexural strength was 58.58, 63.32, 66.73, 63.76 MPa, and of impact strength was 1.42, 1.53, 1.77, 1.78 KJ/m2, and of flexural modulus was 2311.38, 2417.82, 2566.36, 2400.37 MPa.</p><p><b>CONCLUSIONS</b>Surface hardness and impact strength of malaxation method + electrical heat-polymerization group are higher than those of traditional mixing + hot water polymerization group.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Acrylic Resins
/
Materials Testing
/
Technology, Dental
/
Mechanics
/
Dental Materials
/
Dental Stress Analysis
/
Denture Bases
/
Methods
Language:
Chinese
Journal:
Chinese Journal of Stomatology
Year:
2008
Type:
Article
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