|
KMID : 0362220110380040295
|
|
Journal of The Korean Research Society for Dental Materials
2011 Volume.38 No. 4 p.295 ~ p.304
|
|
|
The Effect of Repair Method on the Flexural Strength of Repaired Denture Base Resin
|
|
Park Da-Ryeong
Bae Ji-Myung
Oh Seung-Han
|
|
|
Abstract
|
|
|
|
The purpose of this study was to examine the effect of repair method on the flexural strength of repaired denture base resin. Heat cured denture base resin (Vertex RS) was used to prepare denture base substrate based on the protocol of ISO 20795-1:2008. 3 kinds of repair methods (vertical method, 45˚ bevel method, complex method) were adopted to repair fractured denture base substrate, and 3 kinds of denture repair resins (Vertex SC, Luciton 199 Repair, Jet Dental Repair) were used in this study. 3 point flexural strength test was performed to evaluate the mechanical strength of repaired denture base resin in terms of 5 kinds of l oading directions. The f ailure mode of f ractured i nterface was o bserved after testing 3 p oint f lexural strength. With regard to the effect of repair methods, the results of flexural strength test indicated that the value of Inverse-directed complex method was significantly higher than that of other repair methods on the condition of Vertex SC and Luciton 199 Repair resin (P<0.05). However, Jet Dental Repair resin did not show a ny sig nificant d ifference between repair m ethods. From the o bservation of f ailure m ode, v ertical method did not show any unified consistency from the results of 3 denture repair resin. However, complex method indicated more cohesive and complex failure mode resulting in strong bond between denture base substrate and denture repair resin regardless of loading direction. Therefore, complex method among 3 repair methods is expected t o play c ritical role i n enhancing the mechanical streng th o f repaired d enture base resin.
|
|
|
KEYWORD
|
|
|
3 point flexural strength, Denture base resin, Failure mode, Repair method
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
|
|