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KMID : 0615219890140010181
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Journal of Kwangju Health
1989 Volume.14 No. 1 p.181 ~ p.191
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Effect of surface treatment on transverse strength of denture repaire when heat cured resin denture base is repaired
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鄭宗鉉
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Abstract
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The purpose of this study was to investigate the effect of surface treatment on strength of denture repair as influenced by repair resin .
Specimens were fabricated from VERTEX heat cured resin. Rectangular specimens (60 X 10 X 3 mm) were prepared according to the manufacturer´s instruction f o r mixing and packing the resin into molds.
Two methods of surface treatment were used and two methods of repair were also tested.
The transverse strength of the resin was measured before repair and after repair by AUTOGRAPH testing machine. Six specimens of each category were prepared for testing for a total of 24 specimens.
The mean value of the percent of recovery was calculated from t h e percent of recovery for six specimens.
The results were as follows :
1. The mean value of the percent of recovery of each categorymakew a significant difference statistically one another 2. When no chloroform is used to treat the fractured surface there is no significant difference between the mean values of the percent of recovery influenced by the self curing resin and heat cured resin. But, when chloroform is used there is a significant difference between the two repair resins (P < 0.01).
3. When self curing resin repair is used there is no significant difference between repair with and without the surface treatment of chloroform. But, when hear cured resin repair is used the use of chloroform treatment become significant statistically (P<0.01).
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