A study on the shear bond strength between Co-Cr denture base and relining materials / 대한치과보철학회지
The Journal of Korean Academy of Prosthodontics
;
: 8-15, 2011.
Artigo
em Coreano
| WPRIM
| ID: wpr-94361
ABSTRACT
PURPOSE:
This study evaluated the bonding strength of direct relining resin to Co-Cr denture base material according to surface treatment and immersion time. MATERIALS ANDMETHODS:
In this study, Co-Cr alloy was used in hexagon shape. Each specimen was cut in flat surface, and sandblasted with 110 microm Al2O3 for 1 minute. 54 specimens were divided into 3 groups; group A-control group, group B-applied with surface primer A, group C-applied with surface primer B. Self curing direct resin was used for this study. Each group was subdivided into another 3 groups according to the immersion time. After the wetting storage, shear bond strength of the specimens were measured with universal testing machine. The data were analyzed using two-way analysis of variance and Tukey post hoc method.RESULTS:
In experiment of sandblasting specimens, surface roughness of the alloy was the highest after 1 minute sandblasting. In experiment of testing shear bond strength, bonding strength was lowered on group B, C, A. There were significant differences between 3 groups. According to period, Bonding strength was the highest on 0 week storage group, and the weakest on 2 week storage group. But there were no significant differences between 3 periods. According to group and period, bonding strength of all group were lowered according to immersion time but there were no significant differences on group B and group C, but there was significant difference according to immersion time on group A.CONCLUSION:
It is useful to sandblast and adopt metal primers when relining Co-Cr metal base dentures in chair-side.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Dentaduras
/
Colódio
/
Bases de Dentadura
/
Ligas
/
Imersão
/
Metacrilatos
Idioma:
Coreano
Revista:
The Journal of Korean Academy of Prosthodontics
Ano de publicação:
2011
Tipo de documento:
Artigo
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