Effect of a denture cleanser on hardness, roughness and tensile bond strength of denture liners
Braz. j. oral sci
;
7(26): 1596-1601, July-Sept. 2008. ilus, tab, graf
Article
in English
| LILACS, BBO
| ID: lil-521323
ABSTRACT
Aim:
This study aim to investigate the effect of a denture cleanser on hardness, roughness and tensile bond strength of a rigid (Kooliner) and a soft denture liner (Elite Soft) after 7, 60 and 120 days of immersion.Methods:
Thirty circular and twenty rectangular specimens of each material were randomly distributed in two groups control - immersion in artificial saliva at 37°C; and experimental - immersion in artificial saliva at 37ºC combined with immersion in the cleanser for 5 min. Hardness was measured using either a Vickers or Shore A hardness tester, and a surface roughness tester was used to measure the surface roughness. Tensile bond strength was carried out on a universal testing machine. Data were analyzed statistically by ANOVA or Kruskal-Wallis test (alpha=0.05).Results:
No significant difference was found between the groups for the tested properties (p>0.05). There was an increase in the hardness of both materials after 60 days (p>0.05). No difference between the immersion periods was found for the roughness of Kooliner (p>0.05), although the roughness of Elite Soft decreased after 120 days in both groups (p>0.05). Kooliner presented higher tensile bond strength than Elite Soft (p>0.05).Conclusions:
Both materials showed alterations on the tested properties during the experimental period, but these changes were not promoted by the denture cleanser.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Acrylic Resins
/
Denture Cleansers
/
Denture Liners
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2008
Type:
Article
/
Project document
Affiliation country:
Brazil
Institution/Affiliation country:
University of São Paulo/BR
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