Influence of mouthwashes on the physical properties of orthodontic acrylic resin
Braz. j. oral sci
;
13(3): 203-208, Jul-Sep/2014. tab, graf
Article
in English
| LILACS
| ID: lil-725345
ABSTRACT
AIM:
The aim of this study was to evaluate the influence of acrylic resin immersion in different mouthwashes on hardness, roughness and color.METHODS:
Specimens of an orthodontic self-cured acrylic resin (Orto Clas(r)) were produced and immersed in five mouthwashes Plax(r) Classic (Colgate(r)); Plax(r) alcohol-free (Colgate(r)); Listerine(r) (Johnson & Johnson(r)); Periogard(r) (Colgate(r)) and Periogard(r) alcohol-free (Colgate(r)). Nine different immersion times were studied 1, 2, 4, 6, 8, 10, 12, 24 h and 7 days, totalizing 45 groups. The specimens were evaluated before and after immersion by Knoop microhardness (n=5), roughness in Ra parameter (n=5), and colorimetric analysis, CIElab (n=3).RESULTS:
All mouthwashes softened the acrylic resins after 7 days of immersion. PlaxÒ alcohol-free showed no statistically significant difference of softening between the immersion times. Listerine(r) showed softening after immersion at all times. Plax(r) alcohol-free and Listerine(r) showed significantly increased values of roughness after 12 h of immersion (p<0.05). Listerine(r) presented a significant increase in color variation after 12 h of immersion.CONCLUSIONS:
Immersion in mouthwashes could influence acrylic resin hardness, roughness and color...
Full text:
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Index:
LILACS (Americas)
Main subject:
Orthodontics
/
Acrylic Resins
/
Color
/
Physical Phenomena
/
Hardness
/
Mouthwashes
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2014
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Federal do Rio Grande do Sul/BR
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