Evaluation of cytotoxicity of accessories used for traction of impacted teeth
Braz. j. oral sci
;
9(2): 115-119, Apr.-June 2010. ilus, tab
Article
in English
| LILACS, BBO
| ID: lil-578074
ABSTRACT
Aim:
To test the hypothesis that gold-coated orthodontic accessories used for canine traction are less cytotoxic than those made of stainless steel.Methods:
Six different orthodontic accessories were evaluated, three of them made from stainless steel (1 bracket, 2 button, 3 mesh pad) and three made from a gold-coated alloy (4 small mesh pad, 5 button, 6 big mesh pad). Three control groups were also analyzed Positive control (C+), consisting of Tween 80 cell detergent;Negative control (C-), consisting of PBS; and Cell control (CC), consisting of cells not exposed to any material. Dye-uptake technique, in which neutral red dye is incorporated into viable cells, was used to assess the cytotoxicity of the accessories. Viable cell counting was performed using a spectrophotometer. Data were analyzed statistically by A NOVA and Tukeys test.Results:
Statistically significant differences (P< 0.05) were found between Groups 1-3 and Groups 4-6. However, no differences were found between Groups 1-3 and Groups C- and CC, and neither between Groups 4-6 and Group C+.Conclusions:
The tested hypothesis was not confirmed since gold-coated orthodontic accessories were found to be more cytotoxic than those made of stainless steel.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Orthodontic Appliances
/
Stainless Steel
/
Tooth, Impacted
/
Culture Media
/
Fibroblasts
/
Gold Alloys
Limits:
Humans
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2010
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Federal University of Rio de Janeiro/BR
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