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Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
EISSN: 1677-3225
Vol. 9, No. 3, 2010, pp. 366-370
Bioline Code: os10037
Full paper language: English
Document type: Research Article
Document available free of charge

Brazilian Journal of Oral Sciences, Vol. 9, No. 3, 2010, pp. 366-370

 en Cytotoxicity of orthodontic elastics: In vitro investigation with on L929 mouse fibroblasts
Rogério Lacerda dos Santos; Matheus Melo Pithon; Fernanda Otaviano Martins & Maria Teresa Villela Romanos

Abstract

Aim: To test the hypothesis that there is no difference in the cytotoxicity among natural latex elastics of different manufacturers using a L929 cell line culture.
Methods: Different latex intraoral elastics (I.D. = 5/16", 4.5 oz.) were tested. The sample was divided into 7 groups of 15 elastics each: Group AO (American Orthodontics), Group GAC (GAC International), Group TP (TP Orthodontics), Group AD (Aditek), Group AB (Abzil), Group MO (Morelli) and Group UN (Uniden). Cytotoxicity assays were performed by using cell culture medium containing L-929 line cells (mouse fibroblast). The cytotoxicity was evaluated by using the "dye-uptake" test, which was employed at two different moments (1 and 24 h). Data were compared by ANOVA and Tukey's test (P < 0.05).
Results: The results showed a significant difference (P < 0.05) between all groups and the group CC (cell control) at 1 and 24 h. Groups AD, AB, MO and UN were noticeably more cytotoxic than the groups AO, GAC and TP at 1 h. After 24 h, a significant decrease in cell viability was observed in all groups.
Conclusions: Intraoral elastics from American Orthodontics, GAC and TP Orthodontics trademarks induced less cell lysis than Aditek, Abzil, Morelli and Uniden trademarks.

Keywords
cytotoxicity, elastics, biocompatibility, orthodontics.

 
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