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In vitro cytotoxicity of latex orthodonticelastics / Citotoxicidad de los elásticos ortodònticos de látex
Dos Santos, Rogério Lacerda; Pithon, Matheus Melo; Martins, Fernanda Otaviano; Romanos, Maria Teresa Villela.
  • Dos Santos, Rogério Lacerda; Federal University of Alfenas. Minas Gerais. BR
  • Pithon, Matheus Melo; Federal University of Alfenas. Minas Gerais. BR
  • Martins, Fernanda Otaviano; s.af
  • Romanos, Maria Teresa Villela; Federal University of Rio de Janeiro. Rio de Janeiro. BR
Int. j. odontostomatol. (Print) ; 4(1): 81-85, abr. 2010. ilus, tab
Article in English | LILACS | ID: lil-596808
ABSTRACT
Natural latex does not fall into the category of materials known to be entirely inoffensive. The objective of the present in vitro study is to test the hypothesis that there is no difference in the cytotoxicity between natural latex elastics of different colours. The present article compared different latex intra-oral elastics (5/16 = 7.9 mm). The sample was divided into four groups according to their manufacturer Group N (Natural latex elastic, Morelli), Group R (Red colour elastic, Morelli) Group Y (Yellow colour elastic, Morelli) and Group G (Green colour elastic, Morelli). Cytotoxicity assays were performed by using cell culture medium containing L-929 line cells (mouse fibroblast). The cytotoxicity was evaluated by using the “dyeuptake” test, which was employed at two different moments (1 and 24 h). Data were compared by analysis of variance (ANOVA) and Tukey’s test (p<0.05). The results showed a significant difference (p<0.05) between the groups N, R, Y, G and the negative cytotoxicity control at 1 and 24 h (p<0.05), it did not have presented significant difference between the groups N, R, Y, G tested (p>0.05) at 1 and 24 h. Morelli intra-oral elastics were found to be highly cytotoxic, regardless of their colour and immersion time.
RESUMEN
El látex natural no entra en la categoría de materiales que se sabe del todo inofensivo. El objetivo del presente estudio in vitro es poner a prueba la hipótesis de que no hay diferencia en la citotoxicidad entre elásticos de látex natural de diferentes colores. El presente artículo compara diferentes elásticos intraorales de látex (5/16 =7,9 mm). La muestra se dividió en cuatro grupos según su fabricante Grupo N (elástico látex, Morelli), Grupo I (elástico de color rojo, Morelli) Grupo Y (elástico de color amarillo, Morelli) y el Grupo G (elástico color verde, Morelli). Pruebas de citotoxicidad se realizaron mediante el uso de medio de cultivo celular que contiene líneas celulares L-929 (fibroblastos de ratón). La citotoxicidad se evaluó mediante el test “dye-uptake”, que se empleó en dos momentos diferentes (1 y 24 h). Los datos se compararon mediante análisis de varianza (ANOVA) y test de Tukey (p<0,05). Los resultados mostraron una diferencia significativa (p<0,05) entre los grupos N, R, Y, G y la negativa citotoxicidad del control en 1 y 24 h (p<0,05), no han presentado diferencias significativas entre los grupos N, R , Y, G probado (p>0,05) en 1 y 24 h. Elásticos intraorales Morelli resultaron ser altamente citotóxicos, independientemente de su color y tiempo de inmersión.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Orthodontic Appliances / Biocompatible Materials / Latex Language: English Journal: Int. j. odontostomatol. (Print) Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Alfenas/BR / Federal University of Rio de Janeiro/BR

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Full text: Available Index: LILACS (Americas) Main subject: Orthodontic Appliances / Biocompatible Materials / Latex Language: English Journal: Int. j. odontostomatol. (Print) Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Alfenas/BR / Federal University of Rio de Janeiro/BR