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Cytotoxicity of dental alginates / Citotoxicidad de alginatos dentales
Pithon, Matheus Melo; Dos Santos, Rogério Lacerda; Martins, Fernanda Otaviano; Romanos, Maria Teresa Villela.
  • Pithon, Matheus Melo; Federal University of Rio de Janeiro. BR
  • Dos Santos, Rogério Lacerda; Federal University of Rio de Janeiro. BR
  • Martins, Fernanda Otaviano; Federal University of Rio de Janeiro. Institute of Microbiology. BR
  • Romanos, Maria Teresa Villela; Federal University of Rio de Janeiro. BR
Int. j. odontostomatol. (Print) ; 4(3): 303-308, dic. 2010. ilus, tab
Article in English | LILACS | ID: lil-594270
ABSTRACT
Alginate, or irreversible hydrocolloid, is one of the most accepted impression materials used in dentistry. However, some substances existing in these materials can be toxic. The aim of this study was to assess the cytotoxicity of alginates for dental applications. Fourteen different alginates were assessed Jeltrate, Jeltrate Plus, Jeltrate Chromatic, Alga Gel, Printer Gel, Ava Gel, New Print, Kromopan 100, Tropicalgin, Cavex Orthotrace, Hydrogum, Orthoprint, Cavex Color Change, and Qualitygel. Three control groups were also used in this study positive control group (C+) consisting of cell detergent Tween 80, negative control group (C-) consisting of PBS, and cell control group (CC) consisting of non-exposed cells. After manipulating the materials according to the manufacturer’s instructions, samples were made by using silicone rings. Next, the samples were immersed into Eagle’s minimum essential medium (MEM) for 2 minutes followed by removal of supernatants and contact with L929 fibroblasts. After contact with the medium, the cells were incubated for further 24 hours in which 100µl of 0.01 por ciento neutral red stain were added. Cells were incubated again for 3 hours so that the stain could be absorbed. After this period, the cells were fixed and viable cell counting was performed by using a spectrophotometer (BioTek, Winooski, Vermont, USA) at wavelength of 492 nm. The results demonstrated statistical differences between CC and C- groups in relation to other ones (p<0.05). No statistical differences were observed between Jeltrate Plus and Hydrogum groups, between Jeltrate and Jeltrate Chromatic, Printer Gel, Tropicalgin, and Qualitygel groups, and between Jeltrate Chromatic and Alga Gel, Ava Gel, New Print, Kromopan 100, Cavex Orthotrace, Hydrogum, Orhtoprint, and Cavex Color Change groups. One can conclude, based on the results of this study, that all alginate materials were found to be cytotoxic.
RESUMEN
El alginato o hidrocoloide irreversible, es uno de los materiales de impresión más aceptados y utilizados en odontología. Sin embargo, algunas substancias existentes en estos materiales pueden ser tóxicas. El objetivo de este estudio fue evaluar la citotoxicidad de los alginatos para aplicaciones dentales. Fueron evaluados 14 alginatos diferentes Jeltrate, Jeltrate Plus, Jeltrate Chromatic, Alga Gel, Printer Gel, Ava Gel, New Print, Kromopan 100, Tropicalgin, Cavex Orthotrace, Hydrogum, Orthoprint, Cavex Color Change y Qualitygel. También se utilizaron tres grupos de control también se utilizaron en este estudio grupo control positivo (C+) que consiste en células de detergente Tween 80, el grupo de control negativo (C-) que consiste en PBS, y el grupo de células de control (CC) que consiste de las células no expuestas. Después de la manipulación de los materiales de acuerdo a las instrucciones del fabricante, las muestras fueron hechas mediante el uso de anillos de silicona. A continuación, las muestras se sumergieron en medio mínimo esencial de Eagle (MEM) durante 2 minutos, seguido de la eliminación de los sobrenadantes y el contacto con los fibroblastos L929. En caso de contacto con el medio, las células fueron incubadas durante 24 horas más en 100ml de tinción roja neutra al 0,01 por ciento. Las células se incubaron nuevamente durante 3 horas para que la tinción pueda ser absorbida. Después de este período, las células fueron fijadas y el recuento de células viables se realizó mediante un espectrofotómetro (BioTek, Winooski, Vermont, EE.UU.) a la longitud de onda de 492 nm. Los resultados demostraron diferencias estadísticamente significativas entre los grupos de CC y C- en relación con los demás (p<0,05). No se observaron diferencias estadísticas entre los grupos Jeltrate Plus y Hydrogum, entre Jeltrate y los grupos Jeltrate Chromatic, Printer Gel, Tropicalgin y Qualitygel, y entre Jeltrate Chromatic y los grupos Alga Gel, Ava Gel, New Print, ...
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Full text: Available Index: LILACS (Americas) Main subject: Dental Impression Materials / Alginates Limits: Humans Language: English Journal: Int. j. odontostomatol. (Print) Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Rio de Janeiro/BR

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Full text: Available Index: LILACS (Americas) Main subject: Dental Impression Materials / Alginates Limits: Humans Language: English Journal: Int. j. odontostomatol. (Print) Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Rio de Janeiro/BR