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Influencia del envejecimiento artificial acelerado sobre la resistencia a compresión de resinas compuestas / The influence of accelerated aging in compressive resistance composite resins
Nicoluzzi, Alexandro; Ribeiro Moysés, Marcos; Candido dos Reis, Andréa; Ribeiro, José Carlos Rabelo; Dias, Sérgio Candido.
  • Nicoluzzi, Alexandro; UNINCOR. Três Corações. BR
  • Ribeiro Moysés, Marcos; UNINCOR. Três Corações. BR
  • Candido dos Reis, Andréa; UNINCOR. Três Corações. BR
  • Ribeiro, José Carlos Rabelo; UNINCOR. Três Corações. BR
  • Dias, Sérgio Candido; UNINCOR. Três Corações. BR
Acta odontol. venez ; 46(4): 465-468, 2008. ilus, tab
Article in Spanish | LILACS | ID: lil-630051
RESUMEN
El objetivo de este trabajo fue verificar la influencia del Envejecimiento Artificial Acelerado sobre la resistencia a compresión de tres resinas compuestas. Los especimenes fueron confeccionados con auxilio de una matriz de nylon utilizando la técnica incremental, en cuanto a la manipulación se siguieron las instrucciones del fabricante , en total fueron confeccionados 48 especimenes utilizando las resina compuestas Filtek Supreme (3M-ESPE), Charisma (Heraeus-Kulzer) e Filtek Z-250 (3M-ESPE). Transcurridas 24 horas, 24 especimenes, 8 de cada material, fueron sometidos a ensayos mecánicos de compresión en la Máquina Universal de Ensayos (EMIC DL-2000) con una célula de carga de 2000Kgf y velocidad de 0,05mm/min. Los otros 24 cuerpos de prueba fueron sometidos a envejecimiento artificial acelerado en la máquina de C-UV Sistema Acelerado de Envejecimiento para no metálicos - ASTM-G-53 por 192 horas, lo que equivale a aproximadamente 5 años de envejecimiento en condiciones clínicas normales, posteriormente sometidas a ensayos mecánicos de compresión. Se realizo el análisis estadístico comparativo entre los resultados obtenidos utilizando el test de ANOVA/Tukey (P<0,05) y fue verificado que no hubo diferencia estadística en la resistencia a compresión entre las resinas Z-250 y Filtek Supreme envejecidas y no envejecidas. Entretanto se presento diferencia estadística entre las muestras confeccionadas con la resina Charisma envejecida y no envejecida
ABSTRACT
The objective of this work was to verify the influence of the Sped up Artificial Aging in the compressive strength of 3 composed resins. It was used a matrix of nylon for confection of 48 bodies of test with 8,0mm of height and 4,0mm of width, having been 16 with the Filtek resin Supreme(3M), 16 with Charisma (Heraeus Kulzer) and 16 with Filtek Z-250(3M). For the confection of the test bodies the incremental technique was used respecting the time of curing indicated for the manufacturers. Passed 24 hours, half of the bodies of test of each material was submitted to the compressive assay in the Universal Machine of Assays (EMIC DL-2000) with load cell of 2000Kgf and speed of 0,05mm/min. To another half it was submitted to the artificial aging sped up in the C-UV machine Sped up System of Aging for not metallic - ASTM-G-53 for 192 hours that is equivalent approximately the 5 years of aging and later submitted to the compressive assay. Analysis was become fullfilled comparative statistics between the gotten results using ANOVA/Tukey (P<0.05). It was verified that it did not have difference statistics in the compressive strength between the resins aged and not aged Z-250 and Filtek Supreme. However difference occurred statistics between aged and not aged the Charisma resin
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Full text: Available Index: LILACS (Americas) Main subject: Composite Resins Type of study: Evaluation studies Language: Spanish Journal: Acta odontol. venez Journal subject: Medicina Bucal / Dentistry / Sa£de Bucal Year: 2008 Type: Article Affiliation country: Brazil Institution/Affiliation country: UNINCOR/BR

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Full text: Available Index: LILACS (Americas) Main subject: Composite Resins Type of study: Evaluation studies Language: Spanish Journal: Acta odontol. venez Journal subject: Medicina Bucal / Dentistry / Sa£de Bucal Year: 2008 Type: Article Affiliation country: Brazil Institution/Affiliation country: UNINCOR/BR