Influência da adição de surfactantes a géis clareadores à base de peróxido de hidrogênio a 35% e peróxido de carbamida a 10% na efetividade do clareamento dental: estudo in vitro
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Data
2008-06-17
Autores
Caneppele, Taciana Marco Ferraz [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Este estudo avaliou a influência da adição de diferentes tipos de surfactantes na efetividade de géis clareadores a base de peróxido de hidrogênio a 35% (PH) e peróxido de carbamida a 10% (PC), durante o processo de clareamento, através da análise da cor dos elementos dentais. Foram utilizados cento e quarenta dentes bovinos, os quais foram escurecidos através da imersão em solução de café solúvel, vinho tinto e fumo, por uma semana. Terminado o processo de escurecimento, foi delimitada uma área de leitura da cor e realizada a leitura inicial, através do espectrofotômetro Easy Shade. Os espécimes foram divididos em sete grupos: a) controle negativo (CN); b) controle positivo para PH (CP-35); c) PH + Tween 20 (T20-35); d) PH + lauril sulfato de sódio (LSS-35); e) controle positivo para PC (CP-10); f) PC + Tween 20 (T20-10); g) PC + lauril sulfato de sódio (LSS-10). O grupo CN foi mantido em saliva artificial por 21 dias. Os grupos CP-35, T20-35 e LSS 35 receberam 3 aplicações de gel clareador por 10 minutos e após 7 dias repetiu-se o processo. Os grupos CP-10, T20-10 e LSS-10 receberam o gel 8 horas por dia por 14 dias. A cor dos espécimes foi lida após a primeira e segunda sessão para os grupos com PH, e após 7 e 14 dias para os grupos com PC. Todos os espécimes tiveram sua cor medida uma semana após o término do clareamento. Os testes de análise de variância e Tukey mostraram diferenças estatisticamente significantes para os parâmetros de L, a, b e E dos géis de PH com surfactante para o gel CP-35. Concluiu-se que a adição de surfactantes ao gel clareador a base de PH aumentou a efetividade do clareamento...
This study evaluated the influence of the addition of different types of surfactants in the effectiveness of 35% hydrogen peroxide and 10% carbamide peroxide agents, during the bleaching process, through the color analysis of the dental elements. One hundred and forty bovine teeth had been used, which had been darkened through the immersion in coffee solution, red wine and tobacco, for one week. Finished the darkened process, an area of color reading was delimited and the initial measurement of the color was carried through Easy Shade spectrophotometer. The specimens had been divided in seven groups: a) the negative control (CN); b) positive control for PH (CP-35); c) PH + Tween 20 (T20-35); d) PH + lauril sodium sulphate (LSS-35); e) positive control for PC (CP-10); f) PC + Tween 20 (T20-10); g) PC + lauril sodium sulphate (LSS-10). Group CN was kept in artificial saliva for 21 days. Groups CP-35, T20-35 and LSS 35 had received 3 applications from bleaching agents for 10 minutes and after 7 days the process was repeated. Groups CP-10, T20-10 and LSS-10 had received the bleaching agents 8 hours for day for 14 days. The color of specimens was measured after first and second session for the groups with PH, and after 7 and 14 days for the groups with PC. All the specimens had its measured color one week after the finished of the bleaching. The tests of analysis of variance and Tukey had shown significant differences for the parameters of L, a, b and E of the PH agents with surfactants for the CP-35. It was concluded that the addition of surfactants to the 35% PH bleaching agents increased the effectiveness of the dental bleaching.
This study evaluated the influence of the addition of different types of surfactants in the effectiveness of 35% hydrogen peroxide and 10% carbamide peroxide agents, during the bleaching process, through the color analysis of the dental elements. One hundred and forty bovine teeth had been used, which had been darkened through the immersion in coffee solution, red wine and tobacco, for one week. Finished the darkened process, an area of color reading was delimited and the initial measurement of the color was carried through Easy Shade spectrophotometer. The specimens had been divided in seven groups: a) the negative control (CN); b) positive control for PH (CP-35); c) PH + Tween 20 (T20-35); d) PH + lauril sodium sulphate (LSS-35); e) positive control for PC (CP-10); f) PC + Tween 20 (T20-10); g) PC + lauril sodium sulphate (LSS-10). Group CN was kept in artificial saliva for 21 days. Groups CP-35, T20-35 and LSS 35 had received 3 applications from bleaching agents for 10 minutes and after 7 days the process was repeated. Groups CP-10, T20-10 and LSS-10 had received the bleaching agents 8 hours for day for 14 days. The color of specimens was measured after first and second session for the groups with PH, and after 7 and 14 days for the groups with PC. All the specimens had its measured color one week after the finished of the bleaching. The tests of analysis of variance and Tukey had shown significant differences for the parameters of L, a, b and E of the PH agents with surfactants for the CP-35. It was concluded that the addition of surfactants to the 35% PH bleaching agents increased the effectiveness of the dental bleaching.
Descrição
Palavras-chave
Clareamento dental, Materiais dentários, Peróxido de hidrogênio, Peroxidado Carbamina
Como citar
CANEPPELE, Taciana Marco Ferraz. Influência da adição de surfactantes a géis clareadores à base de peróxido de hidrogênio a 35% e peróxido de carbamida a 10% na efetividade do clareamento dental: estudo in vitro. 2008. 123 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Odontologia de São José dos Campos, 2008.