RESUMO
The aim of this study was to assess the effectiveness of five different solvents: xylol, eucalyptol, halothane, chloroform and orange oil on softening gutta-percha in simulated root canals. One drop of solvent was placed into a reservoir made in a simulated canal whose channel was previously instrumented and filled with gutta-percha and N-Rickert sealer. After 5 min, softening was evaluated for each solvent by the penetration of a spreader while applying force with a 442 Instron apparatus to reach a depth of 5 mm. The results were analyzed statistically by the Kruskal-Wallis test. Xylol and orange oil were better in softening gutta-percha than the other solvents. There was no significant difference between xylol and orange oil, but these were statistically different from eucalyptol, halothane and chloroform (p < 0.01).
Assuntos
Monoterpenos , Preparo de Canal Radicular/métodos , Clorofórmio , Cicloexanóis , Eucaliptol , Guta-Percha , Halotano , Óleos de Plantas , Retratamento , Materiais Restauradores do Canal Radicular , Solventes , Estatísticas não Paramétricas , Terpenos , XilenosRESUMO
The aim of this study was to assess the effectiveness of five different solvents: xylol, eucalyptol, halothane, chloroform and orange oil on softening gutta-percha in simulated root canals. One drop of solvent was placed into a reservoir made in a simulated canal whose channel was previously instrumented and filled with gutta-percha and N-Rickert sealer. After 5 min, softening was evaluated for each solvent by the penetration of a spreader while applying force with a 442 Instron apparatus to reach a depth of 5 mm. The results were analyzed statistically by the Kruskal-Wallis test. Xylol and orange oil were better in softening gutta-percha than the other solvents. There was no significant difference between xylol and orange oil, but these were statistically different from eucalyptol, halothane and chloroform (p<0.01)
Assuntos
Guta-Percha , Técnicas In Vitro , Tratamento do Canal Radicular , Solventes , RetratamentoRESUMO
O objetivo deste estudo foi verificar a eficácia de 4 diferentes solventes e classificá-los quanto ao seu potencial de ação. Metodologia - foram testados 4 solventes: xilol, eucaliptol, óleo de laranja, e halotano, analisados através de perda de peso. Para cada solvente foram utilizados 20 cones principais #40, depositados em placas de Petri, foram divididos em grupos, determinando os tempos: 1, 5, 10 e 15 minutos, resultando 5 amostras para cada tempo. Os resultados mostraram que o xilol foi solvente mais rápido para o tempo de 5 minutos. Todos os solventes, após 10 e 15 minutos de ação, tiveram poder de solvência sobre os cones de guta percha e que o óleo de laranja foi o solvente que se mais eficaz ao final dos tempos, seguido de xilol, eucaliptol e halotano. Assim, pudemos concluir que o óleo de laranja foi o solvente que mostrou resultado mais eficiente sobre o guta percha. A análise estatística, porém, demonstrou não haver diferença estatisticamente significante entre as amostras (p > 0.05)
