Physicochemical Properties of Root Canal Filling Materials for Primary Teeth

• Autor(a) principal: Segato,Raquel Assed Bezerra
• Data de Publicação: 2016
• Outros Autores: Pucinelli,Carolina Maschietto, Ferreira,Danielly Cunha Araújo, Daldegan,Andiara De Rossi, Silva,Roberto S. da, Nelson-Filho,Paulo, Silva,Léa A. B. da
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Dental Journal
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402016000200196
• topic: filling materials; primary teeth; calcium hydroxide; pH; radiopacity; setting time; dimensional changes; solubility.

Abstract This study evaluated physiochemical proprieties of a calcium hydroxide-based paste (Calen(r)) combined with a zinc oxide cement at different ratios (1:0.5, 1:0.65, 1:0.8 and 1:1). Materials were compared regarding setting time, pH variation, radiopacity, solubility, dimensional changes, flow and release of chemical elements. Data were analyzed statistically by ANOVA and Tukey's test (α=0.05). Longer setting time and higher dimensional changes and solubility values were exhibited by 1:0.65 and 1:0.5 ratios (p<0.05). The 1:0.5 and 1:0.65 ratios exhibited the highest pH values at all time points. All materials exhibited high radiopacity values. Significant differences were found only between 1:0.5 and 1:1 ratios for calcium and zinc release (p<0.05), whereas the amount of zirconium was similar among all groups (p>0.05). Considering the evaluated proprieties, combinations of Calen(r) paste with ZO at 1:0.5 and 1:0.65 ratios had the best results as root canal filling materials for use in primary teeth.