Physicochemical Properties of Root Canal Filling Materials for Primary Teeth

Author(s)

Raquel Assed Bezerra Segato ^[1] ; Carolina Maschietto Pucinelli ^[2] ; Danielly Cunha Araújo Ferreira ^[3] ; Andiara De Rossi Daldegan ^[4] ; Roberto S. da Silva ^[5] ; Paulo Nelson-Filho ^[6] ; Léa A. B. da Silva ^[7]

Affiliation

^[1] University of São Paulo. Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto - Brasil

^[2] University of São Paulo. Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto - Brasil

^[3] University of São Paulo. Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto - Brasil

^[4] University of São Paulo. Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto - Brasil

^[5] University of São Paulo. Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto - Brasil

^[6] University of São Paulo. Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto - Brasil

^[7] University of São Paulo. Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto - Brasil

• Document type: Journal article
• Source: Brazilian Dental Journal; v. 27, n. 2, p. 196-201, 2016-04-00.

Abstract

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. (AU)

• FAPESP's process: 11/00277-7 - An in vitro evaluation of physicochemical properties of filling materials of primary teeth: ions release, pH, electric conductivity and radiopacity
• Grantee: Carolina Maschietto Pucinelli
• Support Opportunities: Scholarships in Brazil - Scientific Initiation