Evaluation of physico-chemical properties of Portland cements and MTA
Journal Title: Brazilian Oral Research - Year 2010, Vol 24, Issue 3
Abstract
The purpose of this study was to evaluate the hydrogenionic potential and electrical conductivity of Portland cements and MTA, as well as the amount of arsenic and calcium released from these materials. In Teflon molds, samples of each material were agitated and added to plastic flasks containing distilled water for 3, 24, 72 and 168 h. The results were analyzed with a Kruskal-Wallis non-parametric test for global comparisons and a Dunn-Tukey test for pairwise comparisons. The results revealed no significant differences in the pH of the materials (p > 0.05). The electrical conductivity of the cements were not statistically different (p > 0.05). White non-structural cement and MTA BIO released the largest amount of calcium ions into solution (p < 0.05), while arsenic release was insignificant in all of the materials (p > 0.05). The results indicated that the physico-chemical properties of Portland cements and MTA were similar. Furthermore, all materials produced an alkaline environment and can be considered safe for clinical use because arsenic was not released. The electrical conductivity and the amount of calcium ions released into solution increased over time.
Authors and Affiliations
Jorge Luis Gonçalves, Raqueli Viapiana, Carlos Eduardo Saraiva Miranda Miranda, Álvaro Henrique Borges, Antônio Cruz Filho
Keywords
Related Articles
- EP ID EP85015
- DOI 10.1590/S1806-83242010000300004
- Views 106
- Downloads 0
Evaluation of physico-chemical properties of Portland cements and MTA
The purpose of this study was to evaluate the hydrogenionic potential and electrical conductivity of Portland cements and MTA, as well as the amount of arsenic and calcium released from these materials. In Teflon molds,...
Mesiodistal width and proximal enamel thickness of maxillary first bicuspids
This study aimed at evaluating measurements relative to the mesiodistal crown width and enamel thickness of maxillary first bicuspids. The sample consisted of 40 extracted sound bicuspids (20 right and 20 left), selected...
Juveniles versus adults: differences in PGE2 levels in the gingival crevicular fluid during orthodontic tooth movement
This study aimed to investigate age-related changes in the biosynthetic capacity of prostaglandin E2 (PGE2) in the gingival crevicular fluid (GCF) during one month of orthodontic treatment. Twenty-five juvenile subjects...
Evaluation of alternative methods for the disinfection of toothbrushes
The aim of this study was to evaluate alternative methods for the disinfection of toothbrushes considering that most of the previously proposed methods are expensive and cannot be easily implemented. Two-hundred toothbru...
Mechanical properties of one and two-step fluoridated orthodontic resins submitted to different pH cycling regimes
The aim of this study is to assess the in vitro shear bond strength and adhesive remnant index (ARI) of one and two-step fluoridated orthodontic resins under conditions that simulate high cariogenic challenge. Edgewise...