Open AccessPhysicochemical properties and antimicrobial activity of calcium hydroxide pastes in association with other compounds
Author(s) -
Mariana Maciel Batista Borges,
Mayara Conde Frank,
Rafaela Fernandes Zancan,
Talita Tartari,
Rodrigo Ricci Vivan,
Marco Antônio Húngaro Duarte
Publication year - 2021
Publication title -
brazilian journal of oral sciences/brazilian journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.125
H-Index - 11
eISSN - 1677-3225
pISSN - 1677-3217
DOI - 10.20396/bjos.v20i00.8662098
Subject(s) - benzalkonium chloride , calcium hydroxide , nuclear chemistry , chemistry , solubility , antimicrobial , acetone , dentin , calcium , sodium , enterococcus faecalis , food science , dentistry , chromatography , biochemistry , organic chemistry , medicine , escherichia coli , gene
Aim: This study aimed to evaluate the pH, Ca2+ release, solubility, and antimicrobial activity of calcium hydroxide (Ca(OH)2) pastes in association with different substances. Methods: Sixty acrylic teeth (n=10) were filled with pastes that associated Ca(OH)2 with the following substances: benzalkonium chloride 5% (G1) and 50% (G2) both in propylene glycol, arnica glycolic extract (G3), green tea glycolic extract (G4), Calen/PMCC™ (G5), and Calen™ (G6). In the group G1 to G4 were used 1g of Ca(OH)2 powder with 0,8g of vehicle. pH and Ca2+ release was measured after 7, 15, and 30 days. For solubility, micro-CT was used immediately and at the periods of 7, 15, and 30 days. For the antimicrobial analysis, a biofilm of E. faecalis was induced in vitro on bovine dentin discs. Live/dead viability dye and confocal scanning microscopy were used. Results: The highest pH values occurred on the first 7 days, and the G6, G1, G3, and G5 presented the highest pH values at this period (P 0.05) with G1 presenting the lowest values. Conclusion: Benzalkonium chloride 5% increases the antimicrobial action of the Ca(OH2), without impairs physicochemical properties.