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Physicochemical properties and antimicrobial activity of calcium hydroxide pastes in association with other compounds
Borges, Mariana Maciel Batista; Frank, Mayara Conde; Zancan, Rafaela Fernandes; Tartari, Talita; Vivan, Rodrigo Ricci; Duarte, Marco Antonio Hungaro.
  • Borges, Mariana Maciel Batista; University of São Paulo. Department of Operative Dentistry, Endodontics, and Dental Materials. Bauru. BR
  • Frank, Mayara Conde; University of São Paulo. Department of Operative Dentistry, Endodontics, and Dental Materials. Bauru. BR
  • Zancan, Rafaela Fernandes; University of São Paulo. Department of Operative Dentistry, Endodontics, and Dental Materials. Bauru. BR
  • Tartari, Talita; University of São Paulo. Department of Operative Dentistry, Endodontics, and Dental Materials. Bauru. BR
  • Vivan, Rodrigo Ricci; University of São Paulo. Department of Operative Dentistry, Endodontics, and Dental Materials. Bauru. BR
  • Duarte, Marco Antonio Hungaro; University of São Paulo. Department of Operative Dentistry, Endodontics, and Dental Materials. Bauru. BR
Braz. j. oral sci ; 20: e212098, jan.-dez. 2021. ilus
Article in English | LILACS, BBO | ID: biblio-1281101
Responsible library: BR218.1
ABSTRACT

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). Ca2+ release was higher in all groups at 7 days, with the highest values observed in G1, G5, and G6. The volume of all pastes showed no significant difference in the intragroup analysis at 7 and 15 days (P <0.05). G1 and G2 showed the highest antimicrobial action (P <0.05). For the biovolume, there was difference between the G6 and the other groups (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
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Root Canal Filling Materials / Calcium Hydroxide / Biofilms / Chemical Phenomena / Anti-Infective Agents Type of study: Risk factors Language: English Journal: Braz. j. oral sci Journal subject: Dentistry Year: 2021 Type: Article Affiliation country: Brazil Institution/Affiliation country: University of São Paulo/BR

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Full text: Available Index: LILACS (Americas) Main subject: Root Canal Filling Materials / Calcium Hydroxide / Biofilms / Chemical Phenomena / Anti-Infective Agents Type of study: Risk factors Language: English Journal: Braz. j. oral sci Journal subject: Dentistry Year: 2021 Type: Article Affiliation country: Brazil Institution/Affiliation country: University of São Paulo/BR