Light-curing of calcium hydroxide-based liners: pH analysis and calcium ion release

Authors

  • Paulo Fermino Costa Neto Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brazil. https://orcid.org/0000-0002-2127-5500
  • Mariana Bena Gelio Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brazil. https://orcid.org/0000-0003-0940-7651
  • Joissi Ferrari Zaniboni Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brazil. https://orcid.org/0000-0003-0172-9891
  • Jardel Camilo do Carmo Monteiro Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brazil. https://orcid.org/0000-0001-9389-2754
  • Adirson Jorge Júnior Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brazil. https://orcid.org/0000-0002-9788-525X
  • Milton Carlos Kuga Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia de Araraquara, Departamento de Odontologia Restauradora, Araraquara, SP, Brazil. https://orcid.org/0000-0001-5728-8293

DOI:

https://doi.org/10.4322/bds.2023.e3945

Abstract

Objective: Compare the pH values and calcium ion release of calcium hydroxide-based liner materials before and after light-curing. Material and Methods: The materials evaluated were: hydrox-cal white (HW), hydroxcal dentin (HD), Biocal (BC) and UltraBlend Plus (UB). 120 samples of the liner materials were inserted into a PVC tube (n=15). The samples from HW+A, HD+A, BC+A and UB+A were subjected to photoactivation. The other groups HW+N, HD+N, BC+N and UB+N were only inserted in a glass tube with deionized water. The pH was measured 24 hours and 14 days after the inclusion of the samples with the aid of a pH meter. The calcium release was analyzed with the aid of an atomic absorption spectophotometer at 24h and 14 days. The results were submitted to the Shapiro-Wilk test, followed by ANOVA and Tukey test (p=0.05). Results: In 24h, the groups that were not light cured showed the highest pH values (p<0.05). In 14 days, BC+N and BC+A demonstrated the lowest pH values. The groups that were not light cured also showed higher calcium release values in 24h and 14 days (p<0.05). Conclusion: Photoactivation of calcium hydroxide-based liner materials negatively interferes with calcium ion release, as well as with pH.

KEYWORDS

Acidification; Alkalinization; Calcium hydroxide; Hydrogen-ion concentration; Light-curing.

Downloads

Published

2023-12-13

Issue

Vol. 26 No. 4 (2023): Oct - Dec / 2023 - Published Oct 2023

Section

Clinical or Laboratorial Research

License

COPYRIGHT TRANSFER AND RESPONSIBILITY STATEMENT
 (PDF)

For all articles published in the BDS journal, copyright is retained by the authors. Articles are licensed under an open-access Creative Commons CC BY 4.0 license, meaning that anyone may download and read the paper for free. In addition, the article may be reused and quoted, provided that the original published version is cited. These conditions allow for maximum use and exposure of the work while ensuring that the authors receive proper credit. All metadata associated with published articles is released under the Creative Commons CC0 Universal Public Domain Dedication.

Before the submission, authors must obtain permission to reproduce any published material (figures, schemes, tables, or any extract of a text) that does not fall into the public domain or for which they do not hold the copyright. Permission should be requested by the authors from the copyright holder (usually the Publisher, please refer to the imprint of the individual publications to identify the copyright holder).

The authors hereby attest that the study is original and does not present manipulated data, fraud, or plagiarism. All names listed made a significant scientific contribution to the study, are aware of the presented data, and agree with the final version of the manuscript. They assume complete responsibility for the ethical aspects of the study.

This text must be printed and signed by all authors. The scanned version should be submitted as supplemental file during the submission process.