Journal of Operative Dentistry & Endodontics

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VOLUME 4 , ISSUE 1 ( January-June, 2019 ) > List of Articles

RESEARCH ARTICLE

Time-dependent Evaluation of the pH of Three Different Sealers

Vanilarasu Thirumalai, Nagarajan Geethapriya

Keywords : Bioceramic sealer, Epoxy resin sealer, pH, Root canal sealers

Citation Information : Thirumalai V, Geethapriya N. Time-dependent Evaluation of the pH of Three Different Sealers. J Oper Dent Endod 2019; 4 (1):19-21.

DOI: 10.5005/jp-journals-10047-0069

License: CC BY-NC 4.0

Published Online: 01-12-2019

Copyright Statement:  Copyright © 2019; The Author(s).


Abstract

Aim: The aim of this study was to evaluate the pH of three different sealers—BioRoot RCS, Sealapex, and AH-plus at different time periods. Materials and methods: The diluted sealer was transferred to a clean dry test tube. The pH of the root canal sealers was assessed using a digital pH meter. The measurement was carried out at 37°C fluid temperature for all the samples to simulate the oral temperature. The pH measurements were carried out at the end of mixing time (0 hours), 4 hours, 8 hours, and at 24 hours before renewal of the test liquids. Statistical analysis was done using t test—comparison of two independent means. The statistical analysis was done using the post hoc tests. Results: The results of the study show that all the three sealers tested were alkaline in nature throughout the test periods. All the sealers showed a significant change during the time periods (p < 0.05). AH-plus showed a gradual reduction in pH within the range of 10–10.5. There was a statistically significant change at all time intervals between AH-plus and BioRoot RCS (p < 0.05), but no difference between Sealapex and BioRoot RCS or AH-plus (p > 0.05). Conclusion: All the three sealers used in this study are alkaline in nature, with BioRoot RCS showing the highest pH and AH-plus displaying the lowest with a significant difference between the two. There was no significant difference between BioRoot RCS and Sealapex at all time periods. Clinical significance: The antimicrobial activity of sealer is directly related to pH of sealer. The pH of three sealers—BioRoot RCS, Sealapex, and AH-plus are in the alkaline range up to 24 hours. Bioceramic sealer and Sealapex show the highest pH with no significant difference between them.


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  1. Molander A, Reit C, et al. Microbiological status of root-filled teeth with apical periodontitis. Int Endod J 1998 Jan;31(1):1–7. DOI: 10.1046/j.1365-2591.1998.t01-1-00111.x.
  2. Faria-Júnior NB, Tanomaru-Filho M, et al. Antibiofilm activity, pH and solubility of endodontic sealers. Int Endod J 2013 Aug;46(8):755–762. DOI: 10.1111/iej.12055.
  3. Siqueira Jr JF, Lopes HP. Mechanisms of antimicrobial activity of calcium hydroxide: a critical review. Int Endod J 1999 Sep;32(5): 361–369. DOI: 10.1046/j.1365-2591.1999.00275.x.
  4. Leonardo MR, Da Silva LA, et al. In vitro evaluation of antimicrobial activity of sealers and pastes used in endodontics. J Endod 2000 Jul 1; 26(7):391–394. DOI: 10.1097/00004770-200007000-00003.
  5. Urban K, Neuhaus J, et al. Solubility and pH value of 3 different root canal sealers: a long-term investigation. J Endod 2018 Nov 1; 44(11):1736–1740. DOI: 10.1016/j.joen.2018.07.026.
  6. Sarkar NK, Caicedo R, et al. Physicochemical basis of the biologic properties of mineral trioxide aggregate. J Endod 2005 Feb 1;31(2): 97–100. DOI: 10.1097/01.DON.0000133155.04468.41.
  7. Massi S, Tanomaru-Filho M, et al. pH, Calcium Ion Release, and Setting Time of an experimental Mineral Trioxide Aggregate–based root canal sealer. J Endod 2011 Jun 1;37(6):844–846. DOI: 10.1016/j.joen.2011.02.033.
  8. de Miranda Candeiro GT, Correia FC, et al. Evaluation of radiopacity, pH, release of calcium ions, and flow of a bioceramic root canal sealer. J Endod 2012 Jun 1;38(6):842–845. DOI: 10.1016/j.joen.2012.02.029.
  9. Zhou HM, Shen Y, et al. Physical properties of 5 root canal sealers. J Endod 2013 Oct 1;39(10):1281–1286. DOI: 10.1016/j.joen.2013.06.012.
  10. Duarte MA, de Oliveira Demarchi AC, et al. Evaluation of pH and calcium ion release of three root canal sealers. J Endod 2000 Jul 1; 26(7):389–390. DOI: 10.1097/00004770-200007000-00002.
  11. Poggio C, Dagna A, et al. Solubility and pH of bioceramic root canal sealers: a comparative study. J Clin Exp Dent 2017 Oct;9(10):e1189. DOI: 10.4317/jced.54040.
  12. Kapralos V, Koutroulis A, et al. Antibacterial activity of endodontic sealers against planktonic bacteria and bacteria in biofilms. J Endod 2018 Jan 1;44(1):149–154. DOI: 10.1016/j.joen.2017.08.023.
  13. Athanassiadis B, George GA, et al. A review of the effects of formaldehyde release from endodontic materials. Int Endod J 2015 Sep;48(9):829–838. DOI: 10.1111/iej.12389.
  14. Slutzky-Goldberg I, Slutzky H, et al. Antibacterial properties of four endodontic sealers. J Endod 2008 Jun 1;34(6):735–738. DOI: 10.1016/j.joen.2008.03.012.
  15. Siboni F, Taddei P, et al. Properties of BioRoot RCS, a tricalcium silicate endodontic sealer modified with povidone and polycarboxylate. Int Endod J 2017 Dec;50:e120–e136. DOI: 10.1111/iej.12856.
  16. Colombo M, Poggio C, et al. Biological and physico-chemical properties of new root canal sealers. J Clin Exp Dent 2018 Feb;10(2):e120. DOI: 10.4317/jced.54548.
  17. Khalil I, Naaman A, et al. Properties of tricalcium silicate sealers. J Endod 2016 Oct 1;42(10):1529–1535. DOI: 10.1016/j.joen.2016. 06.002.
  18. Zhang H, Shen Y, et al. Antibacterial activity of endodontic sealers by modified direct contact test against Enterococcus faecalis. J Endod 2009 Jul 1;35(7):1051–1055. DOI: 10.1016/j.joen.2009.04.022.
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