Influence of the Addition of Calcium Hydroxide Powder on Some Physical and Chemical Properties of the Sealer MTA Fillapex
Marcelo Ferrarezi de Andrade, Renato de Toledo Leonardo, Edson Alves de Campos, Milton Carlos Kuga, Marco Antonio Hungaro Duarte, Katia Cristina Keine, Flávia Angélica Guiotti
Citation Information :
de Andrade MF, de Toledo Leonardo R, de Campos EA, Kuga MC, Duarte MA, Keine KC, Guiotti FA. Influence of the Addition of Calcium Hydroxide Powder on Some Physical and Chemical Properties of the Sealer MTA Fillapex. World J Dent 2012; 3 (2):180-183.
This study evaluated the flow, pH and calcium release of MTA Fillapex (G1) or Fillapex plus 10% in weight of calcium hydroxide powder (G2), compared to AH Plus (G3) and Sealapex (G4).
Materials and methods
The flow test was performed according to ISO 6876:2001 requirements. The sealers were placed into plastic tubes and immersed in deionized water. After 24 hours, 7, 14 and 28 days, the water of each tube was removed and tested to evaluate the pH values and the level of released calcium. Calcium release values were analyzed statistically by Kruskal Wallis and Dunn tests and pH values analyzed by ANOVA and Tukey tests (α = 5%).
Results
G1 presented higher flow among all sealers. The addition of 10% calcium hydroxide into MTA Fillapex reduced the flow (p < 0.05) but, in a level, that is lower than the one recommended for ISO norms. G2 and G4 presented pH values and calcium release higher than G3 (p < 0.05) in all periods. G1 presented pH value higher than G3 (p < 0.05), except in 7 days period (p > 0.05). G4 presented higher pH values than G1 and G2, but the calcium release was similar for all periods (p > 0.05). G3 presented lower calcium release among all groups (p < 0.05).
Conclusion
The addition of 10% calcium hydroxide in MTA Fillapex caused reduction in flow and no negative interference in pH and/or calcium release. However, the obtained flow is different from ISO requirements.
Clinical relevance
MTA Fillapex presents levels of flow above the ISO norms. The addition of calcium hydroxide is a suggestion for solving this problem, but the impact of these procedures should be carefully evaluated.
How to cite this article
Keine KC, Guiotti FA, Leonardo RT, Kuga MC, Duarte MAH, de Campos EA, de Andrade MF. Influence of the Addition of Calcium Hydroxide Powder on Some Physical and Chemical Properties of the Sealer MTA Fillapex. World J Dent 2012;3(2):180-183.
Mineral trioxide aggregate: A comprehensive literature review (Part I): Chemical, physical, and antibacterial properties. J Endod 2010 Jan;36(1):16-27.
Physical and chemical properties of a new root-end filling material. J Endod 1995 Jul;21(7):349-53.
Histologic evaluation of pulpotomies in dog using two types of mineral trioxide aggregate and regular and white Portland cements as wound dressings. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2004 Sep;98(3):376-79.
Histological, ultrastructural and quantitative investigations on the response of healthy human pulps to experimental capping with mineral trioxide aggregate: A randomized controlled trial. Int Endod J 2008 Feb;41(2):128-50.
A comparison of four pulpotomy techniques in primary molars: A long-term follow-up. J Endod 2008 Aug;34(8):950-55.
The effect of mineral trioxide aggregate on the apexification and periapical healing of teeth with incomplete root formation. Int Endod J 2006 Jan;39(1):2-9.
Mineral trioxide aggregate: A comprehensive literature review (Part III): Clinical applications, drawbacks, and mechanism of action. J Endod 2010 Mar;36(3):400-13.
Reaction of dogs’ teeth to root canal filling with mineral trioxide aggregate or a glass ionomer sealer. J Endod 1999 Nov;25(11):728-30.
Evaluation of the tissue response to MTA and MBPC: Microscopic analysis of implants in alveolar bone of rats. J Endod 2006 Jun;32(6):556-59.
Dynamic sealing ability of MTA root canal sealer. Int Endod J 2011 Jan;44(1):9-20.
Hydrogen ion and calcium releasing of MTA Fillapex and MTA-based formulations. RSBO 2011 Jul;8(3):271-76.
Antibacterial activity of two MTA-based root canal sealers. INT Endod J 2011 Dec;44(12):1128-33.
Push-out bond strength of two calcium silicate-based endodontic sealers to root canal dentine. Int Endod J 2011 Dec;44(12):1088-91.
A multiparametric assay to compare the cytotoxicity of endodontic sealers with primary human osteoblasts. Int Endod J 2012 Jan;45(1):12-18.
Dentin bond strength of two mineral trioxide aggregate-based and one epoxy resin-based sealers. J Endod 2012 Feb;38(2):219-21.
Influence of the powder/ liquid ratio on the properties of zinc oxide-eugenol-based root canal sealers. Dent Mater 2004 Dec;20(10):915-23.
Tissue reaction of the EndoREZ in root canal fillings short of or beyond an apical foramen like communication. Oral Surg Oral Med Oral Path Oral Rad Endod 2010 May;109(5):e94-e99.
Influence of calcium hydroxide associated on the physical properties of AH Plus. J Endod 2010 Jun;36(6):1048-51.
Determination of pH and calcium ion release provided by pure and calcium hydroxide containing AH Plus. Int Endod J 2004 Jun;37(1):42-45.
ISO-6876 Dental root canal sealing materials. Geneve. International Organization for Standardization 2001.
Evaluation of pH and calcium ion release of three root canal sealers. J Endod 2000 Jul;26(7):389-90.
Mechanism of action of calcium and hydroxyl ions of calcium hydroxide on tissue and bacteria. Braz Dent J 1995;6(2):85-90.
Evaluation of the physical and chemical properties of two commercial and threeexperimental root-end filling materials. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010 Aug;110(2):250-56.
Physical properties of root canal sealers: Measurements of flow, working time, and compressive strength. Int Endod J 1983 Jul;16(3):99-107.
Filling of artificial lateral canals and microleakage and flow of five endodontic sealers. Int Endod J 2007 Sep;40(9):692-99.
Mineral trioxide aggregate-based sealer: Analysis of tissue reactions to a new endodontic material. J Endod 2010 Jul;36(7):1174-78.
