medigraphic.com
ISSN 1870-199X (Print)
Órgano oficial de la Facultad de Odontología, UNAM

2016, Number 3

<< Back Next >>

Rev Odont Mex 2016; 20 (3)

Elemental chemical composition and phase analysis by means of PIXE, DSC, TGA, and DRX of MTA Angelus® and a white Portland cement

Flores LA, Barceló SFH, Bucio GL, Arenas AJÁ, Ruvalcaba SJL

Language: Spanish
References: 24
Page: 187-192
PDF size: 303.91 Kb.


ABSTRACT

Mineral trioxide aggregate (MTA) is a cement mainly used to seal tooth perforations; this is due to the fact that it hardens when in presence of humidity. It is composed of Portland cement and Bismuth trioxide. Objective: To analyze and compare with PIXE, DSC, TGA and DRX elementary chemical and phase composition of MTA Angelus® cement with a white Portland cement (WPC). Material and methods: MTA Angelus® white and a white Portland cement were analyzed with PIXE in a particle accelerator, phase analyses were conducted with XRD contrasting peaks with those in the ICDD database. DSC was conducted in a calorimeter up to 900 oC. Results: PIXE detected the following as greater percentage elements: aluminum, silica and calcium for both cements. Differences were found with sulfur percentages; Bismuth was only detected in MTA Angelus®. Trace elements of copper and strontium were detected in MTA Angelus® and zirconium in WPC. Relationship between silica-calcium and silica-aluminum was similar in both cements. In both cements, three crystalline phases were detected: dicalcium silicate, tricalcium silicate and tricalcium aluminate. Nevertheless, Bismite was identified in MTA Angelus® and calcium sulfate in the form of gypsum in WPC, this was corroborated with DSC technique. Conclusions: In MTA Angelus®, low gypsum amounts were observed by means of calorimetry. In both cements, crystalline phases and elemental chemical composition were similar.


REFERENCES

  1. Torabinejad M. Physical and chemical properties of a new root-end filling material. J Endod. 1995; 21 (7): 349-353.

  2. Wiltbank KB. Effect of selected accelerant on the physical properties of mineral trioxide agregate and Portland cement. J Endod. 2007; 33 (10): 1235-1238.

  3. Camilleri J. Evaluation of selected properties of mineral trioxide aggregate sealer cement. J Endod. 2009; 35 (10): 1412-1417.

  4. Ford TR, Torabinejad M. Use of mineral trioxide aggregate for repair furcal perforation. O Surg, Oral Med Oral Pathol Oral Radiol Endod. 1995; 79 (6): 756-763.

  5. Moretti AB, Oliveira TM. Mineral trioxide aggregate pulpotomy of a primary second molar in patient with agenesis of the permanent successor. Int Endod J. 2007; 40 (9): 738-745.

  6. Yasuda Y, Ogawa M. The effect of mineral trioxide aggregate on the mineralization ability of rat dental pulp cells: an in vitro study. J Endod. 2008; 34 (9): 1057-1060.

  7. Torabinejad M, White DJ. Tooth filling material and use, United States Patent & Trademark Office; Patent 1995; 5: 769-638.

  8. Camilleri J, Montesin FE. Characterization of Portland cement for use in dental restorative material. Dent Mater. 2006; 22 (6): 569-575.

  9. Oliveira MG, Xavier CB. Comparative chemical study of MTA and Portland cements. Braz Dent J. 2007; 18 (1): 3-7.

  10. Camilleri J, Montesin FE, Di Silvio L, Pitt Ford TR. The Chemical constitution and biocompatibility of accelerated Portland cement for endodontic use. Int Endod J. 2005; 38 (11): 834-842.

  11. Hwang YC, Lee SH. Chemical composition, radiopacity and biocompatibility of Portland cement with bismuth oxide. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007; 107 (3): e96-e102.

  12. Asgary S, Eghbal MJ. Comparison of mineral trioxide aggregate’s composition with Portland cement and a new endodontic cement. J Endod. 2009; 35 (2): 243-250.

  13. Camilleri J. Characterization and chemical activity of Portland cement and two experimental cements with potential for use in dentistry. Int Endod J. 2008; 41 (9): 791-799.

  14. Herrington C. Quantitative EDS and WDS X-ray microanalysis of semiconductors materials: principles and comparison. J Electron Micro Tec. 1985; 2 (5): 471-479.

  15. Belío-Reyes I, Bucio G. Phase composition of ProRoot mineral trioxide aggregate by X-ray powder diffraction. J Endod. 2009; 35 (6): 875-878.

  16. Govil IM. Proton Induced X-ray Emission: A tool for non-destructive trace element analysis. Current Science. 2001; 80: 1542-1549.

  17. Pecharsky VK, Zavalij PY. Fundamentals of power diffraction and structural characterization of materials, 2nd Ed., Spinger, 2003.

  18. Camilleri J. Hydration mechanisms of mineral trioxide aggregate. Int Endod J. 2007; 40: 462-470.

  19. Islam I, Chng HK. X-ray diffraction analysis of mineral trioxide aggregate and Portland cement. Int Endod J. 2006; 39 (3): 220-225.

  20. Powder Diffraction File. Newtown Square, PA: International Centre for Diffraction Data (ICDD); 2007.

  21. García ARL, García GM. Similarities of elemental chemistry and morphology od cements type mineral trioxide aggregate and Portland Cements through the use of scanning electronic microscopy and electron dispersion spectroscopy. Rev Odon Mex. 2014; 18 (2): 105-110.

  22. Rodríguez RAC, Hernández PG, García GM, García ARL. Physicochemical analysis of MTA Angelus® and Biodentine® conducted with X RAy diffraction, dispersive Energy spectrometry, X Ray fluorescence, scanning electron microscope and infra red spectroscopy. Rev Odon Mex. 2015; 19 (3): 174-180.

  23. Tzouvalas G, Dermatas N, Tsimas S. Alternative calcium sulfate-bearing materials as cements retarders. Part I. Anhydrite. Cement and Concrete Research. 2004; 34: 2113-2118.

  24. Tzouvalas G, Dermatas N, Tsimas S. Alternative calcium sulfate-bearing materials as cements retarders. Part II. FGD Gypsum. Cement and Concrete Research. 2004; 34; 2119-2125.




2020     |     www.medigraphic.com