A gas adsorption porosimetry analysis of Portland cement prepared by compaction vs. compaction with indirect ultrasonic agitation

Autoři

  • Nader Azizi Private Practice
  • Yltze P Cubas University of California, San Francisco
  • Maria F Orellana University of California San Francisco

DOI:

https://doi.org/10.5195/d3000.2014.24

Klíčová slova:

Gas adsorption, porosimetry, Portland cement, compaction with ultrasonic agitation and indirect ultrasonic agitation

Abstrakt

Background: Mineral trioxide aggregate (MTA), is commonly used in endodontic and restorative procedures. Objective: Our objective was to introduce gas adsorption porosimetry as a viable method for evaluation of general porosity and specific pore characteristics of set Portland cement used in substitute for MTA, to investigate the effect of two different obturation methods (compaction and compaction in conjunction with indirect ultrasonic agitation of the cement paste), and to evaluate the correlation between the specific pore characteristics to compressive strength in general. Material and Methods: Portland cement samples were prepared and divided into two groups based on compaction techniques. An initial stereomicroscopic evaluation was done to assess any differences in appearance of pores randomly selected from either of the two experimental groups.  Specific pore characteristics and compressive strength were quantified by a gas adsorption porosimeter and an Instron universal testing machine. A two tailed student t-test was used for statistical comparison of data, and a regression analysis was done to evaluate the correlation between each specific pore characteristic and compressive strength in general. Results: The gas porosimetry method provided measurable values relating to specific pore characteristics of Portland cement.  The stereomicroscopy evaluation revealed marked differences between samples from the two groups, namely visibly larger pores both on the outside surface and in cross-sections of specimens prepared by the indirect ultrasonic activation method.  Conclusions: Gas adsorption porosimetry is a feasible method for evaluation of specific pore characteristics of Portland cement and potentially other dental materials as well.

 

Biografie autora

Yltze P Cubas, University of California, San Francisco

Department of Orofacial Sciences, University of California, San Francisco - Post doctoral Fellow

Maria F Orellana, University of California San Francisco

Director Predoctoral Orthodontic Program, Department of Orofacial Sciences, Division of Orthodontics, University of California, San Fancisco

Reference

Evaluation of setting properties and retention characteristics of mineral trioxide aggregate when used as a furcation perforation repair material. Sluyk SR, Moon PC, Hartwell GR. J Endod. 1998 Nov;24(11):768-71. PMID: 9855831.

A comparison of MTA, Super-EBA, composite and amalgam as root-end filling materials using a bacterial microleakage model. Adamo, HL, Buruiana R, Schertzer L, Boyland RJ. Int Endod J. 1999 May;32(3):197-203. PMID: 10530207.

Leakage evaluation of root end filling materials using endotoxin. Tang HM, Torabinejad M, Kettering JD. J Endod. 2002 Jan;28(1):5-7. PMID: 11806652.

Dye leakage of four root end filling materials: effects of blood contamination. Torabinejad M, Higa RK, McKendry DJ, Pitt Ford TR. J Endod. 1994 Apr;20(4):159-63. PMID: 8035153.

Antibacterial effects of some root end filling materials. Torabinejad M, Hong CU, Pitt Ford TR, Kettering JD. J Endod. 1995 Aug;21(8):403-6. PMID: 7595152.

Reaction of rat connective tissue to implanted dentin tubes filled with a white mineral trioxide aggregate. Holland R1, Souza Vd, Nery MJ, Faraco Júnior IM, Bernabé PF, Otoboni Filho JA, Dezan Júnior E. Braz Dent J. 2002;13(1):23-6. PMID: 11870957.

A comparison of laterally condensed gutta-percha, thermoplasticized gutta-percha, and mineral trioxide aggregate as root canal filling materials. Bogen G. J Endod. 2004 Dec;30(12):826. PMID: 15564859.

A quantitative comparison of the fill density of MTA produced by two placement techniques. Yeung P1, Liewehr FR, Moon PC. J Endod. 2006 May;32(5):456-9. PMID: 16631848.

Porosity-dependence of effective mechanical properties of pore-solid composite materials. Pal R. J Compos Mater. 2005 Jun;39(13):1147-1158.

Flexural strength and porosity of cements. Birchall J, Howard AJ, Kendall K. Nature. 1981 Jan;289:388-390

Bye GC (1999). Portland Cement, 2nd edition: Composition, Production and Properties. United Kingdom:Thomas Telford Ltd. 248 p.

Placement of mineral trioxide aggregate using two different techniques. Aminoshariae A, Hartwell GR, Moon PC. J Endod. 2003 Oct;29(10):679-82. PMID: 14606796.

Comparative chemical study of MTA and Portland cements. Oliveira MG, Xavier CB, Demarco FF, Pinheiro AL, Costa AT, Pozza DH. Braz Dent J. 2007 18(1):3-7. PMID: 17639192.

Microstructure and strength of hydrated cement. Feldman RF, Beaudoin JJ. Cem Concr Res. 1976 May;6(3):398-400.

Mehta PK (1993). Concrete: Structure, Properties, and Materials. New York: Prentice Hall. 704 p.

Relationship between pore structure and mechanical properties of ordinary concrete under bending fatigue. Zhang B. Cem and Concr Res. 1998 May;28(5):699–711.

Compressive strength and pore structure of high-performance concrete after exposure to high temperature up to 800C. Chan Y, Luo X, Sun W. Cem Concr Res. 2000 30(2):247-251.

Asthana R, Kumar A, Dahotre N (2006). Materials Processing and Manufacturing Science, First Edition. United Kingdom: Butterworth-Heinemann. 656 p.

Aligizaki KK (2005). Pore Structure of Cement-Based Materials: Testing, Interpretation and Requirements. Boca Raton: CRC Press, LLC. 432 p.

Determination of pore size distribution and surface area of several materials using mercury porosimetry and gas adsorption. Tian Y, Chen Ke-fu. China Pulp and Paper. 2004-04.

The Characterization of Porous Solids from Gas Adsorption Measurements. Lee CK, Chiang AST, Tsay CS. Key Eng Mater. 1996 115:21-44.

Ultrasonic debridement of root canals: acoustic cavitation and its relevance. 1988. Ahmad M, Pitt Ford TR, Crum LA, Walton AJ. Int Endod J. 2009 May;42(5):391-8. PMID: 19356172.

Stahování

Publikováno

2014-11-03

Číslo

Vol 2 No 1 (2014)

Sekce

Adults & the Elderly

Licence

Authors who publish with this journal agree to the following terms:

  1. The Author retains copyright in the Work, where the term “Work” shall include all digital objects that may result in subsequent electronic publication or distribution.
  2. Upon acceptance of the Work, the author shall grant to the Publisher the right of first publication of the Work.
  3. The Author shall grant to the Publisher and its agents the nonexclusive perpetual right and license to publish, archive, and make accessible the Work in whole or in part in all forms of media now or hereafter known under a Creative Commons Attribution 4.0 International License or its equivalent, which, for the avoidance of doubt, allows others to copy, distribute, and transmit the Work under the following conditions:
    1. Attribution—other users must attribute the Work in the manner specified by the author as indicated on the journal Web site;
    with the understanding that the above condition can be waived with permission from the Author and that where the Work or any of its elements is in the public domain under applicable law, that status is in no way affected by the license.
  4. The Author is able to enter into separate, additional contractual arrangements for the nonexclusive distribution of the journal's published version of the Work (e.g., post it to an institutional repository or publish it in a book), as long as there is provided in the document an acknowledgement of its initial publication in this journal.
  5. Authors are permitted and encouraged to post online a prepublication manuscript (but not the Publisher’s final formatted PDF version of the Work) in institutional repositories or on their Websites prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work. Any such posting made before acceptance and publication of the Work shall be updated upon publication to include a reference to the Publisher-assigned DOI (Digital Object Identifier) and a link to the online abstract for the final published Work in the Journal.
  6. Upon Publisher’s request, the Author agrees to furnish promptly to Publisher, at the Author’s own expense, written evidence of the permissions, licenses, and consents for use of third-party material included within the Work, except as determined by Publisher to be covered by the principles of Fair Use.
  7. The Author represents and warrants that:
    1. the Work is the Author’s original work;
    2. the Author has not transferred, and will not transfer, exclusive rights in the Work to any third party;
    3. the Work is not pending review or under consideration by another publisher;
    4. the Work has not previously been published;
    5. the Work contains no misrepresentation or infringement of the Work or property of other authors or third parties; and
    6. the Work contains no libel, invasion of privacy, or other unlawful matter.
  8. The Author agrees to indemnify and hold Publisher harmless from Author’s breach of the representations and warranties contained in Paragraph 6 above, as well as any claim or proceeding relating to Publisher’s use and publication of any content contained in the Work, including third-party content.

Revised 7/16/2018. Revision Description: Removed outdated link.