The Journal of Contemporary Dental Practice

Register      Login



Volume / Issue

Online First

Related articles

VOLUME 17 , ISSUE 1 ( January, 2016 ) > List of Articles


Morphological Analysis of Dentin Surface after Conditioning with Two Different methods: Chemical and Mechanical

Caroline Freitas Rafael, Valquíria Quinelato, Carolina Schaffer Morsch, Gustavo DeDeus, Claudia Mendonca Reis

Citation Information : Rafael CF, Quinelato V, Morsch CS, DeDeus G, Reis CM. Morphological Analysis of Dentin Surface after Conditioning with Two Different methods: Chemical and Mechanical. J Contemp Dent Pract 2016; 17 (1):58-62.

DOI: 10.5005/jp-journals-10024-1803

Published Online: 01-06-2016

Copyright Statement:  Copyright © 2016; The Author(s).



Alternative pretreatment strategies of dentin and adhesionare constantly being developed and studied with the goal of improving the adhesion of resin restorative materials with this tissue. The objectives of the present study were to evaluate the ability of airborne-particle abrasion (APA) with aluminum oxide on dentin to remove the smear layer and the effects produced on the dentin microstructure.

Materials and methods

The phosphoric acid (PA) was used for a comparison. For that, 20 human third molars were randomly allocated into two experimental groups, according to the dentin pretreatment method used: G1 (N = 10) – PA, G2 (N = 10) – APA. For dentin surface analyses, an environmental scanning electron microscope (ESEM) was employed to observe dentin surfaces before and after the procedures. Before pretreatment, the specimens of both groups were smear covered.


After pretreatment, the G1 images revealed dentin tubule orifices opened, enlarged and some erosive effects. (G2) exposed tubule orifices without enlargement, but crack-like alterations were observed on the surfaces. In this way, APA with aluminum oxide was able to remove the smear layer.


The influences of the dentin roughness on adhesion and the consequences on dentin integrity and hardness need further investigations.

Clinical significance

A good conditioning of the dentin before cementation is necessary in order to obtain a satisfactory rehabilitation in adhesive dentistry. So, it is necessary to know all methods to do it.

How to cite this article

Rafael CF, Quinelato V, Morsch CS, DeDeus G, Reis CM. Morphological Analysis of Dentin Surface after Conditioning with Two Different methods: Chemical and Mechanical. J Contemp Dent Pract 2016;17(1):58-62.

PDF Share
  1. Adhesive dentistry and endodontics. Part 2: bonding in the root canal system-the promise and the problems: a review. J Endod 2006 Dec;32(12):1125-1134.
  2. The effects of tooth preparation cleansing protocols on the bond strength of self-adhesive resin luting cement to contaminated dentin. Oper Dent 2008 Sep-Oct;33(5):556-563.
  3. Micromorphological spectrum of acid conditioned dentin following the application of waterbased adhesive. Dent Mater 1998 Sep;14(5):329-338.
  4. Fatigue behavior of different dentin adhesives. Clin Oral Inves 1999 Mar;3(1):11-17.
  5. Microtensile bond strength of an etch and rinse and self-etch adhesive to enamel and dentin as a function of surface treatment. Oper Dent 2003 Sep-Oct;28(5):647-660.
  6. New developments in dental adhesion. Dent Clin North Am 2007 Apr;51(2):333-357.
  7. Evaluation of the adhesion of fiber posts cemented using different adhesive approaches. Eur J Oral Sci 2008 Dec;116(6):557-563.
  8. The dentin substrate: structure and properties related to bonding. J Dent 1997 Nov;25(6):441-458.
  9. Evaluation of shear bond strength with different enamel pre-treatment. Eur J Orthodont 2004;26:179-184.
  10. Evaluation of the adhesion of fiber posts to intraradicular dentin. Oper Dent 2005 Sep-Oct;30(5):627-635.
  11. Microtensile bond strength and interfacial properties of self-etching and self-adhesive resin cements used to lute composite onlays under different seating forces. J Adhes Dent 2006 Oct;8(5):327-335.
  12. Effect of two fiber post types and two luting cement systems on regional post retention using the push-out test. Dental Mat 2008 Mar;24(3):372-377.
  13. Selfadhesive resin cements: a literature review. J Adhes Dent 2008 Aug;10(4):251-258.
  14. The effect of airborne-particle abrasion on the shear bond strength of four restorative materials to enamel and dentin. J Prost Dent 2004 Sep;92(3):245-249.
  15. Influence of different surface treatment on marginal adaptation in enamel and dentin. J Adhes Dent 2007 Jun;9(3):297-303.
  16. Air-abrasive technology. Its new role in restorative dentistry. J Am Dent Assoc 1994 May;125(5):551-557.
  17. In vitro comparative bond strength of contemporary self-adhesive resin cements to zirconium oxide ceramic with and without air-particle abrasion. Clin Oral Investig 2010 Apr;14(2):187-192.
  18. Fundamentals of fixed prosthodontics. Book reviews. J Prosthodont 1997;6:316-320.
  19. [homepage on internet]. Random Sequence Generator. Dublin: Trinity College Dublin, Department of Computer Science; c1998-2009 [cited 2010 Aug 1] Available from:
  20. Resin tags do not contribute to dentin adhesion in selfetching adhesives. J Adhes Dent 2008 Feb;10(2):97-103.
  21. Lack of correlation between sealer penetration into dentinal tubules and sealability in non-bonded root fillings. Int Endod J 2012 Jul;57(4):642-651.
  22. Critical appraisal of published smear layer-removal studies: methodological issues. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011 Oct;112(4):531-543.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.