Shear Bond Strength of an Etch-and-rinse Adhesive to Er:YAG Laser- and/or Phosphoric Acid-treated Dentin
Background and aims. Er:YAG laser irradiation has been claimed to improve the adhesive properties of dentin; therefore, it has been proposed as an alternative to acid etching. The aim of this in vitro study was to investigate the shear bond strength of an etch-and-rinse adhesive system to dentin s...
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doaj-8ec87e5df62a4f75b1ea6002557da9202020-11-25T00:35:19ZengTabriz University of Medical SciencesJournal of Dental Research, Dental Clinics, Dental Prospects2008-210X2008-21182013-06-0172677310.5681/joddd.2013.012Shear Bond Strength of an Etch-and-rinse Adhesive to Er:YAG Laser- and/or Phosphoric Acid-treated Dentin Abdolrahim Davari0Mostafa Sadeghi1Hamid Bakhshi2Associate Professor, Department of Restorative Dentistry, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran Professor, Department of Restorative Dentistry, Faculty of Dentistry, Rafsanjan University of Medical Sciences, Rafsanjan, IranInstructor, Medical Education Development Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran Background and aims. Er:YAG laser irradiation has been claimed to improve the adhesive properties of dentin; therefore, it has been proposed as an alternative to acid etching. The aim of this in vitro study was to investigate the shear bond strength of an etch-and-rinse adhesive system to dentin surfaces following Er:YAG laser and/or phosphoric acid etching. Materials and methods. The roots of 75 sound maxillary premolars were sectioned below the CEJ and the crowns were embedded in auto-polymerizing acrylic resin with the buccal surfaces facing up. The buccal surfaces were ground using a diamond bur and polished until the dentin was exposed; the samples were randomly divided into five groups (n=15) according to the surface treatment: (1) acid etching; (2) laser etching; (3) laser etching followed by acid etching; (4) acid etching followed by laser etching and (5) no acid etching and no laser etching (control group). Composite resin rods (Point 4, Kerr Co) were bonded to treated dentin surfaces with an etch-and-rise adhesive system (Optibond FL, Kerr Co) and light-cured. After storage for two weeks at 37°C and 100% humidity and then thermocycling, bond strength was measured with a Zwick Universal Testing Machine at a crosshead speed of 1 mm/min. Data was analyzed using parametric and non-parametric tests (P<0.05). Results. Mean shear bond strength for acid etching (20.1±1.8 MPa) and acid+laser (15.6±3.5 MPa) groups were significantly higher than those for laser+acid (15.6±3.5 MPa), laser etching (14.1±3.4 MPa) and control (8.1±2.1 MPa) groups. However, there were no significant differences between acid etching and acid+laser groups, and between laser+acid and laser groups. Conclusion. When the cavity is prepared by bur, it is not necessary to etch the dentin surface by Er:YAG laser following acid etching and acid etching after laser etching. http://dentistry.tbzmed.ac.ir/joddd/index.php/joddd/article/view/517/287Acid etchingadhesionEr:YAG laseretch-and-rinse adhesiveshear bond strength |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Abdolrahim Davari Mostafa Sadeghi Hamid Bakhshi |
spellingShingle |
Abdolrahim Davari Mostafa Sadeghi Hamid Bakhshi Shear Bond Strength of an Etch-and-rinse Adhesive to Er:YAG Laser- and/or Phosphoric Acid-treated Dentin Journal of Dental Research, Dental Clinics, Dental Prospects Acid etching adhesion Er:YAG laser etch-and-rinse adhesive shear bond strength |
author_facet |
Abdolrahim Davari Mostafa Sadeghi Hamid Bakhshi |
author_sort |
Abdolrahim Davari |
title |
Shear Bond Strength of an Etch-and-rinse Adhesive to Er:YAG Laser- and/or Phosphoric Acid-treated Dentin |
title_short |
Shear Bond Strength of an Etch-and-rinse Adhesive to Er:YAG Laser- and/or Phosphoric Acid-treated Dentin |
title_full |
Shear Bond Strength of an Etch-and-rinse Adhesive to Er:YAG Laser- and/or Phosphoric Acid-treated Dentin |
title_fullStr |
Shear Bond Strength of an Etch-and-rinse Adhesive to Er:YAG Laser- and/or Phosphoric Acid-treated Dentin |
title_full_unstemmed |
Shear Bond Strength of an Etch-and-rinse Adhesive to Er:YAG Laser- and/or Phosphoric Acid-treated Dentin |
title_sort |
shear bond strength of an etch-and-rinse adhesive to er:yag laser- and/or phosphoric acid-treated dentin |
publisher |
Tabriz University of Medical Sciences |
series |
Journal of Dental Research, Dental Clinics, Dental Prospects |
issn |
2008-210X 2008-2118 |
publishDate |
2013-06-01 |
description |
Background and aims. Er:YAG laser irradiation has been claimed to improve the adhesive properties of dentin; therefore,
it has been proposed as an alternative to acid etching. The aim of this in vitro study was to investigate the shear bond
strength of an etch-and-rinse adhesive system to dentin surfaces following Er:YAG laser and/or phosphoric acid etching.
Materials and methods. The roots of 75 sound maxillary premolars were sectioned below the CEJ and the crowns were
embedded in auto-polymerizing acrylic resin with the buccal surfaces facing up. The buccal surfaces were ground using a
diamond bur and polished until the dentin was exposed; the samples were randomly divided into five groups (n=15) according
to the surface treatment: (1) acid etching; (2) laser etching; (3) laser etching followed by acid etching; (4) acid etching
followed by laser etching and (5) no acid etching and no laser etching (control group). Composite resin rods (Point 4, Kerr
Co) were bonded to treated dentin surfaces with an etch-and-rise adhesive system (Optibond FL, Kerr Co) and light-cured.
After storage for two weeks at 37°C and 100% humidity and then thermocycling, bond strength was measured with a Zwick
Universal Testing Machine at a crosshead speed of 1 mm/min. Data was analyzed using parametric and non-parametric tests
(P<0.05).
Results. Mean shear bond strength for acid etching (20.1±1.8 MPa) and acid+laser (15.6±3.5 MPa) groups were significantly
higher than those for laser+acid (15.6±3.5 MPa), laser etching (14.1±3.4 MPa) and control (8.1±2.1 MPa) groups.
However, there were no significant differences between acid etching and acid+laser groups, and between laser+acid and
laser groups.
Conclusion. When the cavity is prepared by bur, it is not necessary to etch the dentin surface by Er:YAG laser following
acid etching and acid etching after laser etching. |
topic |
Acid etching adhesion Er:YAG laser etch-and-rinse adhesive shear bond strength |
url |
http://dentistry.tbzmed.ac.ir/joddd/index.php/joddd/article/view/517/287 |
work_keys_str_mv |
AT abdolrahimdavari shearbondstrengthofanetchandrinseadhesivetoeryaglaserandorphosphoricacidtreateddentin AT mostafasadeghi shearbondstrengthofanetchandrinseadhesivetoeryaglaserandorphosphoricacidtreateddentin AT hamidbakhshi shearbondstrengthofanetchandrinseadhesivetoeryaglaserandorphosphoricacidtreateddentin |
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1725309042568462336 |