Evaluation of Shear Bond Strength of Conventional and Resin-Modified Glass Ionomers on Enamel, Dentin and Cementum Surfaces
Introduction: According to appropriate characteristics of glass ionomer cementum and constant increase of its usage in restorative field, so comparison of conventional and resin- modified glass ionomers seems to be useful. This study was designed to determine the shear bond strength of conventional...
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Shahid Sadoughi University of Medical Sciences
2011-11-01
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doaj-ccfa51027fd34121900780a3e29698302020-11-25T00:30:34ZfasShahid Sadoughi University of Medical SciencesMajallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Shahīd Ṣadūqī Yazd2228-57412228-57332011-11-01195610617Evaluation of Shear Bond Strength of Conventional and Resin-Modified Glass Ionomers on Enamel, Dentin and Cementum SurfacesBehniafarAyatollahiDavariMousaviIntroduction: According to appropriate characteristics of glass ionomer cementum and constant increase of its usage in restorative field, so comparison of conventional and resin- modified glass ionomers seems to be useful. This study was designed to determine the shear bond strength of conventional and resin- modified glass Ionomers on enamel, dentin and cementum. Methods: This was an experimental study. Totally 60 molar intact teeth were divided into six groups. In groups A and D the surface of enamel was prepared 1mm, in groups B and E, the preparation was continued until the surface of dentin was exposed and in groups F and C the surface of cementum was only refreshed. In groups A, B, and C conventional glass ionomer and in groups F, E, and D resin-modified glass ionomer was used. For each specimen a plastic cylinder with 2mm diameter and 3mm height was bonded on treated surface and the teeth were filled by the relevant glass ionomer. In groups F, E, and D glass ionomer was light cured for 40 seconds. specimens were loaded to failure in a universal testing machine Then statistical analysis was performed using one- way ANOVA and LSD test (P=0.05). Results: The mean shear bond strength of groups A, B, C, D, E and F were 17.25, 14.77, 15.37, 27.30, 57.80, 23.50 Mpa, respectively. The difference between shear bond strength of groups F, E, and D with groups A, B, and C was statistically significant (P=0/001). Conclusion: The shear bond strength of the resin-modified glass Ionomers was significantly higher than that of conventional glass ionomer in all three surfaces.http://85.185.157.11:6280/jssu/browse.php?a_id=1736&slc_lang=en&sid=1&ftxt=1Glass Ionomer CementsDental CementumDental EnamelDentinResin Cements |
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language |
fas |
format |
Article |
sources |
DOAJ |
author |
Behniafar Ayatollahi Davari Mousavi |
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Behniafar Ayatollahi Davari Mousavi Evaluation of Shear Bond Strength of Conventional and Resin-Modified Glass Ionomers on Enamel, Dentin and Cementum Surfaces Majallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Shahīd Ṣadūqī Yazd Glass Ionomer Cements Dental Cementum Dental Enamel Dentin Resin Cements |
author_facet |
Behniafar Ayatollahi Davari Mousavi |
author_sort |
Behniafar |
title |
Evaluation of Shear Bond Strength of Conventional and Resin-Modified Glass Ionomers on Enamel, Dentin and Cementum Surfaces |
title_short |
Evaluation of Shear Bond Strength of Conventional and Resin-Modified Glass Ionomers on Enamel, Dentin and Cementum Surfaces |
title_full |
Evaluation of Shear Bond Strength of Conventional and Resin-Modified Glass Ionomers on Enamel, Dentin and Cementum Surfaces |
title_fullStr |
Evaluation of Shear Bond Strength of Conventional and Resin-Modified Glass Ionomers on Enamel, Dentin and Cementum Surfaces |
title_full_unstemmed |
Evaluation of Shear Bond Strength of Conventional and Resin-Modified Glass Ionomers on Enamel, Dentin and Cementum Surfaces |
title_sort |
evaluation of shear bond strength of conventional and resin-modified glass ionomers on enamel, dentin and cementum surfaces |
publisher |
Shahid Sadoughi University of Medical Sciences |
series |
Majallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Shahīd Ṣadūqī Yazd |
issn |
2228-5741 2228-5733 |
publishDate |
2011-11-01 |
description |
Introduction: According to appropriate characteristics of glass ionomer cementum and constant increase of its usage in restorative field, so comparison of conventional and resin- modified glass ionomers seems to be useful. This study was designed to determine the shear bond strength of conventional and resin- modified glass Ionomers on enamel, dentin and cementum. Methods: This was an experimental study. Totally 60 molar intact teeth were divided into six groups. In groups A and D the surface of enamel was prepared 1mm, in groups B and E, the preparation was continued until the surface of dentin was exposed and in groups F and C the surface of cementum was only refreshed. In groups A, B, and C conventional glass ionomer and in groups F, E, and D resin-modified glass ionomer was used. For each specimen a plastic cylinder with 2mm diameter and 3mm height was bonded on treated surface and the teeth were filled by the relevant glass ionomer. In groups F, E, and D glass ionomer was light cured for 40 seconds. specimens were loaded to failure in a universal testing machine Then statistical analysis was performed using one- way ANOVA and LSD test (P=0.05). Results: The mean shear bond strength of groups A, B, C, D, E and F were 17.25, 14.77, 15.37, 27.30, 57.80, 23.50 Mpa, respectively. The difference between shear bond strength of groups F, E, and D with groups A, B, and C was statistically significant (P=0/001). Conclusion: The shear bond strength of the resin-modified glass Ionomers was significantly higher than that of conventional glass ionomer in all three surfaces. |
topic |
Glass Ionomer Cements Dental Cementum Dental Enamel Dentin Resin Cements |
url |
http://85.185.157.11:6280/jssu/browse.php?a_id=1736&slc_lang=en&sid=1&ftxt=1 |
work_keys_str_mv |
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