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Evaluation of Shear Bond Strength of Orthodontic Brackets Bonded with Nano-Filled Composites

OBJECTIVES: The purpose of this study was to evaluate the shear bond strength (SBS) of orthodontic brackets bonded with two types of nano-composites in comparison to a conventional orthodontic composite. MATERIALS AND METHODS: Sixty extracted human first premolars were randomly divided into 3 groups...

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Autores principales: Chalipa, Javad, Akhondi, Mohammad Sadegh Ahmad, Arab, Sepideh, Kharrazifard, Mohammad Javad, Ahmadyar, Maryam
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Tehran University of Medical Sciences 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4025415/
https://www.ncbi.nlm.nih.gov/pubmed/24910655
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author Chalipa, Javad
Akhondi, Mohammad Sadegh Ahmad
Arab, Sepideh
Kharrazifard, Mohammad Javad
Ahmadyar, Maryam
author_facet Chalipa, Javad
Akhondi, Mohammad Sadegh Ahmad
Arab, Sepideh
Kharrazifard, Mohammad Javad
Ahmadyar, Maryam
author_sort Chalipa, Javad
collection PubMed
description OBJECTIVES: The purpose of this study was to evaluate the shear bond strength (SBS) of orthodontic brackets bonded with two types of nano-composites in comparison to a conventional orthodontic composite. MATERIALS AND METHODS: Sixty extracted human first premolars were randomly divided into 3 groups each containing 20 teeth. In group I, a conventional orthodontic composite (Transbond XT) was used to bond the brackets, while two nano-composites (Filtek TM Supreme XT and AELITE Aesthetic Enamel) were used in groups II and III respectively. The teeth were stored in distilled water at 37°C for 24 hours, thermocycled in distilled water and debonded with a universal testing machine at a crosshead speed of 1 mm/min. The adhesive remnant index (ARI) was also evaluated using a stereomicroscope. RESULTS: AELITE Aesthetic Enamel nano-composite revealed a SBS value of 8.44±2.09 MPa, which was higher than Transbond XT (6.91±2.13) and Filtek TM Supreme XT (6.04±2.01). Statistical analysis revealed a significant difference between groups II and III (P < 0.05). No significant difference was found between groups I and III, and between groups I and II (P > 0.05). Evaluation of ARI showed that Transbond XT left fewer adhesive remains on teeth after debonding. CONCLUSION: Results of this study indicate that the aforementioned nano-composites can be successfully used for bonding orthodontic brackets.
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spelling pubmed-40254152014-06-06 Evaluation of Shear Bond Strength of Orthodontic Brackets Bonded with Nano-Filled Composites Chalipa, Javad Akhondi, Mohammad Sadegh Ahmad Arab, Sepideh Kharrazifard, Mohammad Javad Ahmadyar, Maryam J Dent (Tehran) Original Article OBJECTIVES: The purpose of this study was to evaluate the shear bond strength (SBS) of orthodontic brackets bonded with two types of nano-composites in comparison to a conventional orthodontic composite. MATERIALS AND METHODS: Sixty extracted human first premolars were randomly divided into 3 groups each containing 20 teeth. In group I, a conventional orthodontic composite (Transbond XT) was used to bond the brackets, while two nano-composites (Filtek TM Supreme XT and AELITE Aesthetic Enamel) were used in groups II and III respectively. The teeth were stored in distilled water at 37°C for 24 hours, thermocycled in distilled water and debonded with a universal testing machine at a crosshead speed of 1 mm/min. The adhesive remnant index (ARI) was also evaluated using a stereomicroscope. RESULTS: AELITE Aesthetic Enamel nano-composite revealed a SBS value of 8.44±2.09 MPa, which was higher than Transbond XT (6.91±2.13) and Filtek TM Supreme XT (6.04±2.01). Statistical analysis revealed a significant difference between groups II and III (P < 0.05). No significant difference was found between groups I and III, and between groups I and II (P > 0.05). Evaluation of ARI showed that Transbond XT left fewer adhesive remains on teeth after debonding. CONCLUSION: Results of this study indicate that the aforementioned nano-composites can be successfully used for bonding orthodontic brackets. Tehran University of Medical Sciences 2013-09 2013-09-30 /pmc/articles/PMC4025415/ /pubmed/24910655 Text en Copyright © Dental Research Center, Tehran University of Medical Sciences http://creativecommons.org/licenses/by-nc/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution NonCommercial 3.0 License (CC BY-NC 3.0), which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
spellingShingle Original Article
Chalipa, Javad
Akhondi, Mohammad Sadegh Ahmad
Arab, Sepideh
Kharrazifard, Mohammad Javad
Ahmadyar, Maryam
Evaluation of Shear Bond Strength of Orthodontic Brackets Bonded with Nano-Filled Composites
title Evaluation of Shear Bond Strength of Orthodontic Brackets Bonded with Nano-Filled Composites
title_full Evaluation of Shear Bond Strength of Orthodontic Brackets Bonded with Nano-Filled Composites
title_fullStr Evaluation of Shear Bond Strength of Orthodontic Brackets Bonded with Nano-Filled Composites
title_full_unstemmed Evaluation of Shear Bond Strength of Orthodontic Brackets Bonded with Nano-Filled Composites
title_short Evaluation of Shear Bond Strength of Orthodontic Brackets Bonded with Nano-Filled Composites
title_sort evaluation of shear bond strength of orthodontic brackets bonded with nano-filled composites
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4025415/
https://www.ncbi.nlm.nih.gov/pubmed/24910655
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