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:: Volume 17, Issue 2 (Foll Text in Persian 2005) ::
J Iran Dent Assoc 2005, 17(2): 68-75 Back to browse issues page
An evaluation on the effects of 37% phosphoric acid and self – etching primer on shear bond strength of enamel
Abdolrahim Davari *1, Hila Hajizadeh, Hasan Sharifikhatoonabadi
1- , rdavari2000@yahoo.com
Abstract:   (29969 Views)

An evaluation on the effects of 37% phosphoric acid and self – etching primer on shear bond strength of enamel

Dr. A. Davari* - Dr. H. Hajizadeh* - Dr. H. Sharifikhatoonabadi**

*- Assistant Professor of Operative Dentistry Dept. - Faculty of Dentistry - Yazd University of Medical Sciences.

**- Dentist.

Background and Aim: The goal of this study was to evaluate the effects of 37% phosphoric acid and self – etching primer on the bond strength of composite resin to enamel.

Materials and Methods: Twenty bovine mandibular incisors were mounted in self – curing acrylic resin, and facial enamel surfaces were ground wet on 600 – grit disc paper. Then specimens were divided into three groups of ten. Different enamel surface treatments were applied as follows: Group A: Etching with 37% phosphoric acid and enamel bonding agent (Colten). Group B: Self – etching bonding agent (Prompt – LP). Group C: Etching with 37% phosphoric acid and self – etching bonding agent (Prompt – LP). After adhesive curing, a column of composite of 2 mm diameter was cured on the surface. After one – week storage and thermocycling, specimens were debonded at a cross – head speed of 1mm/min using an Instron machine. The teeth were examined stereomicroscopically to assess the site of debonding. The data were subjected to one – way ANOVA and LSD test at 0.05 level of significance.

Results: The mean shear bond strength values were 15.4±6.5, 24.8±9.7 and 25.4±11 MPa for groups A, B and C, respectively. The enamel – resin interface was the most common site for bond failure in group A. Cohesive failure, in composite or enamel was more common in groups B and C, respectively. The differences between groups B and C with A was significant but no statistically significant difference was found between groups B and C.

Conclusion: Self – etching agents can be used as alternatives for conventional phosphoric acid enamel treatment.

Key words: Enamel bonding – Self etch – Shear strength

Keywords: Enamel bonding, Self etch, Shear strength
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Type of Study: Research | Subject: General
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Davari A, Hajizadeh H, Sharifikhatoonabadi H. An evaluation on the effects of 37% phosphoric acid and self – etching primer on shear bond strength of enamel. J Iran Dent Assoc. 2005; 17 (2) :68-75
URL: http://jida.ir/article-1-166-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 17, Issue 2 (Foll Text in Persian 2005) Back to browse issues page
Journal of Iranian Dental Association

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This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License 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

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