Effect of Mechanical Disturbances During and After Acid Etching on Shear Bond Strength

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Authors

  • Ramkishore Ratre
     ,IN
  • Sandhya Jain
     Department of Orthodontics, Government College of Dentistry, Indore, M.P. ,IN

Keywords:

Bonding, Composite Resin, Etching, Mechanical Disturbance, Shear Bond Strength
Orthodontics

Abstract

Objectives: To study the effect of mechanical disturbances during and after acid etching on shear bond strength and their debonding characteristics.

Materials and methods: An in vitro study was performed taking 60 extracted human first premolars divided equally in three groups. Samples in Group A were bonded according to manufacturer instructions; in Group B, they were etched by rubbing a sponge that contained 37% orthophosphoric acid over the enamel for 15 s, and then bonded, and in Group C they were etched for 15 s, washed and air dried. After etching and drying, they were rubbed with a dry sponge for 5 s and then bonded. Shear bond strength testing was performed.

Results: The differences in bond strengths and adhesive remnant index (ARI) scores between the groups were assessed by one-way ANOVA test and Post hoc Tukey test. Both the tests revealed statistically significant differences for bond strengths and ARI scores. Group A shows higher values for bond strength (13.825 MPa) as compared with Group B (12.996 MPa) and Group C (10.146 MPa). Group A shows higher values for ARI (3.89) as compared with Group B (3.55) and Group C (1.8).

Conclusion: Mechanical disturbances during and after acid etching reduce the shear bond strength of composite resin. Etchant and primer should be applied on the tooth surface by dabbing the solutions.

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Published

2018-09-11

How to Cite

Ratre, R., & Jain, S. (2018). Effect of Mechanical Disturbances During and After Acid Etching on Shear Bond Strength. Journal of Pierre Fauchard Academy (India Section), 29(4), 77–81. Retrieved from https://informaticsjournals.co.in/index.php/jpfa/article/view/22208

Issue

Volume 29, Issue 4, December 2015

Section

Original Articles

License

All the articles published in JPFA are distributed under a creative commons license. The journal allows the author(s) to hold the copyright of their work (all usages allowed except for commercial purpose).

 

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