Effect of Quaternary Ammonium Salt on Shear Bond Strength of Orthodontic Brackets to Enamel

  • Hannaneh Ghadirian Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Orthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
  • Allahyar Geramy Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Orthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
  • Farhood Najafi Assistant Professor, Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran
  • Soolmaz Heidari PhD Candidate, Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
  • Hamid Golshahi Postgraduate Student, Department of Orthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
Keywords: Dental Enamel, Shear Strength, Transbond XT Light Cure, Adhesive Primer

Abstract

Objectives: This study sought to assess the effect of quaternary ammonium salt (QAS) on shear bond strength of orthodontic brackets to enamel.

Materials and Methods: In this in vitro experimental study, 0, 10, 20 and 30% concentrations of QAS were added to Transbond XT primer. Brackets were bonded to 60 premolar teeth using the afore-mentioned adhesive mixtures, and the shear bond strength of the four groups (n=15) was measured using a universal testing machine. After debonding, the adhesive remnant index (ARI) score was determined under a stereomicroscope. Data were analyzed using one-way ANOVA.

Results: The mean and standard deviation of shear bond strength of the control and 10%, 20% and 30% groups were 23.54±6.31, 21.81±2.82, 20.83±8.35 and 22.91±5.66 MPa, respectively. No significant difference was noted in shear bond strength of the groups (P=0.83). Study groups were not different in terms of ARI scores (P=0.80).

Conclusions: The results showed that addition of QAS to Transbond XT primer had no adverse effect on shear bond strength of orthodontic brackets.

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Published
2017-10-18
How to Cite
1.
Ghadirian H, Geramy A, Najafi F, Heidari S, Golshahi H. Effect of Quaternary Ammonium Salt on Shear Bond Strength of Orthodontic Brackets to Enamel. Front Dent. 14(3):159-64.
Section
Original Article

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