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:: Volume 26, Issue 2 (4-2014) ::
J Iran Dent Assoc 2014, 26(2): 107-113 Back to browse issues page
Comparison of Shear Bond Strength of Orthodontic Brackets Bonded with Core Max II and Transbond XT in Fluorosed Teeth and Evaluation of Enamel Damage after Debonding
Hamid reza Fattahi1 , Vahid Moshgelgosha2 , Hamid reza Pakshir3 , Navid Naseri4 , Tahereh Baheri Moghadam * 5
1- Associate Professor, Department of Orthodontic, School of Dentistry, Shiraz University of Medical Sciences. Shiraz, Iran
2- Assistant Professor, Department of Orthodontic, School of Dentistry, Shiraz University of Medical Sciences. Shiraz, Iran
3- Professor, Department of Orthodontic, School of Dentistry, Shiraz University of Medical Sciences. Shiraz, Iran
4- Orthodontist and Member of Orthodontic Research Center, Department of Orthodontic, School of Dentistry, Shiraz University of Medical Sciences. Shiraz, Iran
5- Assistant Professor, Department of Orthodontic, School of Dentistry, Yasuj University of Medical Sciences. Yasuj, Iran , t_baheri@yahoo.com
Abstract:   (7125 Views)

  Background and Aim : Orthodontic bracket bonding may encounter difficulties in fluorosed teeth. The aims of this study were to compare the shear bond strength (SBS) of brackets bonded to fluorosed teeth with Core Max II and Transbond XT and to assess the enamel damage after debonding .

  Materials and Methods : In this in-vitro study, 60 fluorosed (TFI=4 and 5) and non-fluorosed teeth were divided into two subgroups. The standard edgewise metallic brackets were bonded to the teeth with Transbond XT in the first and third groups, and with Core Max II in the remaining groups. After bonding, the SBS of the brackets was tested with a universal testing machine.

  The obtained data were analyzed by two-way ANOVA, post-hoc (LSD), Kruskal-Wallis, Wilcoxon, and paired samples tests .

  Results : Fluorosis significantly reduced SBS ( P =0.041). Core Max II significantly increased SBS ( P =0.040). Teeth in group 4 (fluorosis and Transbond XT) had the lowest SBS (13.44±1.69 MPa) group 2 (fluorosis and Core Max II) showed the highest enamel damage .

  Conclusion : Core Max II is a good adhesive for orthodontic bracket bonding in fluorosed teeth but conservative debonding methods should be necessarily applied to decrease enamel damage . 

Keywords: Dental fluorosis, Enamel, Orthodontic adhesive, Shear bond strength
Full-Text [PDF 188 kb]   (2320 Downloads)    
Type of Study: Original | Subject: Orthodontics
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Fattahi H R, Moshgelgosha V, Pakshir H R, Naseri N, Baheri Moghadam T. Comparison of Shear Bond Strength of Orthodontic Brackets Bonded with Core Max II and Transbond XT in Fluorosed Teeth and Evaluation of Enamel Damage after Debonding. J Iran Dent Assoc 2014; 26 (2) :107-113
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Volume 26, Issue 2 (4-2014) Back to browse issues page
Journal of Iranian Dental Association

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