Storage effect on the bond strength of orthodontic metal brackets bonded by three types of adhesive generations

The effect of food simulants on the bond strength of orthodontic metal brackets bonded to enamel with light cured composite was studied. One hundred twenty extracted human premolars were selected and randomly divided into three equal groups each with 40 teeth, representing the adhesive bonding generation (5th, 6th and 7th). Each group was subdivided in to two subgroups which represented the storage media, which are distilled water (DW) and 75% aqueous ethanol (Food simulating solution-FSS). Then the storage media group was subdivided into two subgroups with 10 teeth each, representing two storage periods (1 day and 30 days).At the end of the storage period in the immersion media the brackets were debonded by an Instron universal testing machine to measure the shear bond strength.It was found immersion in the food simulants for 30 days significantly reduces the bond strength of light cured composite brackets.

[1]  D. Millett,et al.  Bonded molar tubes--an in vitro evaluation. , 2009, The Angle orthodontist.

[2]  A. Ozkomur,et al.  The effect of food simulants on porcelain-composite bonding. , 2007, Dental materials : official publication of the Academy of Dental Materials.

[3]  R. Moraes,et al.  Influence of ethanol concentration on softening tests for cross-link density evaluation of dental composites , 2007 .

[4]  T. G. Bradley,et al.  A comparison of bond strength between direct- and indirect-bonding methods. , 2006, The Angle orthodontist.

[5]  B. Kahl-Nieke,et al.  Effect of debonding force direction on orthodontic shear bond strength. , 2006, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[6]  J De Munck,et al.  Monomer-Solvent Phase Separation in One-step Self-etch Adhesives , 2005, Journal of dental research.

[7]  Hidehiko Sano,et al.  In vitro degradation of resin-dentin bonds analyzed by microtensile bond test, scanning and transmission electron microscopy. , 2003, Biomaterials.

[8]  G. Vanherle,et al.  Four-year Water Degradation of Total-etch Adhesives Bonded to Dentin , 2003, Journal of dental research.

[9]  P. Spencer,et al.  Adhesive phase separation at the dentin interface under wet bonding conditions. , 2002, Journal of biomedical materials research.

[10]  M. Miyazaki,et al.  Analysis of the dentin-resin interface by use of laser Raman spectroscopy. , 2002, Dental materials : official publication of the Academy of Dental Materials.

[11]  A. Yap,et al.  Chemical degradation of composite restoratives. , 2001, Journal of oral rehabilitation.

[12]  J. Middleton,et al.  The Influence of Bracket Base Design on the Strength of the Bracket–Cement Interface , 2000, Journal of orthodontics.

[13]  S. D. Hogg,et al.  The effect of food simulants on enamel-composite bond strength. , 2000, Journal of orthodontics.

[14]  J. Tagami,et al.  Long-term Durability of Dentin Bonds Made with a Self-etching Primer, in vivo , 1999, Journal of dental research.

[15]  Y. Shih,et al.  Leached components from dental composites in oral simulating fluids and the resultant composite strengths. , 1998, Journal of oral rehabilitation.

[16]  P. Cleaton-jones,et al.  Electrothermal bonding: shear bond strength of orthodontic brackets after two weeks. , 1998, British Journal of Orthodontics.

[17]  E. Greener,et al.  Detection of leached moieties from dental composites in fluids simulating food and saliva. , 1995, Dental materials : official publication of the Academy of Dental Materials.

[18]  H. J. Mueller,et al.  Effect of food and oral simulating fluids on structure of adhesive composite systems. , 1995, Journal of dentistry.

[19]  H. J. Mueller,et al.  Effect of food and oral simulating fluids on dentine bond and composite strength. , 1994, Journal of dentistry.

[20]  S. Kalachandra.  Influence of fillers on the water sorption of composites. , 1989, Dental materials : official publication of the Academy of Dental Materials.

[21]  Wen-Li Wu,et al.  Chemical Softening and Wear of Dental Composites , 1985, Journal of dental research.

[22]  E. Asmussen.  Softening of BISGMA-based polymers by ethanol and by organic acids of plaque. , 1984, Scandinavian journal of dental research.

[23]  A. Ritter.  Dental adhesives. , 2006, Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.].

[24]  F. Tay,et al.  Dental adhesives of the future. , 2002, The journal of adhesive dentistry.

[25]  J. Gallo,et al.  Shear bond strength of four filled dentin bonding systems. , 2001, Operative dentistry.

[26]  P. Lambrechts,et al.  Microtensile bond strength of eleven contemporary adhesives to dentin. , 2001, The journal of adhesive dentistry.

[27]  M. Polack,et al.  Adhesion of a compomer to dental structures. , 1997, Quintessence international.