title: Comparative Evaluation of Shear Bond Strength of Three Commercially Available Glass Ionomer Cements in Primary Teeth.
abstract: BACKGROUND
  This study aims to comparatively evaluate the shear bond strength (SBS) of three commercially available glass ionomer cements - Miracle Mix (MM) (GC America Inc., Alsip, USA), Ketac Molar (KM) (3M Corp., Minnesota, USA) and amalgomer CR (AM) (Advanced Healthcare Ltd., Kent, England) in primary teeth and later examine the mode of the adhesive failure at the interface.
  
  
  METHODS
  Totally, 90 extracted sound primary molars were selected, and dentin on the buccal surface of crowns was exposed. Specimens were randomly assigned into three groups according to the restorative materials being tested. SBS tests were performed, and the obtained values were statistically analyzed using ANOVA and Tukey tests (P < 0.05). SBS mean values on were recorded in megapascals (MPa) and the mode of failure was assessed using a scanning electron microscope.
  
  
  RESULTS
  SBS (in MPa) was - MM-5.39, KM-4.84, AM-6.38. The predominant failure mode was cohesive.
  
  
  CONCLUSIONS
  Amalgomer CR exhibited statistically significant higher SBS of 6.38 MPa to primary teeth and has better adhesion to the primary teeth compared to the other test materials and can be considered as a restorative material in pediatric dentistry. However, the results of this study should be corroborated with further investigation to reach a definitive conclusion.
authors.affiliation: Professor, Department of Prosthodontics, AJ Institute of Dental Sciences, Mangalore, Karnataka, India.
authors.forename: S Srinivasa
authors.initials: SS
authors.lastname: Murthy
authors.affiliation: Reader, Department of Pedododntics and Preventive Dentistry, Dayananda College of Dental Sciences, Bengaluru, Karnataka, India.
authors.forename: Gargi S
authors.initials: GS
authors.lastname: Murthy
keywords: Glass ionomer cement; pediatric dentistry; primary tooth; shear bond strength