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Orthodontic Resins

  • CONTENTS
  • INTRODUCTION
  • TYPES OF ADHESIVES
  •   1st -5th GENERATION
  •         DUAL CURE RESIN
  •   THERMOCURED RESIN
  • REVIEW OF ARTICLES
  • RECENT ADVANCES
  •     SEP
  •     CYANOACRYLATE
  •     FLUORIDE RELEASING ADHESIVE
  •     ADHESION BOOSTER
  •     HYDROPHILIC PRIMERS
  •     APC
  • REVIEW OF ARTICLES
  • GLASS IONOMER CEMENT
  • DYRACT
  • REVIEW OF ARTICLES
  • ADHESIVES THAT BOND TO CROWNS AND RESTORATIONS
  • DEGRADATION OF POLYMER
  • LEACHING
  • CYTOTOXICITY
  • CONCLUSION
  • FOURTH GENERATION
  • No-mix adhesives
  •   They were intended to minimize the mixing induced defects and to reduce the steps
  •   With these “no-mix” materials, the composite can be placed on the tooth surface in unpolymerized form, while the polymerization catalyst is placed on the back of the brackets. Contact between the bracket and tooth with the intervening adhesive permits inter diffusion of agents such as benzoyl peroxide (initiator) and amine ( activator) from the respective components.
  •   Inhomogeneous polymerization pattern due to sandwich technique involved in diffusion of liquid component into paste during application. Enamel and bracket sides of adhesive are more polymerized relative to middle zones
  •   When the tray carrying the brackets is placed against the tooth surface, the resin immediately beneath the bracket is activated and polymerizes, but excess can be scaled away around the margins of the brackets.

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