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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
  • First Generation Bonding Adhesives
  • This generation included unfilled acrylic resins and epoxy resins. The first bonding adhesives used in orthodontics was essential unfilled poly (methyl methacrylate) anterior dental restoratives.
  • The unfilled acrylic resins exist as powder – liquid or paste/paste.
  • Powder Contains
  • 1. Poly (Methyl methacrylate).
  • Poly (methyl methacrylate) is a transparent resin of remarkable clarity it transmits light in the ultraviolet range to a wavelength of 250 nm
  • 2. Initiator:
  • Benzoyl peroxide (0.3 to 3%) To start an addition polymerization process, free radicals must be present. Free radicals can be generated by activation of monomer molecules with UV light, visible light, heat or energy transfer.
  • Initiation period is the time during which molecules of the initiator become activated forming free radicals that interact with the monomer molecules.

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