Adhesive bonding with 4-META.
Research into improved adhesion of resins to tooth substrates has found that methacrylates with both hydrophobic and hydrophilic groups, like 4-methacryloxyethyl trimellitate anhydride (4-META), enhance monomer penetration into dentin pretreated with 10% citric acid and 3% ferric chloride (10-3). Scanning and transmission electron microscope (SEM and TEM) examinations revealed the formation of a transitional zone of resin-reinforced dentin, termed the hybrid layer. The 4-META adhesive resin impregnated the exposed collagen bundles with which it entangled to create the hybrid, essential to attaining high tensile bond strengths.
Nakabayashi
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Tokyo Medical and Dental University, Japan.
D000180:Acrylic Resins / Q000737:chemistry*; D000818:Animals; D001840:Dental Bonding; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D006801:Humans; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning
D000180:Acrylic Resins; D017220:Dentin-Bonding Agents; C031172:4-META resin