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Dentin bonding
agents
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or Primers:
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Smear layer
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Etch
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Hydrophillic and
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hydrophobic
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component (HEMA)
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Enamel adhesives
or
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bonding agents:
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Hydrophobic resin
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such as Bis-GMA
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Hybrid layer-
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copolymerized
layer
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of primer,
bonding
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resin and
collagen
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