dentine and enamel bonding
No description yet. This curated deck is ready for daily study.
Card preview (5)
why are bonding systems used? and when may they be used?
decrease micro-leakage decrease sound tissue removal application of orthodontic brackets treat tooth defects and anatomy imperfections application of bridges
how does dentine bonding differ from enamel bonding?
enamel bonding is simpler as it is more inorganic - engage microporosities dentine is tougher to bond to due to it being more organic • also pulpal risk • smear layer removal or incorporation needed wets dentine and widens tubules for resin tags
what is acid etch? what does it do? p/c?
30-40% phosphoric acid applied to enamel and dentine that creates 10-15um microporosities to facilitate bonding cons include enamel and fluoride loss and increased tooth porosity
what does an all in one etch and bond consist of?
etchant hydrophilic primer adhesive
how does an all in one etch and prime work?
etchant corrodes hydroxyapatite crystals and removes smear layer after a 3in1 has been sprayed post use. hydrophilic primer attracts water out of dentinal tubules to allow for deeper composite tag penetration an adhesive that creates a hybrid later on the floor of the cavity.