Exam 3: Bonding to Dentin Flashcards
smear layer is formed of _________ from the ground dentin that is removed during preparation
denatured collagen and mineral
The cleaning of the surface of dentin is a (less/more challenging step) than the cleaning
of enamel
more challenging
cleaning of dentin is more challenging than enamel d/t ________________ needing to be removed
smear layer of residues from the preparation of the tooth cavity
dentin conditioning with acid does…
- removes smear layer
- demineralizes most superficial hydroxyapatite crystals to expose collagen
Acid etching/conditioning removes hydroxyapatite ~completely from ______ of
sound dentin, _________. This network of
collagen must be ___________
several microns, exposing a microporous network of collagen suspended in water, kept suspended to form the hybrid layer.
After conditioning and removing the smear layer, open clean dentin is a tissue that has a
significant amount of __
water
dentin is a highly _____ substrate
hydrophilic
function of primer, while ____, is…
hydrophilic; removal residual water while maintain an expanded collagen network
primary purpose of adhesive
fill the interfibrillar space of the
collagen network, creating a hybrid layer
after priming, the adhesive is applied ____ the primer and left to slightly mix
with the outer parts of the primer at the ____. Then, primer and adhesive are _____
on top of, interface, light cured together
restorative filling resin composite is applied on top of ____ and ____
the adhesive and light cured
The composite is _____ and, the primer is ______. Challenging property to match in the adhesive is a balanced
____ to properly interact at the ________.
hydrophobic, hydrophilic, hydrophilicity, two interfaces
etch-and-rinse 3 step adhesive system “formula”
etching + primer + adhesive
etch-and-rinse 2 step adhesive system “formula”
etching + primer/adhesive
self etch 2 step adhesive system “formula”
etching/primer + adhesive
