Class III, IV, and Class V Composite Restoration Flashcards
Select shade first
◦ before tooth is
dehydrated, excessively dried, or isolated with rubber dam.
Don’t — when taking the shade.
Don’t shine overhead light on tooth
Can cure some composite on the tooth to check the shade
◦ Do not
etch nor bond prior to this step
Steps in composite resin restoration
Acid Etch
◦ Rinse/dry
Prime (often included in bond step)
Bond/Adhesive
◦ Light cure
Place Composite
◦ Light cure
Acid Etch increases
surface area
Adhesive penetrates etched enamel
◦ creating
micromechanical bond
Etch
◦ enamel for — seconds
◦ dentin for — seconds.
◦ order
20-30
15
Apply etchant to enamel first; 15 seconds later apply it to the dentin then wash
off the enamel and dentin at the same time.
Rinse thoroughly — seconds.
15
Dry enamel with an
air syringe.
May selective etch ENAMEL ONLY
20-30 seconds, rinse, dry
◦ When using appropriate bond agent (e.g. Adhese, but any Universal)
Consideration when etching and
bonding Do not etch the adjacent tooth
(2)
◦ Teeth can be bonded together.
◦ May have to use a saw to open the contact
if the tooth gets contaminated with saliva re-etch for — seconds and then rinse
again and dry until frosted enamel appearance is present.
10
Consideration with fluoridated teeth Teeth rich in fluoride require longer etching times because
fluoridated teeth are more
resistant to acid
◦ That is why they have less tooth decay
◦ fluoridated teeth are resistant to the lactic acid produced by bacteria
Primer
(3)
◦ Hydrophilic monomers in solvent
◦ Draws adhesive in
◦ This step is included with adhesive in our clinic
Bond
(2)
◦ Resin bonding agent
◦ Also referred to as “adhesive”
The thin bonding agent engages the etched enamel through a
micro-mechanical bond.
