Bonding Flashcards
How long do you etch the preparation?
20 seconds
Do you rinse after etching?
yes, then dry (but don’t desiccate)
After etching, rinsing, and drying: place capsule in an ________ and express the material _____ into the tooth preparation.
applicator gun
directly
______ the material with hand instruments before set is complete.
shape
Light cure for ______.
40 seconds
Trim restoration with finishing burs on ______ speed.
high speed (with HVE suction and water spray)
True or False: Teeth used during this procedure were to be thrown in the waste basket.
False, you gave them back to the instructor
Do not use composites when the operating field ______.
cannot be kept adequately dry
Why can’t composite be used in a wet field?
saliva and blood contamination significantly reduces bond strength
True or False: We should be using a rubber dam for posterior composite restorations when they are difficult to isolate.
False, we should use rubber dam isolation for ALL posterior composites
Gross caries and cleaning of tooth walls should be done with the ______ handpiece. Soft carious dentin should be removed with ________ bur in the _______.
highspeed
round
slowspeed handpiece
True or False: Partial excavation of deep caries has clinical advantage over complete caries removal in the management of dentinal caries.
True!it results in fewer pulp exposures compared to complete excavations
True or False: there is some evidence of signs/symptoms differences related to partial vs complete caries excavation.
False, no evidence of a difference
If the tooth is vital and asymptomatic, stop excavating after you are _____% through dentin to avoid pulp exposure.
75
Using resin composite material, a thin layer of vitrebond is applied to the pulpal floor. How thin?
~0.5 mm
How long is the Vitrebond light cured?
30 seconds
______ acid etchant should be applied to enamel first, then dentin.
phosphoric
How long should the etchant remain on the tooth structure?
15 seconds
then rinse for ten seconds, dry slightly
Optibond Solo Plus (what we used) is a single component adhesive. What does this mean?
primer + bonding agent in one
True or False: Optibond Solo Plus is more viscous than other brands.
True, its 15% filled with 0.4 micron fillers
How long is optibond applied to the enamel and dentin? What is done next?
15 seconds….then air thin for 3 seconds….light cure for 20 seconds…..place composite in 2 mm increments…..light cure for 20-40 seconds
True or False: Darker shades of composite require shorter time to polymerize under the light.
False, longer
True or False: GC Fuji II LC (glass ionomer) capsules are placed into the high speed amalgamator for 30 seconds.
False, only for 10 seconds
For glass ionomer, the restoration should be slightly ______, then light cured, then trimmed and finished.
overfilled
