Cementation Flashcards
T/F: FIRST – If you did a lot of adjusting to the temporary
at the previous appointment, causing it to be more
than slightly different than the previous matrix, a new
matrix of the temp can and should be made of the
temporary, to save you time in case you need to
remake the temp due to breakage in the process of
removing it.
True
-Using Curved Hemostat, gently rock the
temporary back and forth to break the
cement seal.
-Care should be taken to grasp the temporary in
a manner in which the temporary is not likely
to break.
-Clean out the inside of the temporary, disinfect
it, and set it aside.
Removing the temp
______ When do you make sure you have either the
temporary matrix or take a new one.
ALWAYS
-If the temp does not come off, you may need to
________ the temp in order to try in
the framework
gently section off
Special care should be taken when removing a
temporary on teeth with an RCT, or Post, or
Build Up.
IF the temporary does not come off easily, or
you are concerned at all about the
materials and their stability under the temp,
________ the temp.
SECTION off
Once the temporary is removed:
-Clean off any excess cement chunks
-Clean the tooth preparations with
________
pumice slurry.
Evaluate the framework/final prosthesis
Any needs for remake or alteration
Make any adjustments ____ to patient appointment
prior
Check the framework _____ to the patient coming into the office.
PRIOR
-Use _______ or similar to check internal
surface.
-Adjust any ”positive” areas
-Only minor adjustments should be made in the
internal surface.
“Fit Checker”
A _______ defect means there is too much
framework material, and this can be polished
away with a stone or rubber wheel to see if this
allows the rock to disappear
“positive”
A ______ defect means you have an open
margin and a new impression will need to be
taken.
“negative”
-If the Contacts are appropriate
-If the Internal surface is not hindering seat
-Then the Framework may be distorted.
What do you do?
-Section the framework through a connector
-Evaluate each retainer separately
-If individually, each retainer fits, move forward with
solder technique
-If individually, either retainer still wobbles or rocks,
take a new impression
When should the shade be confirmed in the delivery of the crown?
Framework try-in
When do you take radiographs in the framework try in and porcelain try ins?
After framework has shown to fit before sending back to lab for porcelain
Before cementation
If the proximal contacts are not there, what do you do?
Send it back to lab to add more porcelain
Final step prior to cementation is _______.
polishing/finishing
Metal adjustments can be polished like Gold. ______ polishers work very well. Two step polishing.
Brown and
Green polishers
If it is necessary to smooth or polish at the Metal-Ceramic
junction:
-the burr/stone should be held ______ to the junction
otherwise, the metal particles contaminate the
porcelain decreasing the esthetics.
perpendicular
Polishing Porcelain:
-Margin adjustment should be made
_______ to the margin and rotation of
polisher should be _______ bulk of material
perpendicular; toward
Polish _____ with diamond rubber
points and then a fine diamond
impregnated polishing paste
porcelain
The word ‘_____ implies the
use of a moldable substance to seal a space or to
cement two components together
luting’
\_\_\_\_\_\_ Cement Characteristics: Advantages: -Adhesion to tooth substance and alloys -Easy manipulation -Strength -Solubility -Film Thickness properties comparable to Zinc Phosphate -Fluoride release Disadvantages: -Needs accurate proportioning -Critical manipulation -Lower Compressive strength -Greater viscoelasticity than Zinc Phosphate -Short working time -Clean surfaces needed for best adhesion
RMGI
-Self etching primer with no extra Dentin Bonding
Agent
Self-Etch
-No etch, no primer, no Dentin Bonding Agent
Self- Adhesive
