2; Try In Flashcards
What are the starting measurements of the maxillary and mandibular occlusal wax rims
22mm maxillary
18mm mandibular
What are three purposes of space between the edentulous ridges
room to swallow, chew, and enunciate words
room for maxillary and mandibular baseplates
room to look and feel comfortable
What is the chance that the baseplates with wax wins will fit the patients with out any alterations
slim
This records all anatomic landmarks that should be covered by a denture and permits fabrication of properly extended custom trays that will expedite border molding and facilitate a quality impression.
an accurate preliminary cast
This part of the pre-maxilla area must be visible
frenum notch
These areas should not be cut short
retromolar pad areas and hamular notch areas
These two areas should be flat and 13mm thick
maxillary palate and lingual tongue area
All land areas of the cast should be how wide
3-4mm
The cast in the tongue space should be reduced flat to access what
lingual undercuts
this is added to the making of a custom tray to allow for a space that will accommodate at least a minimum 1mm thickness of supported impression material.
wax spacer
The wax spacer stops the tray from doing what
over-seating into the soft tissues
This is shaping of an impression material by the manipulation or action of tissues adjacent to the borders of an impression tray.
border molding
What is the objective of border molding
to determine the contours, height, and width of the borders of the complete denture.
Classical border molding of the peripheral borders of the custom tray is with this material
“green stick compound”
We use this technique to make an impression of the vestibule during function; to manipulate the tissues to get them extended to allow maximum movement before engaging the denture and moving it.
selective pressure
Always remember to do this to the green stick compound before placing it in the mouth
temper the compound to 140° water bath for 3-5 seconds
The tray is completely immersed/tempered then immediately placed in the mouth so what
so it does not harden until after its in the mouth
Which type of PVS can be used in place of the green stick compound
heavy body
What should you take the final impression with
light body
This will enclose the edentulous impression and preserve the vestibular contours of the final impression
a base
What is the mixture for fabricating a base
1:1 plaster/pumice
How much excess “racetrack” land area should there be around the base
4mm
This is a substance, such as dried clay or cement, used to pack and seal pipe joints, and other connections or coat a porous surface in order to make it tight; can be used to seal boxing wax around the base while boxing it
lute (heal seal)
Over-vibrating when pouring will cause what to happen
separation of wax
You should not attempt this method to separate the final impression from the cast
the crow bar method; submerge in hot water for 15 minutes to aide in separation
This an accurate replica of the residual ridge areas, and other parts of the dental arch upon which a complete denture prostehsis can be fabricated.
master cast
The master cast must be protected by doing what before making the base plate
blocking out all undercuts
What are two common problems of temporary base plates
not sufficiently blocking out all undercuts
not sufficiently lubricating casts prior to making base plates
can lead to a broken or marred surface of the cast
What is the downfall of blocking out undercuts
lack of retention of the temporary base plate during patient treatment
The occlusal rims are what
“wax pillars placed on baseplates”
The occlusion rims are adjusted to record what
the patients interocclusal jaw relationship
The occlusal rims serve as guides for what
setting the teeth in proper position and establishing the proper contours of the denture base
These create temporary intermediate structural base-plates representative of contours of the final denture
templates/base plates
