C/C Cram Flashcards
Relief areas of maxillary arch
Incisive papilla (exit point nasopalatine - necrosis/paraesthesia)
Palatine raphia
Limiting structures of maxillary arch
Labial frenum
Buccal frenum
Labial sulcus
Buccal sulcus
Hamular notch
Vibrating line
Support areas of maxillary arch
Max tuberosity
Rugae
Hard palate
Relief areas of mandibular arch
Genial tubercle
Mandibular tori
Mylohyoid ridge
Limiting structures of mandibular arch
Labial frenum
Buccal frenum
Labial sulcus
Buccal sulcus
Support areas of mandibular arch
Buccal shelf
Retromolar pad
Why is the hamular notch an important site for complete dentures
Site for distal border
Helps with posterior seal
Overextension = pain
Underextension = falls out
Ridge classification (6)
I - Dentate
II - Post XLa
III - Broad alveolar process
IV - Knife edge
V - Flat
VI - Submerged
Impression checks
Adequate surface detail
Good peripheral seal
Covered the denture bearing area
How long in PERFORM
10m
What is the function of a jaw reg
Determine occlusal plane
Jaw relationship
What is RCP
Most reproducible maxillomandibular relationship
Retruded position of the condyles
FWS calculation
RVD-OVD
Ideally 2-4mm
Lab stages for Replica denture
Primary
Imp taken with stock tray + lab putty
Ask for record block on shellac base
Masters +jaw reg
Of the replica using light bodied PVS
Ask to pour up imps and mount articulator
Trial
Delivery
imp options for C/C
Alginate
Imp compound
Silicone PVS (EXTRUDE)
Polyether (IMPREGUM)
Alginate advantages + disadvantages
Cheap
Easy to use
Elastic
Poor dimensional stability
Not accurate
What kind of material is imp compound vs alginate
Imp non elastic
Alginate elastic
Compare silicone + polyether
SILICONE
Dimensionally stable
Hydrophobic
Variety of consistencies
Messy
V accurate
POLYETHER
Dimensionally stable
Hydrophilic
No variety of consistencies
Messy
V accurate
Compare edentulous vs dentate tray
EDENTULOUS = SHALLOW + NON PERFORATED
What to mark on denture after primary imp
Post dam
Lab card for primary imps
Please pour up U+L primary imps in 50:50 plaster: stone and construct a light cured acrylic special tray (3mm spacing for alginate)
If silicone/polyether 2mm upper spacing 1mm lower
Master imp checks
Full coverage of denture bearing area
Full functional depth + width of sulcus
No encroachment on tongue space
Rolled borders
Absence of tears/shine through
Lab card for master imps
Please pour up U+L master imps in 100% dental stone and provide record blocks on light cured bases for jaw registration
What are the record block adjustments to do before LIMBO
Stability - rock
Retention - under/OE - frenum, post dam
Support - good mucosal coverage
Adjust anything with wax knife
Steps of upper block jaw reg
LIIMBO
Lip support
- Nasolabial angle 90-100
- Judge aesthetics + function
Incisal level
- Fricative
- Count from 40-50
- Lick lips + relax
- Ask about show of teeth ideally
Incisal plane
- Foxes bite plane parallel w inter pupillary line
- Mark lipline +high smile line
Midline
- Mark with wax knife
Buccal corridor
- Floss from eye to nose mark that line
Occlusal plane
- Foxes bite plane parallel to alatragal line
Mark post dam say aaaa and located vibrating line
Steps of lower block jaw reg
Check extensions
Lift tongue/displace
Adjust height to lip level
Midline
Work out FWS
How to work out FWS clinically
Use willis bite gauge/callipers
RVD - at rest,, say mmmm then relax
OVD - ask pt to bite together
Substrate the RESTING from the OCCLUSAL
How do we record occlusion n
2 v shaped notches into blocks
Patient in RCP
Adhesive
Bite regi paste
Pick shade + mould
Lab card for jaw reg
Please mount casts to regi provided on average value articulator and provide a try in
Tooth shade + mould
Tooth trial checks
OUT OF MOUTH
Trial bases stable on cast
No sharp edges
Extension
Occlusion
AOB/OJ/OB
IN MOUTH
Extension
Retention - pull centrals
Stability - rock
Occlusion
Speech
Aesthetics
What is the desired occlusion for a complete denture?
Contact on both sides when slide side to side
What is the desired occlusion for an RPD
Contact on working side
Lab card for tooth trial
Please prep post dam on casts
Please process in heated cured pMMA
How to adjust occlusion at denture delivery stage
Selective grinding
BULL RULE
Buccal upper
Lingual lower
