Quiz 2 Course Supplies/ Diagnostic Wax Up Flashcards
True or False? The high speed should always be used for tooth preparation.
T
What bur should be used to break inter proximal contact?
850 (pointed diamond)
What are depth cutting burs used for?
creating depth groove; WDL1.0, WDL1.5, WDL2.0
What is the Chamfer bur used for?
axial wall reduction complete metal ceramic or complete cast crown; 6878K-016/6879K-018 (greed), 8878K-016/8879K-018 (red) (rounded tip diamond burs) (red is finer)016 = 1.6mm diameter at shank, not tip
What is a shoulder bur used for?
occlusal reduction, axial wall reduction for metal ceramic crown when ceramic margin is designed for the restoration (chamfer with round tip cut off, flat tip); 6847-016 (green) , 8847-016 (red)
How to clean burs:
Bur cleaning stone, material clogs bur
Burs to be used with straight low speed hand piece:
metal finishing kit bur block, fixed/removable trimming and polishing bur block, e-cutters (3 sizes)
The new typodont is series:
200; remove all screws, hold arches together firmly, alternately tighten all screws in order to achieve even pressure on all sides
What should be engraved on each tooth?
Typodont #, Project #, mark CEJ, 1mm above CEJ (different colors)
2 types of gauges:
Boley and Gold
When is the total occlusal convergence guide used?
tooth prep
Total Occlusal Convergence is aka:
Angle of Convergence
Define Total Occlusal COnvergence:
angle between opposing axial wall when a tooth is prepared for single crowns or fixed dental prostheses, can be mesio-distal or bucco-lingual walls
In which directions should TOC be evaluated?
mesio-distally and buck-lingually
Instruments that can be used for measuring:
perio probe, ball burnisher, chisel, hand mirror, air/water syringe tip, cotton players, etc.
Is the condylar housing on the upper or lower member or Arcon Articulator?
upper
Are the condyles attached to the upper or lower member of the articulator in a Non-Arcon articulator?
upper (opposite human anatomy)
Learn how to take articulator apart and do lateral and protrusive movements.
ok
5 options to restore a single tooth:
full coverage restorations, direct, inlay, onlay, core build up
Factors to consider when choosing method of restoration for tooth:
plaque control, loss of tooth structure, esthetics, function retention, finances/cost
Removal forces for the different restoration types:
MOD onlay: 36KgF, 3/4 crown: 48KgF, 7/8 crown: 52KgF, Full Metal Crown: 110KgF
Top 6 restorations with the longest longevity:
metal ceramic, metal inlay, pvc, simple amalgam, metal onlay, full metal crown (lower to higher longevity)
Full coverage options for single tooth:
Complete Cast crown, metal craic crown, all ceramic crown
What is required for to start treatment if the treatment plan included a complete cast crown?
diagnostic wax up and external surface form
What is today’s project?
Diagnostic Wax-Up of tooth #30
Will wax stick to the cast if it is not fully dried?
No
Do this before adding wax to the cast:
create a retention hole
Check this after finishing wax-up of #30:
excursive and protrusive movements
What is the fabrication guide made from?
diagnostic wax up
Why do we fabricate the reduction guide directly on the typodont?
standardize amount of tooth reduction
What do we use for fabrication of external surface form?
silicon putty
At what 3 points should the reduction guide by sectioned vertically?
mesial cusps, lingual groove, disto-lingual cusp
What need to be locked when rebuilding the articulatory?
centric latches
True or False? Loosen the L centric latch to get L lateral excursion.
F. R
Which latch(es) need to be released for protrusive movement?
both
True or False? Some restorations use a dentinal pin.
T
What type of restoration is an inlay?
intracoronal
What type of restoration is an onlay?
extracoronal
3 general types or restorations:
intracoronal, extracoronal, full crown
When should a full cast crown be used?
Severe occlusal stress, odonticallly treated tooth, significant loss of coronal dentin
Is the treatment plan or diagnostic workup done first with fixed, complete-case prosthodontics?
diagnostic work up
For complex cases:
Wax Up first
Step in cutting tooth #30
identify crest of buccal cusp, pencil line vertically to buccal from the cusp tip to the gingiva, cut about 3mm of occlusal with e-cutter or arbor band retrace buccal cusp with pencil, cut retention notch with round bur, then wax up
Mesial buccal cusp tip of Max1M occludes with:
occlusal embrasure of opposite pair of maxillary teeth
Centric contact area:
distal inner slope of triangular ridge of DB cusp
DB cusp of Man1M
central fossa of opposite maxillary molar
What determines the maximum height of the ridges of #30?
the contour of the maxillary teeth
Which cusps should we build up first?
M and D buccal cusps
What type of bur is used to break inter proximal contacts?
conical bur
Red and green indicate differences in:
grit
What is used to clean e-cutters?
bur brush
Where do you start your preparation/
1mm above the CEJ
Gold Gauge:
thickness of crown and many hard materials
Range of degree of angulation:
5-25
Why are the 2 sizes for 5 and 10?
small and larger tooth
Range of angles for the 10 slot on the TOC gauge:
6-10 degrees
True or False? There is one TOC angle per tooth for a full crown restoration.
F. 2 MD and DB
When wouldn’t you be able to use a reduction guide in the the clinic?
tilted restoration, fix tilt during diagnostic wax up
