The more/less directions or places in which the prosthesis can move, the less stress if placed on the implant, in turn transferring more forces to the residual ridge. This makes the attachment more resilient.
more
_ movement: prosthesis si allwoed to move bodily towards the tissues. Stop as soon as it gets hard
Vertical
_ movement: prosthesis revolves around an axis that has bene formed by the most posterior attachments on each side of the arch
hinge
_ and _ or _: prosthesis moves in an anterior posterior movement or bucco lingual direction without rotation. Vertical axis
Translation, spinning, fishtailing
_ is the most common tx option for overdenture
studs
_ copings fatigue the implant
telescopic
Patients with advanced resorption of ride are good for _ design
bar
Patients with minimum alveolar ridge resportion are good for _ design
stud
Contraindication for stud:
1. Combined _-implant borne prosthesis
2. _ or more implants per mandibular jaw
3. Using 1 or multiple attachment systems
4. Implant positioning not ideal: divergent/convergent from each other
5. Excessive _
1. Tooth
2. 2
3. Multiple
4. Divergent
5. resorption
For surveyed crowns: Guiding planes and rest seats are prepared on all abutment teeth before or after any of the teeth are prepared for crowns
before
Path of insertion is always incorporated in the _ pattern of the abutment crown
wax
During clinic impression you need a half or full arch
full
The _ must be included in the distal extension situations (class 1 and 2) to identify the occlusal plane
Retromolar pad
Add more cingulum to man or max canines
man
Max or man first premolars need to be adjusted to 2nd premolars
man
Design sequence for surveyed crowns:
1. Select _ more/less is better
2. _ connectors
3. _ connectors
4. _ retention
5. _ retention
1. Abutment, more
2. Major
4. Minor
5. Resin
6. direct
PFM restorations the _ and _ guiding planes in metal
Proximal, lingual
Survey the diagnostic cast:
1. POI always perpendicular to _ plane
2. Mark all _ both on _ and _ tissue
3. Check the _ planes
4. At least _ retentive areas on both sides of arch
1. Occlusal
2. HOC, hard, soft
3. Guide
4. 1
For clasps:
1. Only the terminal _ of the clasp in the undercut _"
2. _ is at or slightly above HOC
3. Try to make them as long or short as possible
4. Remember minimum _ mm distance from gingiva
1. 1/3 0.01
2. 2/3
3. Long
4. 1
Survey crowns:
1. Diagnostic casts
2. Survey the casts
3. Identify the abutment teeth
4. Decide if a survey teeth need a crown
5. Diagnostic wax up
6. Duplicate the diagnostic wax up
7. Prepare prep guide
8. Cinch before you prep
9. Prep tooth
10. Remembe
...
Surveyed crown Rest prep in crowns _ of the occlusal table
1/3
Keep clasps occlusogingivally _ mm
1.5
You need _ minimum distance from gingiva to HOC line for circumferential clasp. More distance is better
2.5mm
Final cementation food for single or multiple crowns
single
Active clasp length and gauge for .010 undercut:
1. <7mm _g
2. 7-10mm _g
3. >10mm _g
20,19,18
Crown a molar with 1 missing cusp?
no
Crown MOD defect 30% of the buccolingual width?
No 50%
Ideal crown/root ratio
2:3
Minimum accepted crown/root
1/1
Dislodging forces on a fixed partial denture retainer tend to act in a _ direction
Mesio distal
Dislodging forces on a single restoration tend to act in a _ direction
Facio lingual
For pier abutments _ fit is key
passive
_ are used as stress breakers
Non rigid connectors
A cantilever can be used for replacing maxillary _ with no occlusal contact in either MIP or lateral
Lateral
A cantilever can be used for replacing first premolars and _ are required on both second premolar and first molar
Full coverage retainers
Remaining wall thickness for ferrule is _mm
1
Preparation height for premolars and anteriors crown is _mm and for molars _ mm
3,4
Zirconia or lithium disilicate more reflective
zirconia
Zirconia or lithium disilicate more translucent
Lithium disilicate
What is the correct order of compressive strength of ZPC,RRGI,PCC,Resin
Resin>RRGI>ZPC>PCC
Zinc phosphate cement:
Advantages
1. _ of use
2. High medium low strength
3. High medium low thickness
4. High medium low working time
5. Easily _
Disadvantages
1. High medium low translucency
2. High low solubility
3. _ sensitivity
Indications
_ _
1. History
2. Medium
3. Low
4. Low
5. Removed
1. Low/none
2. Low
3. Mixing technique
Full coverage cast restorations, partial coverage cast restorations
Polycarboxylate cement
Advantages
1. Relative _
2. Adhesion to _
Dis
1. High medium low translucency
2. High low solubility
3. High medium low strength
4. High medium low viscosity
Indications
_
Biocompatible
dentin
low trans
low sol
low strength
high viscosity
long term provisionals
Resin reinforced glass ionomer
Advantages
1. High medium low strength
2. _ easily
3. Less early _ susceptible
4. High low translucency
5. Expand or contract during setting
Indications
_ and all _ crowns with proper retention resistance form
contraindicati
1. Higher
2. Removes
3. Moisture
4. High trans
5. Expand during set
Full coverage cast restorations, all ceramic crowns zirconia based
Contra
glass all ceramic
post and core
Resin
Advantages
1. High medium low str
2. _ property
3. High low solubility
4. High low trans
Dis
1. _
Highest
adhesive
low
high
too thick
Use _ cement for posts
Self adhesive resin (rely x)
Take radiographs to confirm seating for _ copings
impression
Only _ and _ outrank lack of retention as a cause of failure of crowns and FPDs
Caries, porcelain fracture
Post indications are _ and _
Remaining coronal tooth structure is inadequate, sufficient root length
What is the best build up material
composite
RPD sequence
1. Treatment plan
a. Determine cc
b. Evaluate pocket depths and restorations and prognosis of abutments
c. Up to date x rays
d. Alginate impression for diagnostic casts: survery, tripod, design, make path of insertion guide
e. Present tx plan
Know it
Post design parallel or tapered better? Post length? Post diameter?
Parallel. 3/4 root, equal to crown length, 1/2 root in bone. 1/3 size of root at apical third
1. _ and evalualte overall health of possible abutments. Types and placements of _ and _
2. Type of _ connector
3. Type of _ connector
4. The choice of _ retention
5. Selection of type and placement of _
Select
rests and guide planes
major
minor
retentive clasps
_ for metal _ for wire
Red, blue
In general, use more/less abutments and more/less coverage of the soft tissue whenever possible for our standard design
More, less
For undercut you want _
0.010
As a general rule the short/tall guide plane is indicated only in the Class _ mandibular. All other use long guide planes
Short, 1
For feldspathic porcelain etch with _ for _ seconds
HF, 60
Zinc phosphate cement advantages:
1. _ of use
2. High, medium, or low strength
3. High, medium, low thickness
4. High medium, low working time
5. Easily _
History, medium, low, medium, removable
Zinc phosphate cement disadvantages:
1. High or low translucency
2. High or low solubility
3. _ sensitivity
Low to none, low, mixing
Paralleling guide is formed on _ cast by placing wire into resin using dental surveor
diagnostic
Subtractive or additive first
subtractive
Minimum thickness of alginate is _" all way around
1/4 inch
Stop needed for thickness in _ support alginate
palate
Alginate syringe useful in _ space and _ in maxilla
Retromolar, buccal to tuberosities
For resin RPD _ first and then pour
draw
D451 Steps in making a TRPD
1. _ model and place scratched in _ marks
2. _ models with advisor
3. Keep model wet or dry for block out process
4. Soak model using the _ principle for _ minutes, soap the model to prevent _, then _
5. _ opposing and new work
1. Survey, tripod
2. Tx plan
3. Dry
4. Wick, 20, impression material from sticking to porous surface, duplicate blocked out master with alginate
5. Mount
6. Bend wires
7. Wires, buccal, intaglio surface with acrylic resin
8. Setup teeth
9. Complete wax
10
For mandibular overdenture. Attachment resiliency is associated with the movement between the _ and the _ in a predetermined direction or directions
Abutment, prosthesis