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fixed 3 > Ant. Fixed Dental prosthesis and Delivery of fixed dental pros > Flashcards

Ant. Fixed Dental prosthesis and Delivery of fixed dental pros Flashcards

1
Q

what is a fixed dental Prosthesis

A

Any dental prosthesis that is luted, screwed or mechanically attached or otherwise securely retained to natural teeth, roots, or dental implant abutments that furnish the primary support for dental pros

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2
Q

how many teeth may be included in a fixed Dental Prosthesis

A

1-16 teeth in each art

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3
Q

what is framework

A

the metallic/ceramix component that is included within the fixed dental prosthesis

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4
Q

what is the “floating” tooth(s) found in a FPD

A

pontic

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5
Q

where is the Pontic resting in an FPD when placed in the MOuth

A

The edentulous Ridge

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6
Q

what is an abutment

A

The part of a structure that directly receives thrust/pressure

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7
Q

what does an abutment anchor to

A

tooth
portion of tooth
portion of dental implant that serves to support/retain a prosthesis

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8
Q

what is a retainer

A

Any type of device used for the stabilization or retnetion of a prosthesis

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9
Q

what is a pontic

A

An artifical tooth on a fixed dental prosthesis that replaces a missing natural tooth

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10
Q

what does a Pontic do ideally

A

Restors function

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11
Q

where does a pontic find itself

A

in the space previously occupied by the clinical crown

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12
Q

how do you prep a tooth for an FPD

A

same as single tooth preparation with a common path of withdraw

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13
Q

what are the bio considerations for an FPD preparation

A

Preventing damage
Conserve tooth structure
Considerations affecting future dental health

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14
Q

what should you avoid to damage when preparing a tooth

A

Adjacent teeth
Soft tissues
pulp: temp, chemical action, bacterial action

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15
Q

what should be the mechanical considerations for an FPD prep

A

PRoviding retention form
Providing resistance form
Preventing deformation of the restoration

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16
Q

does crown type choice mater for esthetics

A

yes, all ceramic and metal ceramic

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17
Q

how can you change a prep to conserve tooth structure

A

Partial coverage rather than complete coverage restorations

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18
Q

what normal practices are done to conserve tooth

A
  • Preparation of teeth with the minimum practical convergence angle between axial walls
  • prep occlusal surfaces to follow anatomic planes and get uniform thickness
  • prep axial surfaces so that a maximal thickness of residual tooth structure surrounding pulpal tissue is retained
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19
Q

how should you select margin geometry?

A

Conservative and compatible with the other principles of tooth preparation

20
Q

where should the margin be placed

A

Where ever to avoid unecessary apical extension of the prep

21
Q

how should the margin geometry be designed to increase ease

A
  • ease of prep w/o over-extension or unsupported enamel
  • ease of identification in the impression and on the die
  • distinct boundary to which the wax pattern can be finished
22
Q

what is the casting and porcelain margin adaptation

A

Casting: 10 micrometers
Porcelain: 50 micrometers

23
Q

what is the problem with rough, irregular, or stepped junction

A

Greatly increase overall margin length and reduce the adaptation accuracy of the restoration

24
Q

benefit of Supragingival margin

A

Easy to finish without soft tissue trauma
More easy to keep plaque free
Easier impression
easier evaluation of restorations

25
Q

what the problem with subgingival margins

A

Dental caries
Cervical erostion
root sensitivity

26
Q

where do proximal contact areas extend in subgingival margin

A

Extend to the gingival crest

27
Q

what extra does a subginval margin need to support restoration

A

Additional retention and resistance needed

28
Q

what type of margin is usually done for an FPD

A

subginvial

29
Q

what is the major benifit of Subgingival margin

A

Esthetic as fuck

30
Q

how large is biologic width

A

2mm

31
Q

what is the biolotic width mdae of

A

Junction epithelium

Connective tissue attachment

32
Q

where should retraction cord be placed

A

below the margin without destroying the attached gingiva connection

33
Q

what can you do to see the biologic width

A

use retraction cord within the sulcus

34
Q

what is the workflow of a FPD

A 
Diagnosis
treatment planning and patient approval
Tooth prep based on plan
Provisional and patient aproval
Definitive restoration try in and patient approval
Delivery and patient signature
35
Q

why do we do diagnostic casts

A

use opposing casts for fixed restorations
Fabrication of provisions
Fab of custom trays

36
Q

why do we mount our diagnostic casts

A 
Learn occlusal plane
Learn interarch clearance
Treatment position (CR or MIP)
Change in VDO
Occlusal analysis
 - AP slide
 - Anterior guidance
Esthetic analysis
37
Q

how should the condylar inclination be set up

A

Protrusive record of patient
Loosen condylar component
Place the protrusive record between casts
set condylar guidance

38
Q

what is the correct condylar inclination

A

30 degrees

39
Q

what is the correct incisal pin

A

0 degrees

40
Q

why would diagnositc tooth preparations be indicated

A

Rotated
tipped
extruded teeth

41
Q

what must be done before crown lengthening

A

Gingival finish line

42
Q

why do a diagnostic waxup

A
  • establish more physiologic, esthetic morpholy
  • organize and blueprint and occlusal scheme
  • make ESF for provisional restoration construction and tooth preparation
43
Q

what does luted mean

A

Cemented

44
Q

do we do partial preps or full preps now a days

A

we do full preps(partial is the old school way of doing it)

45
Q

what does connector thickness depend on

A

Depends on material

space between teeth

46
Q

what happens if you violate biologic width

A

Will be inflammed for ever

47
Q

what do we use for ESF in lab

A

Polypropylene (more cloudy than polyethylene)

fixed 3 (4 decks)

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