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Intro to Fixed Prosthodontics > Week 11 > Flashcards

Week 11 Flashcards

1
Q

what is a cemented or permanently affixed extra coronal restoration that covers, or veneers, the outer surface of the clinical crown

A

crown

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2
Q

what is a full coverage or a complete crown that covers the entire clinical crown of a tooth?

A

full veneer

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3
Q

what can a crown be also referred to as (4)?

A

full veneer, full coverage, complete crown, or full crown

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4
Q

what can a crown be fabricated of?

A
  1. metal (FCC)
  2. ceramic veneer fuse to metal (PFM or MCC)
  3. all ceramic material (ACC)
  4. resin and metal
  5. resin
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5
Q

what is FCC

A

full cast crown

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6
Q

what is MCC

A

metal-ceramic crown

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7
Q

what is ACC

A

all-ceramic crown

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8
Q

what is a partial coverage crown

A

3/4, mesial 1/2 and 7/8

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9
Q

what is an all-ceramic thin layer of dental porcelain or cast ceramic that is bonded to one surface of the tooth with an appropriate resin

A

laminate veneer

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10
Q

what is a prosthetic appliance that is permanently attached to remaining teeth or implants and replaces one or more missing teeth?

A

fixed partial denture (bridge)

then becomes a FDP (fixed dental prosthesis)

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11
Q

what is FDP

A

fixed dental prosthesis

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12
Q

what are the 5 components of diagnosis

A
  1. health history
  2. TMJ and occclusal evaluation
  3. intraoral examination
  4. diagnostic casts
  5. full-mouth radiographs
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13
Q

what to look for when examining health history

A
  1. medications
  2. allergies
  3. cardiovascular disorders
  4. epilepsy
  5. diabetes
  6. xerostomia
  7. osteonerosis
  8. current complaint and patient expectations
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14
Q

do we include herbal products when looking at patient meds?

A

yes

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15
Q

what type of allergies should we show concern for

A

impression materials, latex and nickel-containing alloys

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16
Q

what are important CVD what we look for?

A
  1. BP < 140/90 Hg
  2. anticoagulants such as coumadin - INR (international normalized ratio)
  3. IE = infective endocarditis
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17
Q

will we work with patients that have a diastolic reading of greater than 90?

A

NO

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18
Q

what should we ask for regarding pt diabetes

A
  1. HbA1c (how much glucose is tied to RBC)
  2. hyperglycemia/hypoglycemic episodes
19
Q

why should we ask pt about diabetes

A
  1. healing is generally impaired (circulation issues)
  2. periodontal breakdown
20
Q

what can cause xerostomia

A
  1. large doses of radiation in oral region
  2. Lupus erythematosus
  3. Sjogren’s syndrome
  4. side effect of numerous drugs
21
Q

tmj and occlusal evaluation

A
  1. joints palpated as pt opens and closes to detect signs of dysfunction
  2. masseter muscles palpated extraorally by placing the fingers over the lateral surface of rami of mandible
  3. fingers are placed over patient’s temple to feel temporalis muscles
  4. index finger used to touch medial pterygoid on inner surface of ramus
  5. trapezius muscle is felt at base of skull
  6. SCM grasped between thumb and forefingers
  7. distance between max and mandibular incisors is measured when patient is open all the way (most people should open at least 1 inch)
  8. if opening is limited or painful, pt should be instructed to use a finger to indicate the area that hurts
22
Q

what can we use to protect ourselves from infectious diseases

A
  1. rubber gloves
  2. surgical mask
  3. eye protection
23
Q

principles of crown preparation

A
  1. preservation of tooth structure
  2. retention and resistance
  3. structural durability
  4. marginal integrity
  5. preservation of the periodontium
24
Q

what does it mean to preserve tooth structure

A
  1. conserve as much tooth as possible
  2. must balance with structural durability
25
Q

what is TOC

A

total occlusal convergence (term for taper)

26
Q

what degree TOC should we shoot for

A

10-15 degrees

27
Q

what does retention and resistance include

A
  1. taper/TOC
  2. freedom of displacement
  3. length (>3 mm preparation wall height)
  4. internal features
  5. path of insertion
28
Q

what are the 2 most important factors for crown retention

A

TOC and length

29
Q

what is freedom of displacement

A

ways a crown can come off tooth

30
Q

preps are nearly always aligned with ___ axis of the tooth

A

long axis

31
Q

are anterior 3/4 crowns usually aligned with long axis?

A

NO

32
Q

are there any sharp angles in crown preps?

A

NO. Corners will be rounded!

33
Q

what does structural durability involve?

A
  1. functional cusp bevel
  2. axial reduction
34
Q

what is marginal integrity?

A

want NO or microscopic space

35
Q

advantages of Chamfer finishing line

A

minimal tooth destruction and minimal stress

36
Q

disadvantages of Chamfer finishing line

A

reduces crown strength (ceramic) and poor esthetics (ceramic)

37
Q

how to preserve periodontium

A
  1. margins are to be as smooth as possible and fully exposed
  2. supragingival if at all possible
  3. subgingival margins difficult to make, evaluate and keep clean
38
Q

what margins are difficult to make, evaluate and keep clean?

A

subgingival margins

39
Q

why would you need to place subgingival margins?

A

caries, previous restorations, trauma, or esthetics

40
Q

what bur to use for facial and lingual axial reduction

A

coarse-grit tapered torpedo diamond 856

41
Q

what bur for proximal axial reduction

A

medium-grit short needle and coarse-grit tapered torpedo diamonds 876 856

42
Q

what bur for occlusal reductiion

A

coarse-grit round-end tapered diamond 856 and no. 171L bur (book)

43
Q

what bur for Chamfer and axial finishing

A

fine-grit tapered torpedo diamond

44
Q

what bur to use for functional cusp bevel

A

coarse-grit round-end tapered diamond 856 and no. 171L bur (book)

Intro to Fixed Prosthodontics (11 decks)

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