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_Complete Removable Pros > 1/2 Overview of CD & The Edontulous Challenge > Flashcards

1/2 Overview of CD & The Edontulous Challenge Flashcards

1
Q

What is resistance to vertical movement of the denture base toward the ridge?

A

Support

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2
Q

What is resistance to horizontal or rotational movement?

A

Stability

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3
Q

What is resistance to displacement of the denture base away form the ridge?

A

Retention

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4
Q

What is attraction between unlike molecules?

A

Adhesion

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5
Q

What is force between molecules of same material?

A

Cohesion

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6
Q

What is a thin fluid film between 2 closely contacting objects?

A

Interfacial surface tension

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7
Q

What is impression technique affects?

A

Intimate tissue contact

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8
Q

What prevents ingress of air?

A

Border sesal

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9
Q

What is a learned phenomenon?

A

Neuromuscular control

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10
Q

What do external contour of denture bases promote?

A

Neuromuscular control

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11
Q

What is the size of natural dentition?

A

45 cm^2 in each arch

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12
Q

What is the maxillary and mandibular size of complete dentures?

A

Max: 23cm^2
Mand: 12cm^2

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13
Q

What are patient classifications?

A

Philosophical
Exacting/critical
Hysterical
Indifferent

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14
Q

What are things to take note of during an intraoral exam?

A

Mucosa - color, contours
Basal seat - height, contour, ridge parallelism, palatal vault shape
Arch form - square, tapening, ovoid
Interarch space

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15
Q

What does border molding allow for?

A

The intraoral soft tissues to form the length, width, and shape of custom tray borders prior to making the secondary impression

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16
Q

What do artificial teeth rest on?

A

Mucous membranes

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17
Q

What does pressure on mucosa cause?

A

Soreness and resorption

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18
Q

What do complete dentures move in relation to?

A

The underlying bone during function
More movement = more soreness and resorption

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19
Q

What are the causes of denture movement?

A
  • resiliency of tissue
  • instability of the dentures
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20
Q

Almost all the “principles” of complete denture fabrication have been formulated to _____________ or __________ transmitted to the supporting structures

A

decrease movement; minimize the forces

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21
Q

In the edentulous state, there are _____ natural adaptive mechanisms left

A

Few

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22
Q

What type of tissue do dentures rest on?

A

Tissue that changes progressively and irreversibly

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23
Q

What is resistance to vertical movement toward the underlying tissues?

A

Support

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24
Q

What provides support in natural dentition?

A

Dentin - cementum - PDL - alveolar bone

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25
Q

What is the size of PDL in each arch?

A

45cm^2

26
Q

What is the mean size of the denture bearing areas?

A

Max: 23cm^2
Mand: 12cm^2
*decreases as ridges resorb

27
Q

What is Wolff’s law?

A

Living bone responds to functional stress by depositing bone in areas of stress

28
Q

Edontulous patients have very little adaptation to?

A

Functional stress on alveolar bone

29
Q

Wearing of dentures is almost always accompanied by?

A

An undesirable loss of bone

30
Q

In complete denture wearers, the mean reduction in anterior mandibular ridge is _____ times that of the maxillary ridge

A

4

31
Q

How to reduce pressure on residual ridges?

A

Remove dentures at least 8hrs/day & proper impression techniques

32
Q

What are proper impression techniques?

A
  • record tissues at rest
  • extend denture base to use maximum support area
  • placement of pressure on those tissues best able to tolerate pressure
33
Q

There is no contact of anterior teeth in?

A

Centric relation closure

34
Q

What reduces occlusal discrepancies?

A

Clinical remount and equilibraiton at delivery

35
Q

What is not a static tissue and is constantly being remodeled/replaced?

A

Bone

36
Q

Describe the bone of the maxillary ridge?

A

Partly covered by a layer of cortical bone after teeth are extracted

37
Q

Describe the bone of the mandibular ridge?

A

Crest remains spongy, trabeculated and not very resistant to resorption

38
Q

What is the primary denture support area on the mandibular arch?

A

Buccal shelf (compact bone)

39
Q

What principle is regarding the decrease of pressure per unit area by extending the denture base to cover the maximum area within physiological tolerance (support)?

A

Snowshoe principle

40
Q

More saliva contact =

A

more contact adhesion (retention)

41
Q

Proper peripheral extension =

A

Good border seal (retention)

42
Q

What is resistance to dislodgement/resistance to movement away from the foundation?

A

Retention

43
Q

The quantity and quality of this affect denture retention

A

Saliva

44
Q

What is xerostomia?

A

Dryness presents much difficulty for denture wearers

45
Q

What does xerostomia lead to?

A

discomfort, ulcerations, retention loss, chewing problems

46
Q

What is the attraction of unlike molecules for each other?

A

Adhesion

47
Q

What is the amount of retention attributable to adhesion directly proportion to?

A

Wettability of the denture base material to the area covered by the denture base and to the viscosity of the saliva

48
Q

What is resistance to movement in the horizontal plane/resistance to rotation/resistance to lateral movement?

A

Stability

49
Q

What are factors that influence stability?

A
  • Shape of alveolar ridges
  • Size of alveolar ridges/vestibular depth
  • Flange length and shape
  • intimate fit of prosthesis
50
Q

What is the need for edentulous in at least one arch?

A

36 million

51
Q

How many complete dentures are done each year?

A

5.5 million

52
Q

If you smoke, you are ______ more likely to be edentulous

A

3x

53
Q

Average general practice in USA has ______% of gross $$ from partial and complete edentulism?

A

27%

54
Q

What is often regarded as substitute treatment for expensive restorative therapy, periodontal therapy, or for an unesthetic dentition?

A

Complete dentures

55
Q

What is known as the technicians feeling they should he allowed to bypass the dentist and deal directly with the public?

A

Denturism

56
Q

What is our goal as described by Dr. M.M. Devan?

A

Not the meticulous replacement of that which is missing, but the preservation of that which remains

57
Q

What did Dr. J. Brudvik state?

A

Only through the meticulous replacement of that which is missing can we hope to preserve that which remains

58
Q

What is the 3 step process of complete dentures?

A
  1. Diagnosis
  2. Treatment planning
  3. denture fabrication
59
Q

Dentures do not cure _______

A

Edentulism

60
Q

Dentures are not ________

A

substitutes for natural teeth

61
Q

Denture are substitutes for _______

A

No teeth

62
Q

What plays a substantial role in overall complete denture success?

A

Patients’ personality and relationship with the dentist

_Complete Removable Pros (18 decks)

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