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2 - Prosthodontics (Removable) > Intro To Partial Dentures > Flashcards

Intro To Partial Dentures Flashcards

1
Q

What is a prosthesis?

A

An artificial body part that replaces a missing part

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2
Q

What are dentures?

A

Set of replacement teeth usually made from cobalt chrome or acrylic

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3
Q

What are some reasons patients have missing teeth?

A

Caries
Cancer
Periodontitis
Trauma
Hypodontia
Endodontic disease

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4
Q

What teeth are most commonly hypodontic?

A

Wisdom teeth 3rd molar

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5
Q

What are the anatomical changes missing teeth can cause?

A

Extral-oral
- changes in facial appearance
- tmj problems (possibly)

Intra-oral
- alveolar resorption
- tooth movement
- tooth wear

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6
Q

Why do the changes in facial appearance occur?

A

Due to loss of hard and soft tissues which support the face

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7
Q

What are the general consequences of missing teeth?

A

Anatomical
Unwanted tooth movements
Appearance
Functional
Speech
Mastication
Emotional/psychological

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8
Q

How can we replace missing teeth?

A

No treatment (leave space)
Resin bonded bridgework
Conventional bridgework
Implant crowns/bridgework
Removable partial dentures
Complete dentures
Implant retained dentures

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9
Q

What is a shortened dental arch?

A

A dentition where most posterior teeth are missing

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10
Q

How is the conventional bridgework carried out?

A

Abutment teeth either side of the space prepared for crowns (retainers)
The replacement tooth (Pontic) is held in place by the retainers

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11
Q

What is a saddle?

A

A saddle area is the area of the missing teeth to be restored with a partial denture

A saddle is the part of the denture that carries the replacement artificial teeth to fill the space

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12
Q

What are the types of saddle areas?

A

Bounded saddle (abutment teeth on either die of the space)
Free-end saddle (one abutment tooth anterior to the space)

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13
Q

What are the three important concepts in denture making?

A

Support - the resistance to vertical movement of the denture towards the tissue
Retention - the resistance to displacement of the denture away from the tissue
Stability - the resistance to horizontal (lateral) movement of the denture

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14
Q

What are the types of rest and what important components do they provide?

A

Occlusal
Cingular
Incisal

Support and stability

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15
Q

What important component do clasps give?

A

Retention

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16
Q

What are the types of connectors?

A

Minor
Major

17
Q

What are the materials used for partial dentures and how do they work?

A

Acrylic Resin
-base that holds replacement teeth, thermoplastic resin is used (polymethylmethaacrylate), has a clasp to help with retention

Cobalt Chrome
-cast framework that hold the replacement teeth, metal alloy of cobalt and chromium

Nylon Resin
-thin and flexible valplast (not used)

18
Q

What is the class of a bi-lateral free-end saddle classification?

A

Kennedy class 1

19
Q

What is the class of a uni-lateral free-end saddle classification?

A

Kennedy class 2

20
Q

What is the class of a unilateral bounded saddle classification?

A

Kennedy class 3

21
Q

What is the class of a midline saddle classification?

A

Kennedy class 4

22
Q

For the method of support, what is craddock class 1?

A

Saddles supported on both sides by abutment teeth

23
Q

For the method of support, what is craddock class 2?

A

Vertical biting forces resisted entirely by soft tissues

24
Q

For the method of support, what is craddock class 3?

A

Tooth supported at only one end of the saddle

25
Q

What does ‘tooth borne’ mean and what are examples of support classes associated with it?

A

Everything rests on the teeth

Replacement teeth supported on both sides by substantial abutment teeth

Craddock class 1

26
Q

What does ‘mucosa borne’ mean and what are examples of support classes associated with it?

A

Everything rests on the mucosa

Biting forces resisted entirely by soft tissue

Craddock class 2

27
Q

What does ‘tooth and mucosa borne’ mean and what are examples of support classes associated with it?

A

Mixture- some of the denture rests on the teeth, some rests on the mucosa

Tooth supported at only one end of the saddle

Craddock class 3

28
Q

What is a denture abutment?

A

A tooth that serves to support a prosthesis

29
Q

What is a free end saddle?

A

An edentulous (empty) area with a tooth at one end only

30
Q

What is a major connector?

A

The portion of a removable partial denture that connects it’s components

31
Q

What is a minor connector?

A

Components that serve as the connecting link between the major connector and other links

32
Q

What is a Pontic?

A

An artificial tooth that replaces a missing tooth

2 - Prosthodontics (Removable) (16 decks)

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