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5th yr- Finals- complete dentures > occlusion theory for complete denture > Flashcards

occlusion theory for complete denture Flashcards

1
Q

Define ideal denture occlusion

A

The teeth meeting all at the same time at the correct OVD in the retruded position

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2
Q

What do we need to know to create the ideal denture occlusion

A
  1. How the jaws move
  2. How the teeth meet
  3. OVD
  4. RVD
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3
Q

What do we mean by occlusion

A

How the teeth relate to each other in terms of:
1. How they come together when patent closes
2. How they contact each other when protruding, moving side to side

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4
Q

What holds a complete denture in the mouth

A
  1. Border seal
  2. Weak muscular forces
  3. Weak intermolecular forces between denture and saliva
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5
Q

What type of occlusal relationship do we need to have in a complete denture

A

Group function

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6
Q

Why do we not aim to recreate canine guidance in complete denture patients

A

Canine guidance can cause disclusion in a way that prevents contact between the teeth

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7
Q

How does the jaw open normally

A

Lateral pterygoid pulls the condyle forward and backwards (translation and rotation)

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8
Q

How does the jaw close normally

A

Temporalis pulls jaw up
masstter provided power to chew

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9
Q

What is ICP

A

Intercuspal position (when mouth is closed naturally)

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10
Q

Where is the condyle in ICP

A

Condyle in the glenoid fossa is slightly foreword and slightly down

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11
Q

What is RCP

A

Retruded contact position
When the teeth are slightly apart when the jaw is closed

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12
Q

State the ideal dentate occlusion

A

Ideal occlusion for the dentate patient is concerned with reducing interferences and lateral forces on posterior teeth

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13
Q

Describe the ideal dentate occlusion

A
  1. Immediate discussion of posterior teeth on lateral or protrusive movement
  2. Canine guidance
  3. No premature contacts or interferences
  4. No pain due to overloading of periodontal ligament
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14
Q

State the ideal edentate occlusion

A

Ideal occlusion for the edentate patient is concerned with denture stability, reducing excessive forces on the denture bearing tissues with minimal strain on the muscles of mastication

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15
Q

Describe the ideal edentate occlusion

A

Tooth contacts should be coincident across as many teeth as possible whether in iCP or lateral movements

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16
Q

What does denture stability rely on

A
  1. Balanced occlusion
  2. Balanced articulation
17
Q

What is balanced occlusion

A

The ideal interdigiation of the teeth in which there is no cuspal interference in any position of jaw closure

18
Q

Is balanced occlusion a static or dynamic situation

A

Static

19
Q

What is balanced articulation

A

The ideal interdigiation of the teeth in which there are no cuspal interferences when the jaw is moved from side to side

20
Q

Is balanced articulation a static or dynamic situation

A

Dynamic

21
Q

What do we use to ensure the teeth are in balanced articulation

A

Curve of monson

22
Q

What does the curve of monson ensure

A

That the teeth on the non working side are lower than the teeth on the working side when the jaw is moving

23
Q

How do we ensure teeth are in balanced occlusion

A

By following curve of Spi

24
Q

What does the curve of spee ensure

A

That when are teeth are meeting in a protruded way the back teeth stay in contact ensure all the pressure isn’t on the front teeth which would result in the denture falling down

25
Q

What are the curve of spee and monson known as

A

Compensating curve

26
Q

What is the free away space

A

A gap that naturally occurs between the upper and lower teeth when at rest

27
Q

What is the average of the free way space

A

2-4mm

28
Q

What does OVD stand for

A

Occlusso vertical dimension
Teeth together in ICP

29
Q

What does the RVD stand for

A

Resting vertical dimension
Distance when teeth are apart while the jaw is at rest with lips together and breathing through nose

30
Q

How do we measure a patient FWS

A

RVD - OVD

31
Q

How do we measure OVD

A

Distance between nose and chin when patient is biting down

32
Q

How do we measure RVD

A

Distance between nose and chin when patient is at rest (pretending like they are watching tv)

33
Q

Why is the free way space important

A
  1. Reduces stain on the muscles of mastication
  2. Reduces load on the denture supporting tissues
34
Q

What can happen if we have a lack of free way space

A
  1. Teeth will constantly be in contact leading to increased load on denture bearing tissues
  2. Increased load
  3. Teeth click together when speaking
35
Q

What can happen if you have too much free way space

A
  1. Over close and protrusion to get teeth to meet
  2. Difficulty eating
  3. Teeth do not show
36
Q

In order to get the correct OVD what two positions must we be aware of

A
  1. Retuned position
  2. Resting vertical dimension
37
Q

What is the retruded position

A

Where the condyle is the most poster superior area within the glenoid fossa

38
Q

How can we encore the patent to get into the retruded position

A

Ask the pt to curl their tongue to the back of their mouth

5th yr- Finals- complete dentures (3 decks)

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