Dynamic occlusion

Question 1

describe occlusion

Answer 1

the contact relationships of teeth or equivalent

Question 2

describe articulation

Answer 2

the dynamic relationships of the teeth when in sliding contact

Question 3

describe Jaw relationship

Answer 3

Positional relationship which the mandible bears to the maxilla

Question 4

What are the vertical jaw relationships and dimensions?

Answer 4

• Rest/Postural Position
• Intercuspal position (ICP)
• Retruded Contact Position (RCP)
• Occlusal vertical dimension (OVD)
• Rest vertical dimension (RVD)
• Freeway space (FWS)

Question 5

Describe rest/postural position

Answer 5

• At rest - teeth apart
• How maintained?
  minimal muscle activity or…
  Is it governed by muscle elasticity
• It remains reproducible throughout life in both dentate and edentulous subjects
• Important with full dentures

Question 6

describe occlusal vertical dimension (OVD)

Answer 6

• the face height with the teeth in ICP
• measured between two arbitrary points
• governed by the height of the teeth
• important to get OVD correct

Question 7

describe rest/postural vertical dimension (RVD)

Answer 7

• face height with mandible in rest/postural position
• measured between two arbitrary points
• this should not alter significantly throughout life

Question 8

describe freeway space (FWS)

Answer 8

• the space between teeth in rest position
• difference between RVD and OVD
• 2-5mm

Question 9

describe balanced occlusion concept

Answer 9

• Tooth contact during excursions at both working and non-working sides
• Ideal for F/F dentures:
  Maintains stability
  control cusp shape / tooth position and orientation
• Difficult to achieve because teeth rarely in contact
• cannot exist in a normal dentate occlusion

Question 10

Answer 10

Question 11

Answer 11

Question 12

Question 13