Occlusal examination

Question 1

What are functional cusps?

Answer 1

Cusps that occlude with opposing teeth in centric occlusion

Question 2

What are guiding cusps?

Answer 2

Cusps that don’t occlude with opposing teeth in centric occlusion

Question 3

How should the fossa pattern be determined with direct restorations?

Answer 3

As a result of you choosing cusp and ridge position

Question 4

List 7 signs of occlusal instability?

Answer 4

Fremitus
Drifting, rotation, over-eruption
Localised faceting or fractures
Abfraction
Loss/failure of restorations
Vertical bony defects
Pain in tooth or TMD

Question 5

What is fremitus?

Answer 5

Palpable vibration or displacement when teeth come into contact

Question 6

Problem with simple hinge articulator?

Answer 6

Will not reflect movement of the jaw

Question 7

What does ARCON stand for?

Answer 7

Articulating condyle

Question 8

Function of ARCON?

Answer 8

Replicates the condyle, mimics natural TMJ

Question 9

Describe the movement of the condyle on the non-working side

Answer 9

Moves forward, downwards and medially.
Bennet angle = sideways
Condylar angle = vertical movement

Question 10

Describe the movement of the condyle on the working side

Answer 10

Immediate side shift or Bennet movement