Symposium

Question 1

What do we need to assess in regards to occlusion for a new patient (extra orally)

Answer 1

1. Palpate TMJ

2. Check for deviations in opening and closing

Question 2

What do we need to assess in regards to occlusion for a new patient (intra orally)

Answer 2

1. ICP

Question 3

List the functions of articulators

Answer 3

1. To replicate haw arrangements and movements
2. To allow examination of the occlusion
3. To allow fabrication of restorations
4. To investigate proposed changes to the occlusion

Question 4

Name the different types of articulators

Answer 4

1. Hinge
2. Average value
3. Semi adjustable
4. Full adjustable

Question 5

What can a simple hinge articulator recreate

Answer 5

1. ICP

2. Opening and closing by rotation

Question 6

What can an average value articulator recreate

Answer 6

1. ICP
2. Opening and closing by rotation and translation
3. Basic lateral movements

Question 7

What can we us to get a more accurate value for the arc of rotation

Answer 7

Face bows

Question 8

What do face bows do

Answer 8

attempts to get the arc of rotation correct

Question 9

What can a semi adjustable articulator re create

Answer 9

1. Position of hinge axis
2. ICP
3. RCP
4. Lateral movements

Question 10

Give examples of lateral movements

Answer 10

Immediate side shift

Progressive side shift

Question 11

Why is recording occlusion so important

Answer 11

As we need th technician to be able to put the upper and lower models of the patient together in just the same way as the teeth meet naturally in the mouth

Question 12

Give examples of some bite registration materials

Answer 12

1. Pastes (Silicones/ Polyethers) BLUE MOOSE

2. Waxes / Compound

Question 13

What are some problems associated with blue moose in dentate patients

Answer 13

It is too accurate so when we try and put the blue moose into the models the models will bounce back and not sit correctly

Question 14

How should we use blue moose

Answer 14

Only use in the area of the prep NOT WHOLE ARCH

Question 15

If the models fit together in one way that matches the patient which inter occlusal record should we take

Answer 15

none

Question 16

If the models would have fitted together but you have prepped a tooth making it now unclear how they fit which inter occlusal record should you take?

Answer 16

Blue mousse over top of prep and get patient to close together in ICP

Question 17

If there is significant wear and no position for the models to sit which inter occlusal record should you take

Answer 17

Full arch wax

Question 18

If there are too many missing teeth and there is no stable occlusal position fo the models which inter occlusal record should you take

Answer 18

Wax rims in edentulous spaces and blu moose

Question 19

What can the fully adjustable articulator replicate?

Answer 19

1. Position of hinge axis
2. ICP
3. RCP
4. Lateral movements

Question 20

What can be adjusted in a fully adjustable articulator

Answer 20

1. All surfaces of the glenoid fossa
   2.Intercondylar width
   ISS
   Progressive side shift
   Condylar angle

Question 21

What is occlusion

Answer 21

The way teeth meet

Question 22

How should teeth meet?

Answer 22

Should meet in such a way that does no over load a weekend cusp or overload the periodontal ligament more than it cn endure

Question 23

How can overloading happen?

Answer 23

Excessive force due to parafunciton or interference

Question 24

How can we change occlusion

Answer 24

1. Increase OVD
2. Creation of different ICP
3. Alter lateral guidance scheme