Occlusion Flashcards
This tooth (indicated by the arrow) is:
16
27
36
47
36
This tooth (restored by amalgam) is:
15
27
14
16
16
The fractured restoration is on:
13
24
16
34
24
Why is occlusion important?
Reduced risk of fracture, wear and tooth/restoration failure
What are the two types of occlusion to consider?
Static occlusion
Dynamic occlusion - side movement
How do we mark occlusal contacts?
Using articulating paper
What can be used to test the occlusal contact and clearance (metallic material)
Shimstock foil
How thick is shimstock?
8 microns thick
How should articulating paper placed in a patients mouth?
Placed simultaneously on two sides to prevent displacement of mandible
What is the name of equipment that holds articulating paper?
Miller’s forceps
Y-type articulating paper holder
How should the tooth be prepared prior to using articulating paper?
Tooth should be dry
Comment on the mark left by articulation paper upon heavy occlusal contact?
More colour squeezed out - greater more prominent mark left
Cusp tips form the opposing tooth should fit into what part of the opposing cusp upon occlusion?
Cusp tips → Marginal ridges
Cusp tips → Fossa
What is tripodization?
An occlusal scheme characterized by each centric cusp contacting an opposing fossa has three reciprocating contact areas.
Grants Occlusal stability
What is the function of the miller forceps?
They securely grip the entire length of the articulating paper
What is wear facets?
A type of non-carious lesion that occurs when teeth rub against each other too much
