L26. Toothwear and Occlusion Flashcards
What is occlusion the study of?
Upper and lower teeth when they are closed together
Where are the teeth in the “rest position”? What is this determined by?
Slightly apart
Determined by neuro-muscular memory
What does ICP stand for and what does it mean?
Inter-cuspal position - when the teeth are fully occluded
In anterior ICP, where do the lower teeth’s incisal edge/canine tip rest?
Against the cingulum of upper teeth
Name 2 materials which can be placed between the teeth to check occlusion.
Shimstock
Dental tinfoil
Should the shimstock be removable when the teeth are fully occluded?
No
Name the material which marks teeth to check occlusion
Articulating paper
Give the 2 patterns of direction our jaw moves in when we eat.
Down, right diagonally down, up
Down, left diagonally down, up
Give 3 ways to check for a balanced occlusion
- Even and bilateral ICP
- Anterior teeth contact evenly when the mandible protrudes
- There is contact between teeth in the same arch and opposing arches
What is it called when the teeth don’t meet like in ICP?
RCP (retracted cuspal position)
What is frictional keratosis? Give an example of this
A type of white patch in the mouth. eg. white line from teeth grinding on cheek - linea abla
What is translation?
The movement of the jaw downwards and forwards.
What is canine guidance?
When the mandible is moved from side to side, the canines stop any lateral movement.
What is the other guidance type to canine guidance?
Group function - when the mandible swings laterally, if a few teeth tough, it is group function.
Name the apparatus dental casts can be placed in to represent mandibular movement.
Articulator
