Intro to occlusion Flashcards

1
Q

what is occlusion

A

how the teeth come together and function

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

if the patients bite does not feel comfortable what can this lead to

A

pain
fracture of restorations
loosening of teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what can go wrong with occlusion

A

overloading of force on the teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are the causes of overloading on teeth

A

can be due to a premature contact( interference) “feels high”
lateral excursions on post teeth
excessive forces due to parafunction(bruxism)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is fremitus

A

the feeling of the tooth vibrating when you touch it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what does a lot of fremitus lead to

A

inflammation and bruising of the PDL which can lead to bleeding
widening of the PDL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what can we see on a amalgam filling if the restoration is a bit high

A

the restoration will become slightly shiny

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

how do we avoid occlusal problems with restorations

A

by having the restorations conform to the patients existing occlusion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what should we do before even starting a filling

A

use articulating paper to see where the load lies and get the patient to tap tap tap and move side to side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what are posterior teeth designed for

A

vertical forces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what issues can occur with bruxism

A

increased wear
fracture of restorations
muscle pain
microcracks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is free way space

A

space between the teeth at rest usually 2mm-4mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is the freeway space usually

A

2mm-4mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what do we call the occlusion when we bite together

A

the ICP- inter cusp position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is the ICP

A

INTER CUSPAL POSITION- the maximal digitation of the teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is the ICP driven by

A

not by bones driven by the position of the teeth

17
Q

what is closing in retruded driven by

A

the position of the bones- to get the condyle fully seeded in the glenoid fossa

18
Q

what is the RCP

A

retruded contact point- the first tooth that touches if we were in a skeletal position

19
Q

what is the distance of opening on rotation

20
Q

what axis do we rotate around when opening the jaw

A

the terminal hinge axis

21
Q

what is translation of the jaw hinge

A

the jaw slides forward as it continues to open

allows us to eat nuts etc

22
Q

what muscle is used in translation

A

lateral pterygoid muscle- pulls the condylar process forwards

23
Q

what key muscles are used when closing the jaw

A

temporalis
masseter
medial pytergoid

24
Q

what is protrusion

A

from the ICP TO sliding the jaw forward

25
what helps protect the posterior teeth
condylar guidance-
26
what is condylar guidance
as we protrude the jaw drops down and the lower teeth gets pushed away from the upper teeth
27
what happens if we have a shallow condylar guidance
causes more damage to the posterior teeth as they juddering against each other
28
what are lateral movements
forward backward movement
29
what is the definition of occlusal scheme
either in canine guidance or group function
30
canine guidance
The canines on the working side are the only teeth to remain in contact when moving to that side
31
what is group function
On lateral movements 2 or more teeth remain in contact on the working side
32
what is an articulator
Mechanical device that recreates the patients jaws upon which study models can be positioned and the relationship between upper and lower teeth studied