Occlusion L1 - Occlusion static module 2 review Flashcards
If there is stagnation between the contact points what can that lead to?
Caries risk
It is important to restore contact points when restoring teeth, how do contact points support the teeth?
They offer arch alignment/stability
Which dental arch is slightly longer than the other dental arch?
Upper dental arch is slightly longer
Describe the contact relationship of the teeth on the upper dental arch with the lower dental arch?
Each upper tooth contacts with its lower antagonist and its distal neighbour
What determines tooth alignment?
Path of eruption
Forces exerted on the teeth by, teeth, soft tissues, other factors such as thumb
What is the neutral zone in reference to tooth alignment?
Zone of equilibrium between forces exerted on a tooth.
The neutral zone is clinically important when constructing a what?
Denture
Upper molar occlusal surfaces face in which direction and at which angle?
Upper molar occlusal surfaces face buccally at a 20-degree angle.
Lower molar occlusal surfaces face in which direction?
Lingually
Are the lower buccal cusp more lingual than the upper buccal cusp?
Yes
How would you describe the position of the upper buccal cusp in relation to the lower buccal cusp in a bilateral cross bite?
The upper buccal cusp is more lingual than the lower buccal cusp
Name this bite?
Bilateral cross bite
Name this bite?
Unilateral crossbite
How would you describe the position of the upper buccal cusp in relation to the lower buccal cusp in a unilateral cross bite?
The left/right upper buccal cusp is more buccal than the lower buccal cusp and other cusp is opposite.
Which teeth determines the angle classification?
Angle classification is determined by 6’s relationship between MB cusp of upper 6 and the MB groove of lower 6.
What are the names of each class?
class 1
What are the names of each class?
class 2
What are the names of each class?
class 3
which class?
Class 1 – the MB cusp of the upper 6 sits in the MB groove of the lower 6
which class 2
Class 2 – the MB cusp of the upper 6 sits on the DB cusp of the lower 5, whilst the MB cusp of the lower 6 sits in the MB groove of the upper 6
which class 3
Class 3 – the MB cusp of the upper 6 sits on the DB of the lower 6.
Incisor relationship – what is the name given when tooth overlap in the vertical plane
Overbite
Incisor relation – tooth overlap in the horizontal pane
Overjet
What locations on incisors determine the incisor classification?
Relationship between lower incisor tip to cingulum plateau of the upper incisor.
