Occlusion Flashcards
What are some things to be taken into consideration when thinking about occlusion
Contact points Tooth alignment Incisal relationships Cross bites Intercusual position Molar relationships
At the contact point of teeth what is to be cautious of
The stagnation which may occur leading to caries
What is the contact point critical for
Mastication
Arch alignment and stability
What are the arch relationships
Upper arch overlaps lower
Upper buccal cusps are buccal to lower buccal cusps
What does each tooth contact with
It’s distal neighbour and lower antagonist
What is the tooth alignment determined by
Path of eruption
Forces exerted on the teeth by- teeth, soft tissues, foreign objects
What is the zone of equilibrium between forces exerted on the tooth called
Neutral zone
What is the neutral zone clinically important for
Dentures
What is the Curve of Wilson
laterally across mouth form ear to ear
What is a cross bite
When lower buccal cusps are buccal to upper buccal a cusps
What are the two types of cross bite and which is easier to rectify
Bilateral or unilaterl
Bilateral easier to rectify
What is the curve of spee
From front of mouth the back
What is Angels classification
Relationships between upper and lower 6’s
Particularly the MB cusp and MB groove
What is class 1 of angles classifications
The MB cusp occluded in MB groove
What is class 2
The MB cusp occluded anterior to MB groove
What is class 3
The MB cusp occluded posterior to MB groove
What is an overbite
When a tooth overlaps on the vertical plane
What is an open bite
When the teeth have no contact
What is an over jet
When the teeth overlap in a horizontal plane - protrudes Anteriorly
What is a reverse overjey
When the upper incisors are behind the lower incisors
What are the incisor relationships
Relates lower incisor tip to the Cingular plateau of the upper incisor
What are the incisor classifications
Class 1 - normal
Class 2 - overjet
Class 3 - overbite
Class 4 - reverse overjet
What is occlusion
Contact relationships between teeth within and between arches
