Occlusal Relationships

Question 1

What are the types of deviations seen from the line of occlusion?

Answer 1

Buccoversion deviation to the buccal side

Linguoversion deviation to the lingual side

Torsiversion torsion

Labioversion deviation is specific to anterior teeth and refers to deviation towards the lip

Question 2

What are the types of occlusal relationships of the teeth?

Answer 2

Normal occlusion

Class 1 malocclusion

Class 2 malocclusion

Class 3 malocclusion

Question 3

What are the classes of occlusion based on?

Answer 3

Relationship of the mesiobuccal cusp of the maxillary first molar and the buccal groove of the mandibular first molar.

Question 4

What are the static characteristics of the ideal occlusion?

Answer 4

Molars demonstrate a class 1 relationship

Dentition follow the line of occlusion in their respective arches

Teeth demonstrate an absence of rotation

Tight occlusal contracts exist between the teeth

Maxillary incisors demonstrate 20 - 30% overlap of mandibular incisors

Ideal curve of spee

Ideal curve of Wilson

Question 5

What are the ideal occlusion functional characteristics?

Answer 5

Bilateral occlusal contacts exist when the mandible is in the retruded contact position

The difference between the intercuspal position and
the retruded contact position is less than or equal to 1mm

During lateral movements of the mandible – contacts
should only exist on the working side and be absent on the non working side.

Question 6

What is the curve of spee?

Answer 6

Defined as the curvature of the mandibular occlusal plane beginning at the premolar and following the buccal cusps of the posterior teeth, continuing to the terminal molar.