Arrangement Of Teeth Flashcards
Curve of spee
Curve of Wilson
Christinines phenomenon
Opening of the posterior dental arches when mandible moves forward
Compensating curve
1st maxillary premolar arrangement
Buccal surface must harmonise with mx canine.
Buccal cusp is on the occlusal plane but lingual cusp is 0.5 off the
Lingual cusp on the line that represents mnd ridged
2nd premolar
Long axis of the 2nd premolar is perpendicular to occlusal rim
Buccal cusp of the max 2nd premolar is on the crest of the ridge
1st maxillary molar
Mesiolingula cusp only touches the occlusal plane . Distilling 0.5
2nd maxillary molar
No molar touches the occlusal plane buccal cusps of post maxillary for, a gentle curve :
Lingual cusps form a curve 0.5 below the buccal cusps0.5
All lingual cusps are over the crest of Mandibular ridge
Post teeth Should be harmonising with ant
1st. Mandibular molar
Buccal cusps of mnd molar must fit into cusps of the max fossae
Mesioling cusp of mx fits into central fossa of Mandibular fossa .
2nd mnd premolar
Opposes the marginal ridge of opposing teeth in the mx teeth the same way as the 1st
1st premolar
Buccal cusps should engage the mesial marginal ridge of the opposing 1st premolar and the distal marginal ridge of the canine
Mnd 2 molar
Lingual cusp of mx 2 should fit into centric fossa of 2nd maxillary
Buccal overlap prevents over biting
Centric occlusion
Buccal cusps of posterior Mandibular teeth contact central fossa of maxillary teeth and lingual cusps of mx fits into the central fossa of Mandibular teeth
Central incisors
Should be placed 8-10 m of the incisive papilla.
Both should touch the midline but thand the incisal edge should touch the occlusal plane it have a slight distal inclination .
