DA Compendium page 13 (Occlusion) Flashcards
How does joint anatomy influence the eccentric movement as the tooth is nearer to the TMJ?
Nearer the tooth to the TMJ, the more the joint anatomy influences the eccentric movement
What two things are horizontal considerations of occlusal morphology?
Width of fossa and the direction of grooves
What two things are vertical considerations of occlusal morphology?
Depth of fossa and the height of cusps
Occlusal forces placed on posterior teeth are best distributed in what position?
Maximum intercuspation
As the plane of occlusion approaches parallelism with the articular eminence, what needs to happen to the cusps on posterior teeth to avoid collision?
They need to be shorter to avoid collision
A steep condylar guidance angle will allow for shorter or taller cusps?
Taller
The more acute the Curve of Spee, the (shorter or taller) the cusps will need to be to avoid collisions?
Shorter
What distance will allow for a greater amount of immediate side shift?
Greater the distance between the orbiting condyle and medial wall
The greater the amount of the immediate side shift, the (shorter or taller) the cusps need to be and the (Wider or Narrower) the grooves will need to be
Shorter cusps
Wider grooves
Location of Non-Working side interferences
Facial inclines of the maxillary posterior lingual cusps
Lingual inclines of the mandibular posterior facial cusps
Location of Working side interferences
Lingual inclines of maxillary posterior facial cusps
Lingual inclines of maxillary posterior lingual cusps
Facial inclines of mandibular posterior facial cusps
Facial inclines of mandibular posterior lingual cusps
Location of Protrusive interferences
Distal marginal ridges of mandibular posterior teeth
Mesial marginal ridges of maxillary posterior teeth
