Manuals_files/CD Manual 12.pdf - Removable Prosthodontics

Selecting & Setting Teeth - 54
- Set the maxillary teeth, then the mandibular antagonist
- The posterior teeth should be set to follow the occlusal plane of the record base - the
teeth should not be set on a plane higher than that intersecting a point 1/2-2/3 up the
retromolar pads
! In some cases where there is a ridge size discrepancy or skeletal malocclusion, the tooth
positions may have to be modified into cross bite positions. Often it is easier to set
cuspless teeth in a monoplane scheme, because it is not necessary for cusps and fossae to
interdigitate
! Don’t let the record base dictate the buccolingual inclination of teeth:
Achieving a Balanced Lingualized Occlusion
- Normally, when the mandible moves in
lateral or protrusive directions, the condyles
move down the slope of the glenoid fossae,
causing the whole mandible to move
downwards and the posterior teeth to
separate. This is separation, called
Christensen’s phenomenon, makes any balanced occlusion (such as lingualized
occlusion) more difficult. When condylar inclination is steep, using a shallow
cusped tooth (e.g. Anatoline), rather than a non-cusped mandibular tooth for
will make balancing easier to achieve.