Manuals_files/CD Manual 12.pdf - Removable Prosthodontics

Selecting & Setting Teeth - 52
f) Disadvantages: Poorer appearance (non-anatomic teeth); can be unstable if the
condylar guidance is steep (posterior teeth separate, leaving only the anteriors in
contact)
g) Contraindications: The patient has high expectations for improved appearance,
very steep condylar guidance may make a monoplane scheme less stable, unless
modifying ramps or compensating curves are used.
Setting Posterior Teeth:
- Posterior teeth are set for function, while the anterior teeth are set mainly for esthetics
and phonetics (although placement can affect incising ability and fulcruming potential
of the denture)
- Stability is increased when centric contacts are on flat surfaces, rather than on inclines
- The most important cusp in the posterior setup is the maxillary lingual cusp which is set
over the middle of the mandibular ridge (mandibular central fossae will be placed
here)
- Ensure 1-2 mm of overjet in order to prevent cheek or lip biting
- Mandibular buccal cusps are lateral to the residual ridge and have more tipping potential
for the lower denture
- For a lingualized setup, there should be 1mm separation of the maxillary and
mandibular BUCCAL cusps