Manuals_files/CD Manual 12.pdf - Removable Prosthodontics

Single Complete Dentures -74
3. Avoid a complete single denture against an opposing 6- 8 teeth in the anterior of an
arch - it can lead to resorption, or loosening or fracture of the denture
CONSIDER FABRICATING AN OPPOSING PARTIAL DENTURE IF THERE IS EXTENSIVE
LOSS OF POSTERIOR TEETH IN THE OPPOSING DENTITION
4. If a partial denture is to be fabricated opposing a complete denture, the dentures should
be made at the same time. RPD preparations are made, an impression taken, and the
framework fabricated. While the framework is being fabricated, the final complete
denture impression is made, and the record base constructed. The framework is
adjusted, denture base is added to the framework and jaw relations recorded between a
complete denture occlusion rim and an opposing occlusion rim on the framework.
Setting the complete denture and RPD denture teeth at the same time allows maximum
control of tooth positions to optimize the occlusion. Any crowns or bridges should be
waxed up against the CD tooth setup for the same reason.
5. Setting of the anterior teeth is more difficult. Setting them for esthetics may result in a
placement which produces excessive overbite in relation to the natural teeth. This will
compromise stability of the denture. Anterior teeth are often set in a compromised
position, taking esthetics and function into consideration. Maxillary teeth may have to
be set higher to avoid excess overbite, which compromises display of the incisal edges.
6. Posterior denture teeth require more grinding to obtain stable centric contacts. Tip:
After obtaining the proper vertical dimension, increase the incisal pin height 1mm on
articulator (i.e. increase OVD 1mm) set all posterior teeth, let wax harden, return pin to
original position and grind occlusion until pin touches table. Use a type IV stone (e.g.
Silky Rock) on the opposing dentate cast to minimize abrasion during setup.