Principles of a removable partial denture
Rpd design generator
Slide 8: When an occlusal load is applied in a tooth-tissue supported RPD, the denture tends to rock due to difference in the compressibility of the abutment teeth and the soft tissues. The functions of minor connectors are to provide unification and rigidity to the denture. Slide Thus the combined resiliency of the periodontal ligament and the stress director is equal to the resiliency of the oral mucosa overlying the ridge. Slide Infrabuge clasp must exit the denture base travel parallel to and 3 mm away from gingiva margin and turn occlusally to cross the margin at right angle. Slide Denture Bases Use broad tissue base support. The most common types are I,T and Y. Increased amount of tooth coverage can lead to dental caries Components of RPD: Components of RPD Saddles Occlusal rests Retainers Clasps Indirect retainers Stress breaker Connectors major, minor Slide Major Connector: The unit of a removable partial denture that connects the parts of one side of the dental arch to those of the other side. Slide Clasp design. Slide Disadvantages Greater bulk may cause prosthesis to be less comfortable.
The looseness of the clasp on the abutment tooth reduces the functional forces transmitted to the tooth. Slide c.
Slide Should be compatible with existing tooth and tissue contour. Slide Broad stress distribution Advocates of this school of thought believe that excessive trauma to the remaining teeth and residual ridge can be prevented by distributing the forces of occlusion over as many teeth and as much of the available soft tissue area as possible.
As the tissues are more compressible, the amount of stress acting on the abutment is increased. Slide Types. Slide b. Direct retainer, indirect retainer, denture base, etc.
based on 51 review