Removable Partial Dentures Flashcards
How is acrylic used in RPDs
Acrylic resin denture base that holds the replacement teeth
What acrylic resin is used in RPDs
Thermoplastic acrylic resin - polymethacrylate
Describe how cobalt chrome is used in RPDs
Cast framework that holds the replacement teeth
Metal alloy of cobalt and chromium
What are the different Craddock classifications
Class I - tooth borne
Class II - mucosa borne
Class III - tooth and mucosa borne
Describe tooth borne support
Everything rests on the teeth
Saddle supported in both sides by substantial abutment teeth
Describe mucosa borne support
Everything rests on the mucosa
Biting forces resisted entirely by soft tissue
Describe tooth and mucosa borne support
Mixture - some of the denture rests on teeth, some rests on mucosa
Tooth supported at only one end of the saddle
Describe Kennedy classification 1
Bilateral free end saddles with natural teeth anterior to the edentulous space
Describe Kennedy classification 2
Unilateral free end saddle
Describe Kennedy classification 3
A single bounded saddle
Describe Kennedy classification 4
An anterior bounded saddle crossing the midline
What is a shortened dental arch
A dentition where most posterior teeth are missing
Must have at least 20 teeth
Can provide a stale and acceptable dentition
What are the components of an RPD
Coast Rest Major connector Minor connector Saddle Abutment Pontic
What is the purpose of a clasp
Engages a tooth and enters an undercut for retention
What are the different types of clasp
Occlusally approaching - molars
Gingival approaching - anterior teeth and premolars
What is a rest and what are the different types
Part of the framework that contacts a prepared surface of the tooth Can be: Occlusal Cingulum Incisal
What is a major connector
The portion that connects the components
What is a minor connector
The component that serves as the connecting link between major connector and other components such as the clasp assembly and occlusal rests
Describe a free end saddle
An edentulous space with an abutment tooth anterior and adjacent to it
Describe a bounded saddle
An edentulous space with abutment teeth anterior and adjacent, and posterior and adjacent to the space
What is an abutment
A tooth that serves to support a prosthesis
What is a pontic
An artificial tooth that replaced a natural tooth
Restores its function and usually restores the space previously occupied by the clinical crown
When are pontics mostly used
Fixed partial dentures and bridgework
