Fixed partial dentures-elements. Bridge classification. Preparation guidelines. Classification of abutments. Intra and extracoronal retainer Flashcards
Parts of fixed partial denture
Retainer
Pontic
Connector
Abutment
Replaces missing tooth
Pontic
Connection between retainer and pontic
Connector
Supports the retainer
Abutment
Types of connectors
Rigid Non rigid Loop Split Cross pin and wing connector
Rigid connector use
When entire load on pontic transferred to abutment
Non rigid connector use
Where single path of insertion impossible
Split pontic connector use
For pier abutments
Cross pin and wing connector
For tilted abutments
Bridge classification
Fixed fixed Fixed supported Fixed free(cantilever) Spring cantilever compound
Fixed fixed connection
Rigid connectors at both ends of pontic
Fixed supported connection
Rigid connector at distal end of pontic and non rigid at mesial
Fixed free (cantilever) support
Posterior abutment supports single anterior
Classification of FPD edentulous space
class I- Posterior edentulous space
Class II- Anterior edentulous space
Class III Antero-posterior edentulous space