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Introduction & Terminology (RPD) - Coggle Diagram
Introduction & Terminology (RPD)
Prosthodontics
Restoration or replacement of missing teeth & related tissues.
Includes:
Complete dentures
Removable partial dentures (RPD)
Fixed prostheses (crowns, bridges)
Maxillofacial prostheses (cleft palate, cancer, injuries)
Dental implants
Removable Prosthodontics
Branch concerned with replacement of teeth & neighboring structures.
Applies to completely or partially edentulous cases.
Uses artificial substitutes removable by the patient.
Partial Denture (PD)
Prosthesis restoring
one or more but not all
natural teeth and/or tissues.
Support may come from:
Natural teeth
Dental implants
Supported crowns / abutments
Fixed partial dentures
Mucosa
Abutment
Tooth, part of tooth, or implant portion supporting and/or retaining a prosthesis.
Removable Partial Denture (RPD)
Removable appliance replacing some teeth in a partially dentate arch.
Can be inserted and removed at will.
Objectives of RPD
Improve mastication
Improve esthetics
Enhance psychological comfort
Improve speech
Restore continuity of dental arch
Preserve teeth and tissues (for RPD design + oral health)
Indications for RPD
After recent extraction
Long edentulous span (>4 units)
No posterior abutment
Excessive alveolar bone loss (esthetic problem)
Young age (<17 years)
Bilateral stabilization needed
Esthetics (especially anterior region)
Reduced periodontal support of remaining teeth
Immediate replacement needed
Economic considerations
Preferred in cases of:
2 missing posterior teeth or >4 anterior teeth
Canine + 2 adjacent teeth missing
No distal abutment tooth
Severe tissue loss
Periodontally weakened teeth
Multiple edentulous spaces
Elderly patients
Tipped/short abutment teeth
Classifications of RPD
By support:
:Tooth–tissue support
Tissue support
Tooth-tooth support
By retention:
Extra-coronal
Intra-coronal
By extent of denture base:
Extension base RPD
By extent of prosthesis:
Unilateral
Bilateral
By location of edentulous area:
Kennedy Classification
Contraindications for RPD
Poor oral hygiene / high caries risk
Lack of patient cooperation
When fixed restorations are possible
Poor prognosis for remaining teeth