1. Interim Removable Partial Dentures

2. Interim Removable Partial Dentures
Short period of time
Prior to a definitive denture
Acrylic major connector, wrought wire clasps

3. Indications Large pulps (can’t fabricate bridge)
Clinical crowns too short
No usable undercuts

4. Indications Children - permanent prosthesis would be quickly outgrown
Temporary space maintenance (caries, trauma, congenitally missing teeth)

7. Indications Temporary time or financial constraints
Sudden loss of teeth, before sufficient healing has occurred (accidents, after extractions)

11. Indications Transitional Denture Transition to a complete denture
Teeth need to be extracted but not immediately (medically compromised)
Patient is not psychologically prepared

15. Indications Treatment Denture
Improve a condition before a definitive denture

16. Indications
Treatment Denture
Tissue conditioning

17. Indications
Treatment Denture
Implant healing

18. Indications Treatment Denture
Alteration of vertical dimension / occlusion
Determine how patient will respond to changes (TMD)
Surgical Splint
Removal of palatal tori

21. Interim Prosthesis Fabrication
Preliminary impressions
Design the definitive partial denture (interim denture will use similar design)

22. Interim Prosthesis Fabrication
Optional Step
Tooth preparations for definitive RPD
New alginate impression

23. Interim Prosthesis Fabrication
Maxillo-mandibular relations
Articulate casts

24. Design
Clasps (Wrought wire 0.02”)
Circumferential

25. Design Clasps (Wrought wire 0.02”) Ball clasps
Rest and retentive elements

26. Design Clasps (Wrought wire 0.02”) Adams clasps
Rest and retentive elements

27. Design Bracing Lingual/palatal major connector provides bracing
Contacts teeth at the heights of contour

28. Design Rests Usually wrought wire
Acrylic may be used over cingulum rest seats
Longer term use - cast retainers

29. Design Major Connector
Full palatal coverage increases strength & stability
Extend denture to first molar
Retentive clasps embedded into major connector

30. Prescription Writing
Mark teeth to be extracted on cast & write teeth #’s on prescription
Draw a line around teeth where cast should be surgerized

31. Prescription Writing
Survey the cast & mark height of contour & retention areas (0.02”)
Indicate type of retentive clasp, rest & bracing

32. Prescription Writing
Indicate location of rests, retentive & bracing arms
Draw outline of denture base on cast
Identify shade & mould of teeth
State type of occlusion required

33. Adjustment Commonly adjust: interproximal extensions (A)
where clasp exits from resin (B)
tissue undercuts (C)
(McCracken's Removable Partial Prosthodontics, 11th Edition. Elsevier, 2005)

34. ‘Flipper’
Slang - No Clasps