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nature and usage of Interim Removable Partial Dentures
The document outlines the indications and fabrication processes for interim removable partial dentures, highlighting their use in various situations, such as awaiting a definitive denture or addressing temporary conditions. It details the design elements, including major connectors, clasps, and rests, while emphasizing the importance of proper prescription writing and adjustments during treatment. Additionally, it mentions transitional dentures and their applications in cases of teeth extraction or psychological preparedness.
nature and usage of Interim Removable Partial Dentures
- 1. Interim Removable Partial InterimRemovable Partial Dentures Dentures
- 2. Interim Removable Partial InterimRemovable Partial Dentures Dentures Short period of time Short period of time Prior to a definitive denture Prior to a definitive denture Acrylic major connector, wrought wire Acrylic major connector, wrought wire clasps clasps
- 3. Indications Indications Large pulps(can’t fabricate bridge) Large pulps (can’t fabricate bridge) Clinical crowns too short Clinical crowns too short No usable undercuts No usable undercuts
- 4. Indications Indications Children -permanent prosthesis would Children - permanent prosthesis would be quickly outgrown be quickly outgrown Temporary space maintenance (caries, Temporary space maintenance (caries, trauma, congenitally missing teeth) trauma, congenitally missing teeth)
- 7. Indications Indications Temporary timeor financial constraints Temporary time or financial constraints Sudden loss of teeth, before sufficient Sudden loss of teeth, before sufficient healing has occurred (accidents, after healing has occurred (accidents, after extractions) extractions)
- 11. Indications Indications Transitional Denture TransitionalDenture Transition to a complete denture Transition to a complete denture Teeth need to be extracted but not Teeth need to be extracted but not immediately (medically immediately (medically compromised) compromised) Patient is not psychologically Patient is not psychologically prepared prepared
- 15. Indications Indications Treatment Denture TreatmentDenture Improve a condition before a definitive Improve a condition before a definitive denture denture
- 16. Indications Indications Treatment Denture TreatmentDenture Tissue conditioning Tissue conditioning
- 17. Indications Indications Treatment Denture TreatmentDenture Implant healing Implant healing
- 18. Indications Indications Treatment Denture TreatmentDenture Alteration of vertical dimension / Alteration of vertical dimension / occlusion occlusion Determine how patient will respond Determine how patient will respond to changes (TMD) to changes (TMD) Surgical Splint Surgical Splint Removal of palatal tori Removal of palatal tori
- 21. Interim Prosthesis Fabrication InterimProsthesis Fabrication Preliminary impressions Preliminary impressions Design the definitive partial denture Design the definitive partial denture (interim denture will use similar design) (interim denture will use similar design)
- 22. Interim Prosthesis Fabrication InterimProsthesis Fabrication Optional Step (preferred) Optional Step (preferred) Tooth preparations for a definitive Tooth preparations for a definitive RPD RPD New alginate impression New alginate impression
- 23. Interim Prosthesis Fabrication InterimProsthesis Fabrication Maxillo-mandibular relations Maxillo-mandibular relations Articulate casts Articulate casts
- 24. Design Design Clasps (Wroughtwire 0.02”) Clasps (Wrought wire 0.02”) Circumferential Circumferential
- 25. Design Design Clasps (Wroughtwire 0.02”) Clasps (Wrought wire 0.02”) Ball clasps Ball clasps Rest and retentive elements Rest and retentive elements
- 26. Design Design Clasps (Wroughtwire 0.02”) Clasps (Wrought wire 0.02”) Adams clasps Adams clasps Rest and retentive elements Rest and retentive elements
- 27. Design Design Bracing Bracing Lingual/palatalmajor connector Lingual/palatal major connector provides bracing provides bracing Contacts teeth at the heights of contour Contacts teeth at the heights of contour
- 28. Design Design Rests Rests Usuallywrought wire Usually wrought wire Acrylic may be used over cingulum Acrylic may be used over cingulum rest seats rest seats Longer term use - cast retainers Longer term use - cast retainers
- 29. Design Design Major Connectors MajorConnectors Full palatal coverage increases Full palatal coverage increases strength & stability strength & stability Extend denture to first molar Extend denture to first molar Retentive clasps embedded into major Retentive clasps embedded into major connector connector
- 30. Prescription Writing Prescription Writing Mark teeth to be extracted on the cast & Mark teeth to be extracted on the cast & write the teeth number on the write the teeth number on the prescription prescription Draw a line around the teeth where the Draw a line around the teeth where the cast should be surgerized cast should be surgerized
- 31. Prescription Writing Prescription Writing Survey the cast & mark height of contour Survey the cast & mark height of contour & retention areas (0.02”) & retention areas (0.02”) Indicate type of retentive clasp, rest & Indicate type of retentive clasp, rest & bracing bracing
- 32. Prescription Writing Prescription Writing Indicate where rests, retention arms & Indicate where rests, retention arms & bracing are to be placed, state tooth # & bracing are to be placed, state tooth # & surface surface Draw the outline of the denture on the Draw the outline of the denture on the cast cast Identify shade & mould of teeth selected Identify shade & mould of teeth selected State the type of occlusion required State the type of occlusion required
- 33. Adjustment Adjustment Commonly adjust: • interproximalextensions (A) • where clasp exits from resin (B) • tissue undercuts (C) (McCracken's Removable Partial Prosthodontics, 11th Ediion. Elsevier, 2005)
- 34. ‘ ‘Flipper’ Flipper’ Slang -No Clasps Slang - No Clasps