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  1. 1. Interim Removable PartialInterim Removable Partial DenturesDentures
  2. 2. Interim Removable PartialInterim Removable Partial DenturesDentures • Short period of timeShort period of time • Prior to a definitive denturePrior to a definitive denture • Acrylic major connector, wrought wireAcrylic major connector, wrought wire claspsclasps
  3. 3. IndicationsIndications • Large pulps (can’t fabricate bridge)Large pulps (can’t fabricate bridge) • Clinical crowns too shortClinical crowns too short − No usable undercutsNo usable undercuts
  4. 4. IndicationsIndications • Children - permanent prosthesis wouldChildren - permanent prosthesis would be quickly outgrownbe quickly outgrown • Temporary space maintenance (caries,Temporary space maintenance (caries, trauma, congenitally missing teeth)trauma, congenitally missing teeth)
  5. 5. IndicationsIndications • Temporary time or financial constraintsTemporary time or financial constraints • Sudden loss of teeth, before sufficientSudden loss of teeth, before sufficient healing has occurred (accidents, afterhealing has occurred (accidents, after extractions)extractions)
  6. 6. IndicationsIndications • Transitional DentureTransitional Denture − Transition to a complete dentureTransition to a complete denture •Teeth need to be extracted but notTeeth need to be extracted but not immediately (medicallyimmediately (medically compromised)compromised) •Patient is not psychologicallyPatient is not psychologically preparedprepared
  7. 7. IndicationsIndications • Treatment DentureTreatment Denture − Improve a condition before a definitiveImprove a condition before a definitive denturedenture
  8. 8. IndicationsIndications • Treatment DentureTreatment Denture − Tissue conditioningTissue conditioning
  9. 9. IndicationsIndications • Treatment DentureTreatment Denture − Implant healingImplant healing
  10. 10. IndicationsIndications • Treatment DentureTreatment Denture − Alteration of vertical dimension /Alteration of vertical dimension / occlusionocclusion •Determine how patient will respondDetermine how patient will respond to changes (TMD)to changes (TMD) − Surgical SplintSurgical Splint • Removal of palatal toriRemoval of palatal tori
  11. 11. Interim Prosthesis FabricationInterim Prosthesis Fabrication • Preliminary impressionsPreliminary impressions • Design the definitive partial dentureDesign the definitive partial denture (interim denture will use similar design)(interim denture will use similar design)
  12. 12. Interim Prosthesis FabricationInterim Prosthesis Fabrication • Optional Step (preferred)Optional Step (preferred) − Tooth preparations for a definitiveTooth preparations for a definitive RPDRPD − New alginate impressionNew alginate impression
  13. 13. Interim Prosthesis FabricationInterim Prosthesis Fabrication • Maxillo-mandibular relationsMaxillo-mandibular relations • Articulate castsArticulate casts
  14. 14. DesignDesign • Clasps (Wrought wire 0.02”)Clasps (Wrought wire 0.02”) − CircumferentialCircumferential
  15. 15. DesignDesign • Clasps (Wrought wire 0.02”)Clasps (Wrought wire 0.02”) − Ball claspsBall clasps •Rest and retentive elementsRest and retentive elements
  16. 16. DesignDesign • Clasps (Wrought wire 0.02”)Clasps (Wrought wire 0.02”) − Adams claspsAdams clasps •Rest and retentive elementsRest and retentive elements
  17. 17. DesignDesign • BracingBracing − Lingual/palatal major connectorLingual/palatal major connector provides bracingprovides bracing − Contacts teeth at the heights ofContacts teeth at the heights of contourcontour
  18. 18. DesignDesign • RestsRests − Usually wrought wireUsually wrought wire − Acrylic may be used over cingulumAcrylic may be used over cingulum rest seatsrest seats − Longer term use - cast retainersLonger term use - cast retainers
  19. 19. DesignDesign • Major ConnectorsMajor Connectors − Full palatal coverage increasesFull palatal coverage increases strength & stabilitystrength & stability − Extend denture to first molarExtend denture to first molar − Retentive clasps embedded into majorRetentive clasps embedded into major connectorconnector
  20. 20. Prescription WritingPrescription Writing • Mark teeth to be extracted on the cast &Mark teeth to be extracted on the cast & write the teeth number on thewrite the teeth number on the prescriptionprescription • Draw a line around the teeth where theDraw a line around the teeth where the cast should be surgerizedcast should be surgerized
  21. 21. Prescription WritingPrescription Writing • Survey the cast & mark height of contourSurvey 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 & bracingbracing
  22. 22. Prescription WritingPrescription 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 # & surfacesurface • Draw the outline of the denture on theDraw the outline of the denture on the castcast • Identify shade & mould of teeth selectedIdentify shade & mould of teeth selected • State the type of occlusion requiredState the type of occlusion required
  23. 23. AdjustmentAdjustment Commonly adjust: • interproximal extensions (A) • where clasp exits from resin (B) • tissue undercuts (C) (McCracken's Removable Partial Prosthodontics, 11th Ediion. Elsevier, 2005)
  24. 24. ‘‘Flipper’Flipper’ • Slang - No ClaspsSlang - No Clasps

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