1. Interim Removable PartialInterim Removable Partial
DenturesDentures

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. 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. 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)

7. 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)

11. 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

15. IndicationsIndications
• Treatment DentureTreatment Denture
− Improve a condition before a definitiveImprove a condition before a definitive
denturedenture

16. IndicationsIndications
• Treatment DentureTreatment Denture
− Tissue conditioningTissue conditioning

17. IndicationsIndications
• Treatment DentureTreatment Denture
− Implant healingImplant healing

18. 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

21. 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)

22. 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

23. Interim Prosthesis FabricationInterim Prosthesis Fabrication
• Maxillo-mandibular relationsMaxillo-mandibular relations
• Articulate castsArticulate casts

24. DesignDesign
• Clasps (Wrought wire 0.02”)Clasps (Wrought wire 0.02”)
− CircumferentialCircumferential

25. DesignDesign
• Clasps (Wrought wire 0.02”)Clasps (Wrought wire 0.02”)
− Ball claspsBall clasps
•Rest and retentive elementsRest and retentive elements

26. DesignDesign
• Clasps (Wrought wire 0.02”)Clasps (Wrought wire 0.02”)
− Adams claspsAdams clasps
•Rest and retentive elementsRest and retentive elements

27. DesignDesign
• BracingBracing
− Lingual/palatal major connectorLingual/palatal major connector
provides bracingprovides bracing
− Contacts teeth at the heights ofContacts teeth at the heights of
contourcontour

28. 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

29. 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

30. 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

31. 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

32. 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

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

34. ‘‘Flipper’Flipper’
• Slang - No ClaspsSlang - No Clasps