Transcript Interim / Provisional Removable Partial Dentures Dr. Praveen s 10.05.2015

Interim / Provisional
Removable Partial Dentures
Dr. Praveen s
10.05.2015
Interim Removable Partial
Dentures
 Short period of time
 Prior to a definitive denture
 Acrylic major connector, wrought wire
clasps
Indications
 Large pulps (can’t fabricate bridge)
 Clinical crowns too short
 No usable undercuts
Indications
 Children - permanent prosthesis would
be quickly outgrown
 Temporary space maintenance (caries,
trauma, congenitally missing teeth)
Indications
 Temporary time or financial constraints
 Sudden loss of teeth, before sufficient
healing has occurred (accidents, after
extractions)
Indications
 Transitional Denture
 Transition to a complete denture
 Teeth need to be extracted but not
immediately (medically
compromised)
 Patient is not psychologically
prepared
Indications
 Treatment Denture
 Improve a condition before a definitive
denture
Indications
 Treatment Denture
 Tissue conditioning
Indications
 Treatment Denture
 Implant healing
Indications
 Treatment Denture
 Alteration of vertical dimension /
occlusion
 Determine how patient will respond
to changes (TMD)
 Surgical Splint
 Removal of palatal tori
Interim Prosthesis Fabrication
 Preliminary impressions
 Design the definitive partial denture
(interim denture will use similar design)
Interim Prosthesis Fabrication
 Optional Step (preferred)
 Tooth preparations for a definitive
RPD
 New alginate impression
Interim Prosthesis Fabrication
 Maxillo-mandibular relations
 Articulate casts
Design
 Clasps (Wrought wire 0.02”)
 Circumferential
Design
 Clasps (Wrought wire 0.02”)
 Ball clasps
 Rest and retentive elements
Design
 Clasps (Wrought wire 0.02”)
 Adams clasps
 Rest and retentive elements
Design
 Bracing
 Lingual/palatal major connector
provides bracing
 Contacts teeth at the heights of contour
Design
 Rests
 Usually wrought wire
 Acrylic may be used over cingulum
rest seats
 Longer term use - cast retainers
Design
 Major Connectors
 Full palatal coverage increases
strength & stability
 Extend denture to first molar
 Retentive clasps embedded into major
connector
Prescription Writing
 Mark teeth to be extracted on the cast &
write the teeth number on the
prescription
 Draw a line around the teeth where the
cast should be surgerized
Prescription Writing
 Survey the cast & mark height of contour
& retention areas (0.02”)
 Indicate type of retentive clasp, rest &
bracing
Prescription Writing
 Indicate where rests, retention arms &
bracing are to be placed, state tooth # &
surface
 Draw the outline of the denture on the
cast
 Identify shade & mould of teeth selected
 State the type of occlusion required
Adjustment
Commonly adjust:
• interproximal extensions (A)
• where clasp exits from resin (B)
• tissue undercuts (C)
(McCracken's Removable Partial Prosthodontics, 11th
Ediion. Elsevier, 2005)
‘Flipper’
 Slang - No Clasps