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ACRYLIC AND FLEXIBLE
REMOVABLE PARTIAL
DENTURES
An acrylic RPD consist of an acrylic resin
denture base , artificial teeth, and wrought
wire clasp or even cast clasps.
Acrylic RPD
1.Interim partial denture
• young patient
• Diagnostic
2. Transitional partial denture
• expected tooth loss
• Immediate denture
3-Treatment acrylic partial
denture
• Cost
• Ttt for oral tissue abused
• Splinting
• Night guard
• Geriatric or elderly patients
EXPECTED TOOTH LOSS
NIGHT GUARD
cheaper alternative
Good appearance
easy to construct in lab
easy to repair and reline
Poor thermal conductivity
Relatively bulky
low impact strength (fracture
Lack of ideal support(gum stripping)
'SPOON' DENTURE
Design for the replacement of one or two anterior teeth in young people is the. It reduces gingival margin coverage to a minimum, but a potential hazard is the risk of inhalation or ingestion. A more stable and therefore more widely applicable design is the modified spoon denture. Here one has the choice of relying on frictional contact between the connector and the palatal surfaces of some of the posterior teeth, or of adding wrought wire clasps.
EVERY’S DENTURE
Restoring multiple bounded edentulous areas in
the maxillary jaw.
FIVE PRINCIPLE IN EVERY’S DENTURE
1.Restoration of contact points between
the artificial teeth and abutment
2.Broad area
coverage
3.Open design of
saddle tooth
junction. 4.Lateral
and
anterior
posterior
stability
FLIPPER DENTURE
Simple Circlet clasp
Half Jackson clasp or
Adam's clasp
FLEXIBLE DENTURE
Flexible denture (soft dentures) is generally used
when traditional dentures cause discomfort to
the patient.(polyamide nylon material)
INDICATIONS
1. In patients who are allergic
to metallic denture base
2. In patients with bony
exostoses that cannot be
removed, flexible partial
dentures show good retention.
3. patients having
microstomia,
systemic diseases like
scleroderma
ADVANTAGES
Engage the undercut beneath the bony
exostoses.
Flexible denture flanges for patients exhibiting
undercut tuberosities can solve this problem
Lightweight
Better esthetics
Ease of fabrication
DISADVANTAGES
1. Intended only for provisional or temporary use
2. Debonding of the acrylic teeth from nylon
denture base
3. Tend to absorb water content and will discolor4.
High surface roughness and low hardness
4. Technique sensitive
5. Cannot be relined
6. Difficult to polish and adjust