Acrylic removable partial dentures - Minia

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