Temporary Partial Denture

By: Hussein Abd El-hady Hussein Taha

Lecturer of Removable Prosthodontics and Implantology

Faculty of Dentistry – Minia University

TEMPORARY REMOVABLE PARTIAL DENTURES

• Removable partial dentures that are designed to be used for short

intervals and considered as a part of a total prosthodontic

treatment.

TEMPORARY REMOVABLE PARTIAL DENTURES

• An acrylic RPD consist of an acrylic resin denture base , artificial

teeth, and wrought wire clasp or even cast clasps.

Indications:

Appearance.

Space Maintenance.

Re-establishing occlusal relationships.

Conditioning teeth and residual ridges.

An interim restoration during treatment.

Conditioning the patient for wearing a prosthesis.

When cost is a prime requisite.

Children - permanent prosthesis would be quickly outgrown

Temporary space maintenance (caries, trauma, congenitally missing teeth)

Treatment Denture

Tissue conditioning

Treatment Denture

Implant healing

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)

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

TYPES of temporary partial denture

A) Interim partial denture

It is designed to enhance esthetics, stabilization and/or function for a limited

period of time.

It is usually made of acrylic resin with wrought wire clasps. It may be

indicated when age and time factors may prohibit the construction of the

definitive prosthesis.

TYPES of temporary partial denture

B) Transitional removable partial denture

This is a removable partial denture serving as an interim prosthesis to which

artificial teeth will be added as will be replaced by the definitive prosthesis

after tissue changes have occurred. It may become an interim complete

denture when all natural teeth have been removed from the dental arch.

TYPES of temporary partial denture

C) Treatment removable partial denture

It is another form of interim prosthesis that is used for the purpose of treating

or conditioning the tissues.

TYPES of temporary partial denture

The all acrylic RPD

They consist of an acrylic denture base, artificial teeth and wrought

wire clasps or cast clasps. They are indicated for all the same reasons

mentioned for the temporary RPD.

Advantages

Less expensive than skeleton RPD.

Light in weight.

Simpler in design and easily constructed.

A lost natural tooth can be easily added.

Easily repaired and relined.

Provides good esthetics and provides good labial and buccal support.

Easily adjusted.

Disadvantages

Lower strength than metallic framework, and so it must be

constructed in thicker sections.

Less patient tolerance.

Poor thermal conductivity.

Tendency for warpage.

Does not provide tooth support or indirect retention when needed.

It is mucosa borne acrylic RPD without clasps that replaces missing maxillary

anterior teeth.

Dentures whose retention depends primarily on control by the patient’s

musculature.

Spoon denture

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.

Where an acrylic denture is provided, tissue damage is minimized by careful

design, “spoon” denture. It reduces gingival margin coverage to a minimum

but a potential hazard is the risk of inhalation or ingestion.

Spoon denture was modified by frictional contact between the connector and the

palatal surfaces of some of the posterior teeth or by adding wrought wire clasps.

Which can be used for restoring multiple bounded saddle areas in the

upper jaw.

Every denture

Restoring multiple bounded edentulous areas in the maxillary jaw.

Every denture

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

All denture borders are at least 3 mm from the gingival margins.

The “open” design of saddle/tooth junction is employed.

Point contact between the artificial teeth and abutment teeth is established to reduce

lateral stress to a minimum.

Posterior wire “stops” are included to prevent distal drift of the posterior teeth with

consequent loss of the contact points.

Flanges are included to assist the bracing of the denture.

Lateral stresses are reduced by achieving as much balanced occlusion and articulation

as possible.

The inaccurate fit will encourage plaque formation with consequent periodontal

disease and caries, thus introducing an unnecessary and avoidable risk to oral

health.

Disadvantage

A) The mucosa will become inflamed and the bone resorption will occurs .

B) The amount of bone which has been destroyed is apparent when the denture

is removed.

A) B)

FLIPPER DENTURE

Simple Circlet

clasp Half Jackson

clasp or Adam's

clasp

FLEXIBLE DENTURE

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

Which has extensions into undercuts on the labial surfaces of the teeth.

The swing-lock denture

ADVANTAGES

The denture can be particularly helpful where the remaining natural

teeth offer very little undercut for conventional clasp retention.

The “gate” can carry a labial acrylic veneer. This veneer can be used

to improve the appearance when a considerable amount of root

surface has been exposed following periodontal surgery.

Disadvantage

As this type of denture covers a considerable amount of gingival

margin, the standard of plaque control must be high.

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

• Maxillomandibular relations

• Articulate the casts

DESIGN

Clasps (Wrought wire 0.02”)

Circumferential

DESIGN

Clasps (Wrought wire 0.02”)

Ball clasps

Rest and retentive elements

Clasps (Wrought wire 0.02”)

Adams clasps

Rest and retentive elements

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

• Survey the cast & mark height of contour & retention areas (0.02”)

• Indicate type of retentive clasp, rest & bracing

• 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)

Sincerely :Dr. Hussein A. Hady Hussein

Dr_Hussein_hady@yahoo.com