Flexable Denture Material

8/11/2019 Flexable Denture Material

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CO-ORDINATOR

DR.MD.AMZAD HOSSAIN

ASSIST.PROFESSOR

DEPARTMENT OF PROSTHODONTICS

BSMMU DHAKA


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Removable Partial Denture is a dental

prosthesis that replaces one or more teeth,

but not all in the arch and patient canremove the prosthesis.


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The Partial denture accomplishes multipleobjectives for the patient, namely

It fills in the spaces created by missing

teeth

It prevents other teeth from shifting orsupraerupting,

Enhances chewing function, restoresocclusion and balances chewing forces


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Prevents un-natural wear of the natural teeth,reduces or eliminates speech impairment.


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Cast Metal with Acrylic Resin

Acrylic resin based partial

Flexible denture based resin


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Cast Metal Removable

Partial Denture

Removable Partial Denture

Flexible Denture


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All are fairly similar in design configuration, but each materialoffers the patient a different dimension. For example, CastPartials might have superior strength, but Flexible Partials offer

superior comfort and aesthetics. Acrylic Partials offer somestrength and aesthetics, but their greatest asset might be thatthey are basic and financially friendly. The flexible nature of theresin material makes a better and stronger prosthesis in ashorter amount of patient appointment time. It also is unique inthat traditional metal partials have noticeable, unattractive metalclasps across the front surface of the natural teeth, while theFlexible resin blends with the natural color of the tissueproviding virtually invisible support and a more pleasing smile.Patients have come to recognize the value of a Flexible Resinmore aesthetic and natural look and appreciate added comfort.


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These are the dentures that can be fabricated by some newmaterials and new technologies which provide flexibility tothe denture base as well as to the other components of the

removable dentures. Most of the materials areBiocompatible Nylon Thermoplastic Resin based.


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These dentures are exceptionallyFracture Resistant.

The denture base as well as other

components are flexible.

Tissue Under Cutscan be used forbetter retention of the dentures. So

undercuts are no longer disadvantagenow-a- days for dentist.


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Because of better retention and stability these denture areMore Functionaland provide better chewing efficiency.

No effect of residual monomer- so these dentures aremore Biocompatiblethan conventional PMMA dentures.

The long-term health of tissues and teeth is maintaineddue to the dentures gentle Massaging Action, achievedwithout adversely loading the abutments

More Aestheticas conventional metal clasp can beavoided and either tooth colored clasp or tissue clasp

can be used instead

Non-harmful to the abutment teeth.


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No chemical bond between the acrylicteeth and the denture base as a resultmechanical holes are to be made forlocking.

Chair side repair is not possible. Needproper curing procedure .


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Allergies to conventional denture

material

History of partial frame breakage

Alternative to implants or fixed

prostheses

Patient with high esthetic demand

Immuno-compromised patient

Patient with senile Aged syndrome


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Other uses for flexible resin partialdentures are:

TMJ splint Gum veneers Space maintainers Immediate dentures Replacement of missing teeth in pediatric cases Combination with metal framework

Transitional bridgework Periodontally compromised cases


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Retention - flexes into a retentiveposition, below the undercut.

Comfort - thin, light in weight andflexible.

Esthetics-pink shades allow naturaltissue tone to appear through material.

Strength - clinically unbreakable, moredurable than acrylic and won't absorbstains or odors.

Ease technique - no tooth or tissuepreparation is required so it offerspatients a conservative and pain-freesolution


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No special equipment is needed

Non-allergic to the patient

Clear clasps unnoticeable in the mouth

Self-adjusting when placed in medium hotwater before placement

Available color stable shades


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Press-packing a partial denture using

Flexible resin

Flexible resin partial denture material is

formulated to simplify the fabrication ofpartial dentures utilizing conventionallaboratory techniques. The non-methylmethacrylate can be processed with

either conventional press- packing techniquewithout the use of special equipments.


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Step-by-step procedures for

press-packing a partial denture

Diatoric holes should be drilledin teeth to ensure optimumretention. The use of bonding

agent is suggested.

Fig: shows: wax-up before

processing(on right side)


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1. Denture mold is prepared by usingflasking technique (Fig:1).

Fig. 1 Flex investment in

flask: First pour before

boil out.


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2. 1/2-ounce of liquid resin is added in the 1-ounceof powder into a clear measuring cup. Note: powderand liquid resin should be stored in the refrigeratorand removed just prior to mixing and pouring.

3. Combine liquid and powder in the mixing bowl andmix thoroughly. Then pouring the mixture into thedenture mold (Figs. 2 and 3).

4. As soon as mix reaches a doughy state (5 to8 minutes), packing into regular denture moldusing press-packing procedures (Fig. 4).

5. Then curing for two hours in water at 130F.

6. Cool for 15 minutes under cold running tapwater.


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Fig. 2

After

boil out apply separator-

Fig. 3 Flex invested after boil out-

Fig. 4 Flask in pressing unit-


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After the initial steps forpress-packing, finishing andpolishing is done. (Fig. 5)

Fig: Shows: finishedpartial denture (on theright side)


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Scientists are searching suitablematerials for patients comfort &aesthetics. Flexible resin materialsare recent invention of this century.This material can fulfill patientsdesire and aesthetic demand.


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Thank you all

Flexable Denture Material

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