Poster 654c3i

EVOLUTION OF MAXILLOFACIAL PROSTHETIC MATERIALS st 1

Dr.Ankita Rathi,

year resident; Department of Prosthodontics; Peoples Dental College & Hospital Guide: Prof. Dr. Suraj R B Mathema

“it is the god-given right of every human being to appear human.” Maxillofacial prosthesis serves as life-changing milestone for patient losing an eye, ear, or nose or sustained damage to intraoral structures. Therefore, Maxillofacial prosthetic materials are expected to be desirable, and attain ideal physical, aesthetic, and biological properties in order to gain patient acceptance. .

REQUISITES

FATHER OF MAXILLOFACIAL PROSTHESIS

Physical

Biological

Processing Ambroise Paire (1510-1590)

Nasal , Eye & Ear Prosthesis

Advantage

Disadvantage

Easy to process Intrinsic and extrinsic coloration possible Adequate strength

Rigidity High thermal conductivity Duplication of prosthesis not possible

Advantages

ACRYLIC Disadvantages  Loss of plasticizer

 Flexible

 Poor dimension stability

 Better appearance

 Early staining Short life expectancy

 Intrinsic & extrinsic colouration

VINYL PLASTISOLS

Edges tear easily  Absorbs secretions

Advantages Flexibility – moveable tissue beds Good edge strength  Coloration possible  Good masking effects with cosmetic agents

Advantages  Inert  Superior esthetic qualities  Better strength  Durability

Disadvantages Difficult to process.

Short life

Isocyanates sensitive to moisture

Improper adhesion

 Poor color stability

 Free isocyanates toxic

POLYURETHANE Disadvantage

low tensile strength low tear strength Insufficient elasticity Difficult to color

SILICONE

Conclusion: To date, none of the commercially available materials satisfy all the requirements of the ideal material. Each

material has its own advantages and disadvantages. Future research should concentrate on two major goals. 1) Improving the properties of materials, so that it will behave more like human tissue. 2) Color-stable coloring agents for coloring facial prosthesis.

EVOTULION OF MAXILLOFACIAL PROSTHETIC MATERIALS “it is the god-given right of every human being to appear human.”

Maxillofacial prosthesis serves as life-changing milestone for patient lost an eye, ear, or nose or sustained damage to intraoral structures. Therefore, Maxillofacial prosthetic materials are expected to be desirable, and attain ideal physical, aesthetic, and biological properties in order to gain patient acceptance. .

REQUSITES

FATHER OF MAXILLOFACIAL PROSTHESIS

Physical

Biological

Ambroise Paire

Processing

(1510-1590) Nasal & Ear Prosthesis

ACRYLIC

Disadvantage Rigidity High thermal conductivity Duplication of prosthesis not possible

Disadvantages: • Loss of plasticizer Advantages:

• Poor dimension stability

• Flexible

• Early staining

• Better appearance

• Short life expectancy

• Intrinsic & extrinsic colouration

• Lacks life like translucency • Edges tear easily • Absorbs secretions

VINYL PLASTISOLS

POLYURETHANE Disadvantages

Advantages:

• Difficult to process.

• Flexibility – moveable tissue beds

• Isocyanates sensitive to moisture

• Life like feel to touch

• Poor colour stability

• Good edge strength

• Short life

• Colouration possible • Good masking effects with cosmetic

agents

Advantages: • Inert

Conclusion:

•

Superior esthetic qualities

•

Better strength

•

Durablity

• Improper adhesion • Free isocyanates - toxic

SILICONE