SMART DENTAL MATERIALS

DONE BY,MUGILAN.A,THIRD YEAR BDS.

Synthetic materials that interact with external stimuli such as light,temperature,stress,moisture,pH and electric or magnetic field in such a way as to alter specific properties in a controlled fashion.

The key feature of the material is to return to its original state on removal of stimulus.

SMART MATERIALS BIORESPONSIVE MATERIALS

ELECTRIC FIELD

MAGNETIC FIELD

PH

LIGHT

TEMPERATURE

•SENSE A CHANGE IN ENVIRONTMENT AND RESPOND UNDER CONTROL SYSTEM

•SENSE A CHANGE IN ENVIRONTMENT AND RESPOND

•CANNOT TRANSDUCE ENERGY

•ACT AS SENSORS

•CAPACITY TO MODIFY GEOMENTRIC OR MECHANICAL PROPERTIES.

•CAN TRANSDUCE ENERGY

ACTIVE PASSIVE

INTELLIGENT

VERY SMART

SMART MATERIALS IN DENTISTRY

The usage of smart materials in dentistry began in the year 1980’s.but its importance and application flourished in the 20 th century.

The ideal requirements of smart materials in dentistry are,

Non toxic to human cells, Toxic to microbes and fungi, Should form excellent seal between oral cavity and

underlying structures, Sufficiently bioactive, Should be similar to oral tissues, Easy manipulation and optical clinical performance, Esthetically pleasing appearance.

Shape memory alloys-nitinol

SUPERELASTICITY SHAPE MEMORY RESISTANCE TO FATIGUE AND WEAR

HOW????

NITI IN ORTHO ARCH WIRES

NITI IN ENDO Endodontic files.

NITI IN IMPLANTS AND PROSTHESES

Single tooth implants,

Endoseous implants.

Smart composites

Composites with rechargeable calcium and phosphate ions helps to overcome failure of composite restoration by secondary caries.

Nano filled amorphous calcium phosphate particles.

HOW???

Smart ceramics - ZIRCONIA

The new transformation toughened zirconia posses high strength compared to conventional zirconia. This smart behavior is due to transformation strengthening .

TRANFORMATION TOUGHENING

ZIRCONIA IMPLANTS AND ABUTMENTS

Smart glass ionomer cements

MIMIC EFFECT RECHARGEFLUORIDE RELEASE

GIC mimic the effect of dentinal tubules.

The water flowable character through the porosities resemble the dentinal tubules.

Recharge of fluorides

SMART FIBERS IN LASERS

Hollow-core photonic-crystal fibers (PCFs) for the delivery of high-fluence laser radiation are used for ablating tooth enamel.

The hollow-core PCF is shown to support the single fundamental-mode regime for 1.06μm laser radiation, serving as a spatial filter and allowing the laser beam quality to be substantially improve.

. The same fiber is used to transmit emission from plasmas produced by laser pulses on the tooth surface in the backward direction for detection and optical diagnostics.

With evolving technologies it is hoped that in the near future, development of dental materials with controlled structure and properties will be a reality and with numerous applications these materials have been put to, no doubt that “smart materials” hold a real good promise for the future.

Conclusion:

THANK YOU…