materials which responds to specific stimulus and return to its original form on removal of stimulus

1. SMART DENTAL MATERIALS
DONE BY,
MUGILAN.A,
THIRD YEAR BDS.

2.  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

3. ELECTRIC
FIELD
MAGNETIC
FIELD
PH
LIGHT
TEMPERATURE

4. •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
INTELLIG
ENT
VERY
SMART

5. 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.

6. Shape memory alloys-nitinol
SUPERELASTICITY SHAPE MEMORY
RESISTANCE TO
FATIGUE AND WEAR

7. HOW????

8. NITI IN ORTHO
 ARCH WIRES

9. NITI IN ENDO
 Endodontic files.

10. NITI IN IMPLANTS AND PROSTHESES
 Single tooth implants,
 Endoseous implants.

11. 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.

12. HOW???

13. Smart ceramics - ZIRCONIA
The new transformation toughened zirconia posses high strength compared to conventional
zirconia. This smart behavior is due to transformation strengthening .

14. TRANFORMATION TOUGHENING

15. ZIRCONIA IMPLANTS AND ABUTMENTS

16. Smart glass ionomer cements
MIMIC EFFECT RECHARGE
FLUORIDE
RELEASE
 GIC mimic the effect of dentinal tubules.
 The water flowable character through the
porosities resemble the dentinal tubules.

19. Recharge of fluorides

20. 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.

21. . 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.

22. 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:

23. THANK YOU…