3. INTORUDCTION TO NANOTECHNOLOGY
• Term “Nano” is derived from a
Greek word “dwarf”.
• Nanoparticles size one
billionth meter (10*-9).
• Uses of nanotechnology used
in small devices such as
electrons ,sensors ,etc.
5. NANOTECHNOLOGY IN PREVENTION
CARIES
Silver, zinc oxide, and gold nanoparticles
incorporated into toothpastes can
significantly lower the antimicrobial action
of Streptococcus mutans which causes
dental caries.
6. PHOTODYNAMIC THERAPY
Antimicrobial photodynamic therapy
(aPDT) is a relatively newly introduced
treatment modality for removal of
infectious pathogens. It uses a
photosensitizer and light of a specific
wavelength, eg, toluidine blue at 600-
nm wavelength. Effective oral biofilm
destruction with methylene blue dye.
7. NANOCOMPOSITES
Nanoparticles evenly distributed in
composite resins have been
successfully used. The Nanofiller
used in composites exhibit superior
physical properties leading to the
excellent clinical outcome
8. ADVANTAGES OF NANOTECHNOLOGY IN
DENTISTRY
1. Superior hardness, flexural strength,
modulus of elasticity, translucency,
durability of Nano-dental materials and
excellent handling properties of all
Nano-dental products
2. Reduced frequency of visits to the
dental clinics for patients and less
fatigue for the practitioners.
3. Better aesthetics.
9. 4-Faster and accurate diagnosis of oral diseases with small diagnostic
machinery.
5- Reduced span of treatment procedures with faster healing properties.
6-Obvious better outcome of the treatment procedures.
10. DISADVANTAGES
1. Numerous ethical
issues to deal with (so-
cial acceptance is
necessary).
2. Toxicity thus
associated with the
nanoparticles is harmful
to human beings as well
as to the environment.
3. Subsequent
irretrievable genetic
information loss that
was essential for better
prospects of Nano-
