Most tooth whitening range of dental products work effectively to
achieve whiter teeth which is why more dentist use tooth whitening
system all over the world more than ever before now. And to make tooth
whitening more interesting, tooth whitening system can be used both at
home or office.
Tooth whitening is the procedure for whitening the tooth crown that you
see in a mouth, but what is really targeted is the enamel of the crown,
the hardest substance in the human body, yet it quickly gets
discoloured if not kept clean always.
Teeth are really a living part of the body. They have blood vessels and
nerves. Teeth are enriched with lots of calcium. People who drink lots
of milk or take calcium supplements have strong bones and teeth which
are easier to maintain.
It won't surprise me if you are unaware that most of the tooth
whitening syringe delivered take-home bleaching gel have to be aproved
as convenient replacements to previous burdensome bleaching procedures
that lacked the sticky adhesive properties necessary to achieve optimum
result that works a whitening miracle in days instead of weeks.
Carbamide peroxide is the main ingredient in most tooth whitening
formula which has both potassum nitrate and fluoride that prevents
tooth sensitivity providing safety of very high standard because of
high productions standards.
A good example is Opalescence F and Opalescence PF both with PH of 6.5
and contained in syringes which some times can be seen to show small
bubbles; this does not mean that the product has been activated already
as a result of peroxide decomposition. The bubbles are simply there due
to the nature of its formulation. Product catalogue pictures show these
small bubbles even though pictures are, more often than not, taken
from out of production line stock.
Further more, it is not an a defect if a dark purple coloration should
appear in tray with bleaching in relation to other amalgams. This is
quite inconsequential as has been proven for many years now in clinical
use, which has never shown any adverse side effect on amalgam
restorations. Experts think that Zink present in old amalgams cause the
discoloration.
Because of the modification of anatomy in relation to oxidation that
eliminates dark intra-dental organic dyes, conjugated double bonds of
colour occur in different colour absorbing molecules. These are part of
the so called C-C=C-C=C-C= etc.
What really happens when bleaching takes place is that tooth sating
molecules are changed to alcohols and terminal arboxylic acids which
eats up light absorbing conjugated bonds that are really not cells but
unwanted dye in dentin and enamel of teeth.
This is why it is quite difficult to bleach the cervical ****tion of the
tooth than the incised edge. Reason is that enamel is thinner than
gingival so the dentin responds to bleaching easier than the enamel,
yet the dentin takes longer to bleach in comparison to the enamel of
the incised third.
A study carried out at the University of Texas (Barghi N, Morgan J.
Reducing the Adverse Effect of Bleaching on Composite Enamel Bond.
Journal of Esthetic Dentistry, 1994, Volume 6, Issue 4; 157-161) shows
that in pinch, one could bond immediately after bleaching using up to
35% carbamide peroxide with a mixture of A & B acetone specially made
for dentin bonding.
Now you may want to know at what age should one be considered mature
enough for teeth bleaching. Well, little is yet published on children's
teeth whitening or the whitening of primary dentition. But a University
of North Carolina study indicates that no one will respond to bleaching
with adverse site effect in terms of sensitivity because of age.
However, let it be a recommendation that to ensure thorough all level
whitening, all teeth should have erupted before bleaching is done for a
child, if not teeth that erupt after bleaching will definitely have a
darker shade than the bleached teeth.
Also about bleaching already restored tooth, it is advisable that the
composite restoration be left intact during bleaching and replace it
after bleaching. This should be done at least two weeks after bleaching
to ensure that the shade of the whitened teeth has stabilised after
peroxide has diffused out of the teeth to allow for better bonding.
Dentist and Orthodentist have since discovered the inevitability of
applying the awsome cleaning power of carbamide peroxide for tooth
whitening prior to the placement of veneers etc - no one, of course
should want a discolored tooth veneered.
Odidis
http://opalescence-tooth-whitening.fateback.com/opalescence-tooth2.html
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