External stains: Stains that are appeared on the surface of teeth as a result of consumption
of certain kinds of beverages like tea, coffee, cola, and tobacco, etc. Minor stains can be
removed by brushing. But stubborn stains need extra efforts to be removed like teeth
whitening. stubborn stains penetrate into the dentin and established permanently if they are
not dealt with properly.
Natural stains: These stains form on the inner surface of the teeth due to trauma, aging, or
excessive ingestion of fluoride. It was considered before that these kinds of stains can not be
corrected by bleaching. But now, according to cosmetic dentistry, I believe that intrinsic
stains can be removed by a teeth whitening kit if it is done under the supervision of a
professional.
Painless Teeth Whitening procedure:
The teeth whitening process involves the concentration of hydrogen peroxide and depends on
the application of time.
Teeth whitening process can be done at the dental office or at home.
The major benefit of teeth whitening at the office is that you can get it done in a short period
of time. In addition, the process involves controlled high-concentration peroxide gel, that is
applied to the stained teeth by the dentist after the protection of gums with a paint-on rubber
dam. Normally, the peroxide remains on the teeth for specific intervals of fifteen to twenty
minutes to remove the stubborn stains. Generally, the dentists advise visiting the office one
for one or more sessions if needed.
On the other hand, you can also purchase home whitening kits that are easy to use with lower
concentration peroxide gel that has to ramen on teeth for an hour or longer for getting the
best results.
Teeth whitening cost maybe $650 per visit nationwide. At home, the process may cost
between $100 to $400.