When Teeth Whitening Does Not Work

Did you know that in certain cases, teeth whitening is not
advisable and may not be hundred percent effective? For
example, for children below sixteen years bleaching is not
advisable since the pulp chamber or the nerve of the tooth
remains enlarged.

Teeth whitening below this age may cause irritation of the
pulp or could make it more sensitive. Similarly, pregnant
women as well as lactating mothers should also not undergo
this process.

Moreover, people having sensitive teeth and gum problems,
receding gums and problems or defects in restoration must
opt for their dentist’s advice before undergoing the
process.

Similarly, those having allergies to peroxide are also not
recommended to undergo the bleaching process.

Diseases in gums and teeth and decaying enamel are also not
suitable cases for teeth whitening. Any cavity in the tooth
may cause the bleaching solutions to seep into the existing
decay causing further irritation.

Again, people having exposed tooth roots are also
discouraged since these roots do not have enamel cover.

Teeth containing any kind of filling like crowns, veneer,
bonding and bridges can not be bleached. Doing so may
result in uneven whitening and it is advisable to complete
the whitening process two weeks before the fillings.

While the yellowish stains can be whitened easily, brown,
gray, bluish-gray and purple ones show less response to
teeth whitening.

Moreover the result may also vary from person to person.
Smokers must refrain from smoking during teeth whitening
the process to get the best results. The desired color
should be a shade whiter than the whites of an eye.

Source: https://positivearticles.com