How to get white teeth
Written by: External Teeth whitening is now one of the simplest and conservative aesthetic techniques. Although his name is external, which seeks whitening is the dentin. The crown of the tooth structure is made up of enamel, outermost part translucent crystal; dentin, intermediate layer and it really gives color to the tooth; and dental pulp, internal structure. 
Do teeth are white?
The internal color of the dentin is determined genetically, is an innate characteristic of each of us, as is the color of the skin. You can have an infinite range of colors within white (orange-yellow, gray-green, gray-pink or reddish-brown) with corresponding gradations of intensity. This color internal database can not be changed with any whitening, but what can be achieved is a clarification to a greater or lesser extent the base color. Specialist dentistry will have to determine that color basis to properly focus the treatment.
In this sense, we are always talking about whitening base located inside the tooth color, as the external stains such as those caused by snuff, or other stains on the tooth surface, they can be quickly removed with the tartar and plaque with a dental cleaning. Do not confuse enamel stains caused by external agents with intrinsic tooth coloration, why cleaning the mouth and dental whitening are two different processes.
What is teeth whitening
Before undergoing such treatment specialist should study the case to avoid creating false expectations. Also the intensity of bleaching depends on each patient and his age, being eg younger who receive a better result. In general the effect is positive in almost all teeth, even in many cases tetracycline, ie teeth with brown or gray stripes, although in the latter mentioned strips do not disappear, but only clarified.
The external tooth whitening will without anesthesia sensitivity to perceive because it is actually the tooth is that we will indicate how far we can whitening, nothing we had better have a very white teeth if we have hypersensitive. If during the procedure sensitivities are many, we will have to stop and go in another session, or stop treatment because there definitely the tooth does not allow us to go further.
At the end of treatment and the next day the teeth can and do become slightly sensitive and the surrounding gingiva even sometimes may require taking painkillers the day of treatment, but we must say that these complaints, if any, will be temporary and low intensity if the correct protocols are followed.
Results of tooth whitening
After bleaching, teeth bleaching in and will continue to the final color will remain unchanged for 2-7 years, depending on each patient. Even though dims after these years, 
Color never be like the beginning. In the event that reappears a bit, simply make a reminder session shorter than the initial one.
