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Laser whitening uses light to increase the efficiency of the products used

Laser whitening uses light to increase the efficiency of the products used

A frequent question my patients have involves dental bleaching, its risks, benefits and techniques. Here's my explanation: The purpose of whitening is to decrease the size of the pigment molecules inside the tooth structure, making them reflect more light and thus appear to be lighter. There are several techniques that can be employed for this purpose, although all of them use free oxygen as the final bleaching agent. In the case of vital teeth (which had no treated canals), the best whitening result is obtained through the association between the bleaching agent (peroxide) and the tooth and how to use it. of techniques, ie the combination of outpatient or office whitening (commonly known as laser bleaching) and whitening with bleach (commonly known as home bleaching).

Outpatient bleaching can only be performed under the supervision of a a dental surgeon, because the bleaching gel used has a high concentration of peroxide - the active agent is usually 35% hydrogen peroxide, which should not come into contact with the gingiva because it is caustic. During the procedure in the office, the lips are removed and the gingiva is protected with a light-curing resin, which hardens with a blue light of the type L.E.D. (Light Emitted by Diode). On the dry teeth is applied the gel, which must remain for at least 15 minutes. During that time, the light source would be applied, which, in the great majority of cases, is not a laser but a L.E.D. high power laser beam with a very small beam of low power laser between the L.E.D. The function of light would be to activate the gel, either by enzymatic action or by heat. However, the scientific literature has not been able to prove that there is greater benefit from the application of light, ie it is not necessary to apply any light source during outpatient bleaching in order to achieve satisfactory results. In addition, it is necessary to warn that the application of light can increase the sensitivity of the patient by the incidence of heat on the tooth, without improving the effectiveness of the bleaching.

The main advantages of the ambulatory bleaching would be the speed of whitening, which appears to be greater for the patient, because the bleaching effect is associated with the teeth whitening effect, resulting from the dehydration of the dental tissues during the procedure. Bleaching is not stable as whitening. Individual bleaching with trays uses gels with a lower concentration (from 10 to 22%) and different formulations, which may be based on hydrogen peroxide or carbamide peroxide (this, in contact with water, dissociates into hydrogen peroxide and urea, raising the pH and preventing demineralization of the more superficial layers of the tooth enamel). This technique depends entirely on the patient's discipline, which will use the custom tray loaded with the gel from 30 minutes to 2 hours daily or for 6 to 8 hours at night for at least 14 days and at most 6 months to reach satisfactory color. The safest concentration of the gel in this technique is 10%.

The ideal is to associate techniques to optimize results. An ambulatory bleaching session followed by 14 days of daytime bleaching with a tray seems to bring fairly satisfactory results.


Liposuction: how to know when there is indication for the procedure and its derivatives

Liposuction: how to know when there is indication for the procedure and its derivatives

Although a body considered healthy has a tonus and adequate proportions, beauty may fall short of desire because of the personal or hereditary predisposition to accumulate localized fat. Even young people who exercise regularly may be bothered by this situation and in these cases only liposuction can fine-tune and give the final touch to the desired silhouette of the region where you have localized fat.

(Beauty)

Hair coloring: know the care and contraindications of the procedure

Hair coloring: know the care and contraindications of the procedure

Coloring is any treatment that changes hair color. To do this, two types of products are used, which have different effects on the yarns: Tonalizantes These are non-ammonia-free stains that do not lighten, only intensify the color for nuances close to the original yarn tone. They can also cover white hair in a more natural way.

(Beauty)