Saturday, March 16, 2013

Teeth whitening

The patient should be familiar with the scope and possible consequences of the bleaching dental treatment, as not all candidates for bleaching 

In the last ten years, patients and dentists show a growing interest in teeth whitening, ie. procedure that lightens the color of teeth. Bleaching trend is growing ever since, and is on the market, various kinds of materials, as well as new, simpler and more effective method of whitening. Distinguish between viable and unvital whitening teeth. In all the methods and materials for bleaching takes place the same chemical process, which is oxidation. The material is mainly used for whitening is carbamide peroxide.

Successful bleaching depends on several parameters: uzetoj good history, a careful review which, among other things, establishes the existence of indications and contraindications for whitening the correct diagnosis and, ultimately, well-elaborated plan to achieve optimal results. In most cases you can achieve significantly Bright colored teeth, although the final result depends on the type of discoloration.

Several causes discoloration of the teeth:

* External discoloration - are formed on the enamel due to increased consumption of tea, coffee, red wine, strong spices, smoking, etc.. In the home, that is. early stage can be removed toothpaste, professional cleaning or sanding abrasive pastes teeth. However, over the years, becoming more intense discoloration and all the more difficult to remove, so that in these cases, provided that the tooth enamel is damaged, bleaching can achieve successful results.
* Internal discoloration - the consequence of delay colorigenic materials in dentin and enamel. Such discoloration can occur preeruptivno (before birth) and posteruptive (after birth). Thus, for example, the use of tetracycline antibiotics in the second trimester of pregnancy leads to a delay in the structure of tetracycline during tooth calcification of dental germs child. Reasons unvital teeth discoloration often associated with dental trauma and necrosis. The tooth trauma can cause bleeding within the pulp and may not immediately lead to its necrosis. But if there is pulp necrosis degradation of pulp tissue, when organic molecules can penetrate the dentinal tubules in the dentin.
* Iatrogenic causes (due to the therapeutic process) - Some of the reasons for the incomplete removal of the pulp tissue in the chamber during tooth trepanation, when a piece of tissue left behind and become necrotic, which is usually the case with the front teeth: bad root canal filling, especially the old filling material, for example. zinc oxide-eugenol pastes, old amalgam fillings, especially those that have been posted without the substrate, resulting in grayish coloration of the teeth.

Contraindications to whitening procedures - It is primarily patient age. Lower age limit for patients older than ten years, and there is no upper limit. Older patients, however, must be aware of the fact that the surface of the tooth root remains darker than the bleached crown. Bleaching is not recommended for pregnant women and nursing mothers. Moreover, habits such as smoking, frequently drinking coffee, tea and red wine over the slow process of treatment, and after bleaching reduce durability of achieved results.

What to expect
Before the procedure the patient should be informed of the possible ramifications and consequences of dental treatment during bleaching. In fact, not all patients are candidates for whitening. Teeth yellow and yellow-brown shades are easier to whiten than those of blue-gray shades. Also, discoloration caused by tetracycline antibiotics can discolor much harder and longer treatment and a combination of techniques.

Bleaching vital teeth

For whitening at home, the personal and the most practiced, used carbamide peroxide preparations in a concentration of up to 22 percent. Some products contain fluoride and potassium nitrate, which act as additional protection against sensitivity.
Before the bleaching is necessary to take a history, do a thorough review of the teeth and periodontal repair lesions and fillings with poor marginal seal, remove the hard and soft plaque and polish your teeth, tooth shade determined by key colors and take an impression of the individual making the splint.
When submitting material for splints and bleaching, the patient should be thoroughly addressed the wearing splints with gel on dental arch. It is important to note that, if the placing splints avoid the occurrence of pain or soreness in the teeth of cooling, the trays should be removed immediately, rinse your teeth and tell the dentist. Control is needed in two to three days.
The most common side effects of sensitization are vital bleaching damage the teeth and gums. It is mostly a light sensitivity that stops shortly after the end of treatment, over 24 to 48 hours. The patient is to be given a few days and preparation for desensitization. However, if the pain is unbearable and cooling, the process should be stopped immediately, and placed a splint material for desensitization based on potassium nitrate, which currently operates.

Teeth whitening unvital

The most common cause of tooth discoloration unvital pulp tissue decay is accompanied by bleeding, which is a common consequence of traumatic injury. In addition, can cause discoloration and pulp tissue remains after poor endodontic root canal treatment. However, regardless of the cause, the degree of discoloration is directly linked to the time between the loss of pulp vitality and initiation of therapy. In other words, the longer the time, the penetration into dentinal tubules is deeper and stronger discoloration.So the first requirement for a successful teeth whitening unvital correctly performed endodontic treatment.
In the bleaching technique is of particular importance to protect the well entrance into the root canal. The material is used in this case is 35-percent carbamide peroxide. As for the technique, after isolation of soft tissue material is applied to the tooth cavity and the outer surface of the tooth, and leave for a few minutes.The tooth is then thoroughly rinse and dry and check the color. The procedure can be repeated two more times for ten minutes. If necessary, repeat the procedure the next day. When you achieve the desired color, followed by a period of stabilization in color, and after 10 to 14 days produced a restoration (filling).
The latest method is the application of bleaching CO2 laser, which is about 10 minutes in the office to change the color of teeth two shades.
Finally it is important to say that, in addition to following the instructions, self-discipline and nepretjerivanje in applying the whitening gel, whitening achieved satisfactory results, with effects that are rather damaging to the structure of the tooth. 

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