Tooth whitening and bleaching; Complications and costs

Tooth whitening and bleaching; Complications and costs

Most people know that teeth whitening makes you look and feel better. But in addition to its cosmetic benefits, a white smile also improves your oral health. Whiter teeth deliver a smile that looks happy and healthy. When you invest in teeth whitening, you will feel motivated to take the best care of your smile. white teeth can also boost your self-esteem When you whiten your teeth, you no longer need to feel insecure when you laugh, smile, or eat. There is a wide selection of products and treatments claiming to instantly whiten your teeth. Be sure to consult with your cosmetic dentist to learn which whitening treatment is best for you.

Even after brushing and flossing, you may look at your smile in the mirror and want your teeth were whiter. Our specialists at Dr. Yeganeh Dental Clinic offer teeth whitening treatments to give you back your beautiful smile.  The treatments can be done In-office by the use of heat or laser light, or at home through tray-based tooth whitening systems supervised by dentist specialist.

For more information or to make an appointment at Dr. Yeganeh Dental Clinic you can call 02122392365 - 02122392366

Causes of tooth discoloration

Over time, your teeth can go from white to not-so-bright for a number of reasons:

If you’ve been hit in the mouth, your tooth may change color because it reacts to an injury by laying down more dentin, which is a darker layer under the enamel.

Tooth darkening can be a side effect of certain antihistamines, antipsychotics and high blood pressure medications. Young children who are exposed to antibiotics like tetracycline and doxycycline when their teeth are forming (either in the womb or as a baby) may have discoloration of their adult teeth later in life. Chemotherapy and head and neck radiation can also darken teeth.


There are two general approaches:

  • In-office bleaching – also called chairside bleaching or power bleaching
  • tray-based tooth whitening systems supervised by dentist
  • At-home bleaching which includes; Tooth paste and take home bleachings

in-office-based tooth whitening procedure: Lsaer treatment 

Laser tooth whitening

In offic teeth whitening is administered in a dental office exclusively, a protective gel or guard is positioned over the gums before the bleaching agent is applied, the bleaching agent is applied directly to the teeth, and heat generated by a laser enhances its effectiveness while ultimately speeding up the process. This procedure uses a strong bleaching gel that the laser activates and enhances for quick, dramatic results. it is a hydrogen peroxide gel that ranges from 25 to 40 percent in concentration levels. With these high concentrations, special precautions are taken to reduce tooth sensitivity, as well as protect the lips, gums and other oral tissues from being damaged. The affects from this bleaching process should last from 6 months to a year. This will greatly depends on the types of foods and drinks you include in your everyday diet. This also greatly depends on your general dental hygiene habits.

tray-based tooth whitening 

tray-based tooth whitening

For the more traditional types of teeth whitening procedures using tray-based tooth whitening systems provided through your dentist’s office, the first step involves filling a mouth guard-like tray with a gel-like whitening solution - which contains a peroxide-bleaching agent. This tray is then placed over the teeth and worn for a period of time, generally from a couple hours a day or every day during the overnight for up to 4 weeks and even longer (depending on the degree of staining and desired level of whitening).

At-home bleaching

At-home bleaching

All toothpastes help remove surface stains through the action of mild abrasives they do not contain bleach. they can lighten your tooth’s color by about one shade. In contrast, light-activated whitening conducted in your dentist’s office can make your teeth three to eight shades lighter.

The peroxide-based whitening gels and Whitening strips are over the counter bleaching products that  applied to the surface of the teeth. Instructions generally call for twice a day application for 14 days. Initial results are seen in a few days and final results are sustained for about 4 months.

The advantages of in-office bleaching procedure compared to At-home bleaching 

Strength of bleaching agent

over-the-counter home use products and dentist-supervised at-home products usually contain a lower strength-bleaching agent (from 10% carbamide peroxide–which is equivalent to about 3 percent hydrogen peroxide -- up to 22% carbamide peroxide). In-office, professionally applied tooth whitening products contain hydrogen peroxide in concentrations ranging from 15 to 43 percent. Although some teeth lightening will be achieved   by home bleaching products but, their degree of whitening is much lower than results achieved with in-office or dentist-supervised whitening systems

Mouthpiece trays

With dentist-supervised at-home bleaching products, your dentist will take an impression of your teeth and make a mouthpiece tray that is customized to exactly fit your teeth. This customization allows for maximum contact between the whitening gel, which is applied to the mouthpiece tray, and the teeth. A custom-made tray also minimizing the gel's contact with gum tissue.

Over-the-counter whitening products do contain a mouthpiece traythat the fit will not be exact. It can irritate the gum and soft tissue by allowing more bleaching gel to seep onto these tissues. With in-office procedures, the bleaching agent is applied directly to the teeth.

Additional protective measures

In the office setting, your dentist will apply either a gel to the gum tissue or use a rubber shield (which slides over the teeth) prior to treatment to protect your gums and oral cavity from the effects of the bleaching.

Speed of the bleaching process

Dentist-supervised at-home bleaching and over-the-counter bleaching products typically need to be applied every day for 1 or 2 hours or every overnight for up to 4 weeks. In-office bleaching provides the quickest and most effective way to whiten teeth. With in-office bleaching, the whitening product is applied directly to the teeth. These products can be used in combination with heat, a special light, and/or a laser. The light and/or heat accelerate the whitening process. Results are seen in only 1, 30- to 60-minute treatment.

To achieve dramatic results, however, several appointments are usually needed. With laser-enhanced bleaching, however, dramatic results can be seen after the first treatment.

Supervised versus unsupervised process

Dentist-supervised at-home bleaching and in-office treatment offer additional benefits compared with over-the-counter procedures. First, your dentist can perform an oral examination and consider your complete medical history, which can be helpful in determining how your teeth became discolored and if bleaching is an appropriate course of treatment based on your type of stains and number, type, and location of restorations. your dentist will likely to make sure the customized tray is fitting properl, and to generally check on how the teeth whitening process is proceeding. With over-the-counter bleaching products, you are on your own

How long will the  in office treatment last?

This will very from client to client and greatly depends on the types of foods and drinks you include in your everyday diet. This also greatly depends on your general dental hygiene habits.  The affects from this bleaching process should last from 6 months to a year.

After Professional Teeth Whitening

Your teeth are  porous from the teeth whitening procedure and can be particularly susceptible to staining immediately following the procedure. Here are some tips to follow for the next 48 hours to keep your teeth white and bright.

  • Avoid dark beverages such as tea, coffee, dark soda, red wine, Kool-Aid, or any colored drink. Your teeth can absorb the color for up to 3 days after your teeth whitening procedure.
  • Foods to avoid: grapes, tomatoes, cherries, raspberries, blackberries, mustard, spaghetti sauce, soy sauce, blue berries and blue berry muffins, dark stews, dark soups, dark chocolate, slushes and popsicles.
  • If you do eat any of these foods in the first couple of days after your teeth whitening treatment- brush your teeth and rinse your mouth immediately after eating.
  • Think of whatever would stain a white t-shirt, and that would also stain your teeth.
  • Don’t drink very hot or cold liquids as these extreme temperatures will cause your teeth to expand and contract, and permit the stains to penetrate.
  • Cigarette smoking stains your teeth.

Long-Term Maintenance After Professional Teeth Whitening(H2)

Drinking liquids that might stain through a straw helps maintain your white color. Also rinsing your mouth with water after drinking or eating a staining food will help, along with take-home teeth bleaching treatments .


Over-the-counter bleaching systems are the least expensive option. Depending on where you live and the extent of the procedure, the cost of dentist-supervised home bleaching can range. In-office bleaching procedure is the most expensive option considering  the most effective result it has.