Tooth Whitening

 

WHAT IS TOOTH WHITENING (BLEACHING)?

Tooth Whitening is a common procedure in dentistry. Children have whiter teeth then adult because of different mineral structure. And as the person grow the teeth become darker because of changes in the mineral structure with time. To get these teeth brighter and whiter Tooth Whitening is the one of the best option available.


TYPES OF TOOTH WHITENING

 

External Tooth Whitening:
In this technique Tooth Whitening is done from outside the tooth. External Tooth Whitening includes,
1) Office bleach
2) Home bleach.

1) Office bleach:
In office bleach, a dentist applies tooth whitening solution on teeth. Then focuses LED light on the teeth. Depending upon the stains the tooth has, further sitting can be planned. This is the safest and most preferred way of tooth whitening.

2) Home bleach:
In home bleach technique a special tray is made and Patient has to wear the tray according to the instruction given by the dentist. Patient needs to apply the bleaching agent in the tray and wear it .Lighter stains can be effectively removed by this method, but in case of heavier stains this method is less effective.

 

 

Internal Tooth Whitening:
Internal Tooth Whitening procedures are performed on nonvital tooth that have undergone endodontic therapy ("Root Canal") and are discolored due to internal staining of the tooth structure by blood and other fluids that leached in. Internal Tooth Whitening brightens teeth from the inside out. Whitening the tooth internally involves Root canal treatment, and placing a peroxide gel into the pulp chamber so that the gel can work directly inside the tooth on the dentin layer. In this variation of whitening the peroxide is sealed within the tooth over a period of some days and replaced as needed. This technique of Tooth Whitening is also called"Walking Bleach Technique".


Post Operative sequences:
1) Hyper sensitive teeth: Tooth Whitening dehydrates the tooth leading to a hyper sensitivity.

2) If proper care is not taken it may lead to chemical burn out of gums and mucous membrane of oral cavity.

3) Over Tooth Whitening may cause loss of enamel structure.

4) Aggressive Tooth Whitening procedure may cause inflammation of the pulp leading to a severe dental pain.

HOW TOOTH WHITENING IS DONE?

In-office Tooth Whitening systems use a gel made with a 35% solution of hydrogen peroxide. The hydrogen peroxide gel is much stronger than the carbamide peroxide solutions used in take-home systems. It must be applied by the dentist only, because of the potential harm it could do to other oral tissues surrounding the teeth, if not done properly. These strong hydrogen peroxide solutions offer very effective tooth whitening in about two hours on their own, however most dentists speed up the process by using a heat or light source to liberate more oxygen from the gel faster than would happen without the light or heat source.

WHEN IS TOOTH WHITENING INDICATED?

Tooth Whitening is basically preferred to improve a smile, to make teeth bright and to remove the stains from the tooth. The indications for tooth whitening include….
1) Stains of bacterial pigments on the tooth.

2) Stains of pan-masala, tobacco, betel nut on tooth.

3) Tetracycline Given to the mother at the time of pregnancy can cause internal stains on teeth during tooth bud developments.

4) Fluoride stains as specially in areas where fluoride content in water is higher than normal.

5) If tooth is non-vital or dead it may become black or brown over a period of time.

6) Stain from smoking can be removed with Tooth Whitening.

7) Excessive use of food color can stain the tooth; these stains also can be removed with tooth whitening.

8) Long standing Amalgam filling can cause the tattooing of the tooth,which can be treated by bleaching.

WHAT ARE THE LIMITATIONS OF TOOTH WHITENING?

Effects of Tooth Whitening may vary from person to person . There are situations where Tooth Whitening should be avoided; which include.

1) Age: Below the age of 16 Tooth Whitening must not be attempted as the pulp horns of the teeth are high.

2) Patient with allergy to hydrogen peroxide are not good candidates of Tooth Whitening.

3) Tooth Whitening is not recommended in pregnant or lactating woman.

WHAT ARE THE ADVANTAGES OF TOOTH WHITENING?


  • Boosts your confidence.
  • Enhances your personality.
  • Painless procedure.
  • Can be performed in a single sitting.
  • Can also be done at home .

      

Dr. Arvind Agarwal
Oral Maxilofacial surgeon

15 Years of practice

- Professor and Head of the Department (Nootan Dental College & Hospital, Visnagar)

- Member of IDA, AOMSI, DPS, IALD, ISOI

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Dr. Shalini Agarwal
Periodontist

15 Years of practice

- Professor , Department of Periodontics , Faculty of Dental Science, DDIT Nadiad.

- Member of IDA, ISP, DPS, Periodontal Study Group

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