Types of stains
Extrinsic- cause is due to outside factors like consumption of staining substances such as coffee, tea, wine,colas, tobacco, etc over a period of time
These factors are more responsive to whitening.
1 Intrinsic- these are internal and are more resistant to bleaching.
2 drug stains
3 certain antibiotics like tetracycline
4 excessive flouride
1 Home Bleaching Kit
This is done by the patient following instructions given by the dentist to dispense bleaching gel into customized trays that fit the patient's teeth. Follow-up required to check on shade improvement.
2 Chair-side bleaching
As a stronger bleaching gel is used, the process is done at the chair with full supervision to ensure optimum results. Teeth and gums are well isolated, gel is dispensed and activated under special light. Usually, the result is immediate but may vary in degree of whitening effect.
The patient should moderate on the consumption of colored beverages or at least rinse off with water. A home bleaching routine can be embarked after sometime to prevent shade reversal. A whitening toothpaste also helps to maintain the color of the teeth.
Effects of Bleaching
Some sensitivity may occur and this can be managed using desensitizing gel or patients have to stop the protocol if unbearable and inform the dentist.
Before whitening, any exposed roots should be filled if abraded or protected during the bleaching procedure to minimize sensitivity.