I've done a lot of work and want to share my experience and knowledge.
Tooth whitening (used interchangeably with tooth bleaching most times) involves either attempting to whiten the teeth better than it was before or to restore the teeth back to its natural colour. It simply means bleaching the teeth so it becomes lighter
There are various things that cause stains in the teeth over time. These are stains caused by our personal eating and drinking habits, they are referred to as extrinsic factors e.g. drinking alcohol, red wine, beverages like tea, coffee, smoking and tobacco use, spicy foods and other foods like chocolate, ketchup etc., all have a way of affecting the teeth color adversely. Tartar and calculus can also accumulate and darken the teeth over time
The natural color or shade of the teeth can be restored by simply removing these extrinsic stains either through improved oral hygiene at home or by polishing the teeth which is done by a dentist. Various whitening products can be gotten from a dentist like trays, over the counter gels, whitening toothpastes etc.
How the teeth is whitened
The dentist uses a whitening to improve the coloration of the teeth without changing the structure whatsoever. A light source aids and accelerates the ions in the gel producing faster results, when used properly, the results are dramatic. Actual results may vary, but usually an improvement of three to eight shades will be achieved.
Note that whitening treatment cannot be performed on a customer that is pregnant or nursing, allergic to silicone or peroxide, or has untreated oral issues.
The patient is handed a self-adhesive bib and a fingertip brush up to use, the blue side which is the rough side is used to clean the teeth in order for best adhesion of the gel. While brushing it is important to brush only the teeth and to be careful not to irritate the gums.
The dentist uses the shade guide to match the color of the patient’s teeth to a color on the shade guide. The tip of the vitamin E swab is removed which is marked with a red line, holding it upright so that the liquid does not pour out. The swab is then handed to the client and they’re made to run the swab along their gum line and lips for protection.
If using the silicone impression mouthpiece, the patient slowly but firmly bites into the silicon to get a good impression, the patient is urged to slightly rock the impression back and forth to create just a little space for the gel. After that, the impression is removed from the mouth into a tray once the impression has been made.
Using the syringe, the dentist places a small amount of the whitening gel into the front of the impression, on the top and the bottom of the tray. It is important that there is enough gel to surround each tooth but not so much that the gums are needlessly exposed to the whitening agent. The tray is then placed into the patient’s mouth.
The L.E.D timer is set to the desired length of time, the L.E.D light is turned on and adjusted to approximately one to two inches from the patient’s mouth. When the time has expired, the LED light is removed and the mouth tray is also removed and placed into the bowl.
The dentist then gives the patient a cup of water to swish and spit it into a cup or a sink if available. The patient is handed another brush up to remove any residual gel that must’ve been left behind. After this the procedure is complete and patient is advised to refrain from drinking coffee tea or red wine for at least 24 hours. The rule of thumb is that anything that will stain a white shirt will definitely stain the teeth.