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  2. Tooth whitening - Wikipedia

    en.wikipedia.org/wiki/Tooth_whitening

    The nicotine and tar in tobacco, combined with oxygen, turns yellow and over time will absorb into the pores of enamel and stain the teeth yellow. The dark brown to black stains along the gum line of the teeth are the result of the porous nature of calculus immediately picking up the stains from nicotine and tar. Betel chewing. [12]

  3. Teeth whitening: What is it, how to do it safely and how to ...

    www.aol.com/lifestyle/teeth-whitening-100042380.html

    He advises opting for a different treatment if there are any "permanent stains or discoloration, cavities, fillings, etc., already on the part of your teeth you want to whiten." Whitening trays ...

  4. Tooth discoloration - Wikipedia

    en.wikipedia.org/wiki/Tooth_discoloration

    Teeth affected in this way are also usually more susceptible to further staining acquired throughout life. Amelogenesis imperfecta is a rare condition that affects the formation of enamel (amelogenesis). The enamel is fragile, the teeth appear yellow or brown, and surface stains build up more readily. [1]

  5. Cosmetic dentistry - Wikipedia

    en.wikipedia.org/wiki/Cosmetic_dentistry

    Whitening, or "tooth bleaching", is the most common cosmetic dental procedure.Whitening is a safe process that is effective for most patients. Multiple whitening options are available, including over the counter products such as Crest Whitestrips, as well as dentist-supervised methods such as in-office treatments or at-home treatments involving trays with a peroxide gel.

  6. Enamel microabrasion - Wikipedia

    en.wikipedia.org/wiki/Enamel_microabrasion

    The patients' age is not a limiting factor for the enamel microabrasion technique but in cases of not fully erupted teeth, it may be difficult to place rubber dam for the microabrasion process [8] Microabrasion is not indicated when discoloration is located in dentin such as in dentigenous imperfecta or tetracycline discoloration.

  7. Dental fluorosis - Wikipedia

    en.wikipedia.org/wiki/Dental_fluorosis

    Dental fluorosis is a common [2] disorder, characterized by hypocalcification of tooth enamel caused by ingestion of excessive fluoride during enamel formation. [ 3 ] [ needs update ] It appears as a range of visual changes in enamel [ 4 ] causing degrees of intrinsic tooth discoloration , and, in some cases, physical damage to the teeth.