Dental-Care Tooth whitening has been carried out in various forms over the centuries. The staining of teeth can be caused by a variety of factors, including tobacco and staining foods and drinks such as red wine or tea. There are several different methods which are available to those who are looking to give their teeth a whiter and lighter effect. Bleaching kits are available in either over-the-counter (OCC) kits for you to use at home, or in the form of treatments which can be carried out by your dental practitioner. During the process, the chemicals either carbamide peroxide or hydrogen peroxide- break down, causing oxygen to penetrate the enamel of the tooth and lightening its appearance. At-home bleaching trays were introduced by Haywood and Haymann in 1989 and quickly gained popularity as one of the methods people could use to achieve a teeth whitening Preston effect at home. During the nineties, argon lasers were approved for teeth whitening treatment and began to be used by dental professionals and cosmetic dentists. Laser teeth whitening Preston works by applying a special gel to the teeth which is then activated by a laser. Zoom teeth whitening treatments work in a similar way, except that a zoom heat lamp is used to activate the gel. Teeth discolouration is a natural part of aging. This process is often speeded up by consuming food and drink which can stain the teeth such as red wine, or smoking. Further contributors to tooth staining include tartar build-up, tooth decay or fillings, but there are other, more unusual causes as well. If the blood vessels or the nerves become damaged either by a knock or through decay, for example, this can make the tooth appear darker. Certain types of medication can also cause tooth staining. There are alternatives to teeth whitening Prestonavailable, such as cutting down on staining food and drink, smoking cessation, following a good dental hygiene routine and getting teeth regularly scaled and polished to remove the build-up of tartar. Whitening toothpastes all have varying results which are currently being tested by experts, but they do not necessarily whiten the teeth. Instead, they use abrasive substances to scrub the stains away from the tooth. This can be in the form of pumice, which is not recommended for regular use as it can cause receding gums and damage to the teeth. A milder (And better) alternative is baking soda. Veneers are thin layers of tooth coloured material normally made from porcelain, which are fitted over the discoloured tooth in order to give it a lighter appearance. Veneers can last for a long time, but care must be taken to ensure they do not become damaged through chewing hard substances such as ice or tearing adhesive tape with ones teeth. As well as external bleaching, internal bleaching is also used. This procedure can only be performed on teeth which have undergone a successful root treatment. Here the dentist drills a hole in the tooth (As the tooth has no nerve this is usually painless) before being filled with a bleaching solution, with a temporary filling added. After a week, the patient must return to have the filling removed. If the patient is satisfied with the colour, the tooth will be filled with a tooth-coloured filling. About the Author: 相关的主题文章:

 

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