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why do we have wisdom teeth yahoo

Wisdom teeth used to serve a useful purpose, but are now considered vestigial organs. A vestige is a degenerative or imperfectly formed organ or structure having little or no utility, but in the earlier stage of development of a species performed a useful function. The reasons that wisdom teeth are now outdated are many. Until quite recently, our diet included mostly very coarse food, as well as impurities such as dirt and sand. This coarseness would abrade teeth so significantly that they would take up less space in the jaw. Permanent teeth were also frequently lost at an early age, which would create more space in the jaw. Because the diet was so coarse and hard to chew, the jaw itself would develop into a larger bone because of this constant workout. All of these factors would create more space for the wisdom teeth when they came in. The heavily processed diet of today does not produce the tooth abrasion or jaw development that we used to see.

Modern dentistry has pretty much eliminated significant loss of permanent teeth at an early age. This leaves us with too many teeth and not enough jaw. The wisdom teeth still develop as they always have, but they have no where to go. When this happens, the teeth are considered impacted, meaning that they are not in normal position and function. Besides serving no useful function, the impacted teeth will often cause damage because they cannot be cleaned properly and can collect food debris, bacteria and plaque around them. This can result in tooth decay, gum disease, infection and abscess of not only the wisdom teeth, but of the molars next door and of the surrounding gum tissue. The molars in front of the wisdom teeth are sometimes lost because of cavities and gum disease caused by the inability to clean the wisdom teeth properly.

Cyst formation and other destructive pathology are also seen around impacted wisdom teeth. If removal of the wisdom teeth is indicated, the procedure is recommended in the late teenage years, before the roots are completely formed. Surgical procedures in general are better tolerated when one is young and healthy, and the gum tissues tend to heal better and more predictably when young. Most people experience minimal disruption of their normal routines, and time off from work or school is usually minimal.
the trend now is that wisdom teeth are starting to be absent in our bodies. i m over 35 and never developed wisdom teeth. I m seeing more and more. the trend now is that wisdom teeth are starting to be absent in our bodies. i m over 35 and never developed wisdom teeth. I m seeing more and more patients with no wisdom teeth. historically, the human face is getting smaller. Look at the skulls of the early humans and compare to today s skulls.

The oral cavity is smaller. Call it genetics, or evolution, or natural selection, but I believe in a couple more generations, we will no longer have wisdom teeth. Wisdom teeth in adults usually come in around 18-25 years old. In the 1840s, the average lifespan was 45 and 2000 years ago it was 20 years old. Bacteria, predators, accidents, extremes in weather and the lack of a reliable food source meant humans led short, dirty, brutal existences. That is if they survived birth at all. Infant mortality rates ranged from 300 or 400 deaths per 1,000 live births in the 18th century, while we see only seven per 1,000 today. The fact that they are called wisdom teeth today probably meant that those that got these teeth were the older part of society and therefore wiser only because they survived. i ve never heard of the nuts and berries theory.

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