Jumat, 05 Agustus 2011

Wisdom teeth ; Gigi bungsu ; 智齿

Hey all,are you now 17 years old or above,open your mouth please and check your teeth...!
Look the most back teeth,are there new teeth? if yes,maybe that is molar 3,or people call wisdom tooth,but sometime people can't look it because it's burried.
and this is the information:

All of the deciduous teeth are lost-generally between ages 6 and 12 years-and are replaced by the permanent (secondary) teeth. The permanent dentition contains 32 teeth that erupt between age 6 and adulthood. The pattern resembles the deciduous dentition,with the following exceptions. The deciduous molars are replaced by the first and second premolars(bicuspids),which have two cusps and one root (upper first premolars have two roots) and are used for crushing and grinding. The permanent molars,which erupt into the mouth posterior to the premolars,do not replace any deciduous teeth and erupt as the jaw grows accommodate them-the first molars at age 6(six-year molars),and the second molars at age 12(twelve-year molars),and the third molars(wisdom teeth) after age 17 or not at all.

often the human jaw does not have enough room posterior to the second molars to accomodate the eruption of the third molars. In the case, the third molars remain embedded in the alveolar bone and are said to be impacted. They often cause pressure and pain and must be removed surgically. In some people,third molars may be dwarfed in size or may not develop at all.

from: Principles of Anatomy and physiology =)







The X-ray of lower impacted wisdom tooth











Hope this will be a good information for all of you =)

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