Normal teeth eruption
Dentition in humans includes a temporary dentition and a permanent dentition;
There are 20 temporary or deciduous teeth and they erupt between ± 6 – 10 months of age for the lower jaw (7-12 months of age for the upper jaw) and ± 30 months;
There are 28 permanent teeth (32 with wisdom teeth) and they appear between ± 6 and 13 years of age;
Girls often have a faster
dental development than boys.
The eruption of the same tooth on both sides of the dental arch can be delayed. If this delay goes beyond 6 months, talk to your dentist
Girls often have a faster
dental development than boys.
The eruption of the same tooth on both sides of the dental arch can be delayed. If this delay goes beyond 6 months, talk to your dentist
The Importance of Deciduous Teeth
1.Allow proper mastication .
2.Prevent malocclusion .
3.Guide the eruption of the permanent teeth .
4. Esthetics .
5. Phontics
To evaluate the general health disturbances
To know the age of foreign children .
In forensic dentistry ,to know the victim
Estimation of dental age (chronology of tooth development and eruption ).
The roots of the deciduous teeth are full formed after eruption, then after a while resorption of these roots starts until exfoliation of the deciduous teeth occurs ,followed by the eruption of the permanent successor teeth
Principle differences between the deciduous and permanent teeth:
1.The deciduous teeth are 20 in number while the
permanent teeth are 32 in number .
2.The deciduous teeth are smaller in all dimensions .
3.The deciduous teeth show less morphology variations
4.The enamel of the deciduous teeth is whiter and more opaque so they are whiter than the permanent teeth.
5.The enamel of the deciduous teeth is thinner(0.5-1mm);while in the permanent teeth it is (1.5-2.5mm).
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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