Introduction
The basic development of all teeth occurs in the same way and carries similarities to the development of many other epithelial appendages like glands, limbs and hair. In the embryo, cells of the epithelial dental lamina grow into the underlying mesenchymal tissue. So the enamel organ, the dental fallicle, the dental papilla and the mesenchymal tissue grow and give the final shape of the tooth.
Tooth development takes place in many stages, which occur, in a stepwise fashion for both dentitions. There are two dentitions: primary dentition and permanent dentition.
Primary (a child’s or baby’s) dentition develops during the prenatal period and consists of 20 teeth, which often erupt about six months of age and are later shed or lost.
The permanent dentition consists usually of 32 teeth, which gradually erupts at age of 6 and replaces the primary dentition at age of 12. The third molar teeth (wisdom teeth) is the last teeth erupt in the oral cavity, and usually they start to erupt at the age of 18.
Tooth development is a continuous and complex process. There is no clear-cut beginning or end point between the stages. The stages are used only to help students focus on the appearance of the developing structures.
An important amount of research is focused on determining the process, which initiates the development of tooth. It is broadly agreed that there is a factor within the tissues of the brachial arch that is necessary for teeth development. Tooth development is regulated by interactions of the epithelial and mesenchymal tissues.
Tooth development takes place in many stages, which occur, in a stepwise fashion for both dentitions. There are two dentitions: primary dentition and permanent dentition.
Primary (a child’s or baby’s) dentition develops during the prenatal period and consists of 20 teeth, which often erupt about six months of age and are later shed or lost.
The permanent dentition consists usually of 32 teeth, which gradually erupts at age of 6 and replaces the primary dentition at age of 12. The third molar teeth (wisdom teeth) is the last teeth erupt in the oral cavity, and usually they start to erupt at the age of 18.
Tooth development is a continuous and complex process. There is no clear-cut beginning or end point between the stages. The stages are used only to help students focus on the appearance of the developing structures.
An important amount of research is focused on determining the process, which initiates the development of tooth. It is broadly agreed that there is a factor within the tissues of the brachial arch that is necessary for teeth development. Tooth development is regulated by interactions of the epithelial and mesenchymal tissues.