Tooth development
Tooth Development
Tooth development or odontogenesis is the complex process by which teeth form from embryonic cells, grow, and erupt into the mouth. For human teeth to have a healthy oral environment, all parts of the tooth must develop during appropriate stages of fetal development. Primary (baby) teeth start to form between the sixth and eighth week of prenatal development, and permanent teeth begin to form in the twentieth week.
Pronunciation
- Tooth Development: /tuːθ dɪˌvɛləpˈmɛnt/
- Odontogenesis: /ˌoʊdɒntoʊˈdʒɛnɪsɪs/
Etymology
The term "odontogenesis" is derived from the Greek words "odontos" meaning tooth and "genesis" meaning origin or formation.
Stages of Tooth Development
Tooth development is generally divided into the following stages: the bud stage, the cap stage, the bell stage, and finally the crown stage.
Bud Stage
The bud stage, also known as the initiation stage, is the stage during which the tooth begins to form. It is characterized by the formation of a tooth bud, a small swelling in the dental lamina.
Cap Stage
The cap stage, also known as the proliferation stage, is the stage during which the tooth bud develops into a tooth cap. This stage is characterized by the proliferation of cells at the site of the tooth bud.
Bell Stage
The bell stage, also known as the histodifferentiation stage, is the stage during which the tooth cap develops into a tooth bell. This stage is characterized by the differentiation of cells into different types of dental tissues.
Crown Stage
The crown stage, also known as the morphodifferentiation stage, is the stage during which the tooth bell develops into a tooth crown. This stage is characterized by the formation of the tooth's crown and the completion of the tooth's basic structure.
Related Terms
External links
- Medical encyclopedia article on Tooth development
- Wikipedia's article - Tooth development
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