İçerik Haritası
he formation and development stages of teeth are as follows:
Teeth begin their development inside the womb and continue to develop after birth. Dentin forms the core structure of a tooth. Dentin is covered by enamel on the crown part and by cementum on the root part.
Dentin is a living structure and consists of 70% mineral salts, 20% organic matter, and 10% water.
How many parts does a tooth have?
Firstly, a tooth is divided into two parts: the crown and the root. In the crown, you find the enamel, dentin, and the border with cementum, while in the root, it consists of dentin and cementum layers. The crown is the only visible part of the tooth within the mouth, forming the upper portion of the tooth.
The Embryological and Postnatal Development of Teeth
In the first paragraph, we saw the formation of teeth. Around the 6th week of life, areas where the basal layer of the oral epithelium of the fetus becomes more mobile are revealed, and growth occurs in areas where dental arches will develop in the future. This increase and expansion enable the formation of the dental lamina, where the future tooth germs will develop.
During the 3rd week of intrauterine life, the stomodeum (primitive mouth) forms. The beginning of tooth development corresponds to the 6th week of embryonic life.
With birth, just like in the entire body, growth and development continue in the tissues inside the mouth. Teeth that complete their development process within the gum tissue begin to move towards the gum surface between the 4th and 7th months. Initially, the lower front incisors start to emerge in the lower jaw.
Stages of Tooth Development
- Initial stage (6th-7th weeks)
- Bud stage (8th week)
- Cap stage (9th-10th weeks)
- Bell stage (11th-12th weeks)
- Apposition stage (varies for each tooth)
- Maturation stage (varies for each tooth)
It should be noted that tooth development is a continuous, complex, and biological process. It is not possible to make a precise distinction between developmental stages.