A permanent tooth erupting in the mouth of an 11 years old child is most likely mandibular second bicuspid

During eruption of permanent teeth, alveolar bone is resorbed and deposited intermittently

The primary teeth begin to form in utero at about six weeks. Hard tissue formation occurs in all primary teeth by the 18th week in utero. 3. The permanent teeth begin to develop at approximately four months of age in utero. Maxillary and mandibular first molars begin to calcify at birth.

Dentinogenesis is the formation of dentin by odontoblasts of mesenchymal origin located at the periphery of the dental pulp

Dentinogenesis is initiated by the inductive influence of the enamel organ involving molecular signaling pathways, such as Wnt, Runx-2, and TGF-?. In the molar tooth, dentinogenesis starts at the late bell stage, and occurs in the crown as well as root regions.

Predentin, the first organic matrix secreted by odontoblasts, is composed by proteoglycans, glycoproteins, and collagens.

The primary canine is usually exfoliated between the ages of 10 and 11 years