Tooth Development

Initiation Stage

Begins around the 6th week of embryonic development involving the interaction between the ectoderm and mesenchyme, leading to the formation of the dental lamina.

Bud Stage

Occurs around the 8th week of embryonic development characterized by the proliferation of the dental lamina into bud-like structures that will form teeth.

Cap Stage

Begins around the 9th to 10th week of embryonic development, where the tooth bud grows into a cap-like structure and key structures like the enamel organ, dental papilla, and dental sac form.

Bell Stage

Occurs around the 11th to 12th week of embryonic development, characterized by cellular differentiation within the enamel organ, producing ameloblasts, odontoblasts, cementoblasts, and fibroblasts.

Apposition Stage

In this stage, hard tissues (enamel, dentin, cementum) are secreted in layers, and calcification of these matrixes occurs.

Maturation Stage

The final stage of tooth development, involving complete calcification of the hard tissues.

Dental Lamina

A band of epithelial cells that forms during the initiation stage of tooth development.

Enamel Organ

Structure that forms the enamel of the tooth during the cap stage.

Odontoblasts

Cells that form dentin during the bell stage.

Ameloblasts

Cells that form enamel during the bell stage.