Tooth development

Odontogenesis

The development of teeth.

MesenCHYME

The embryonic connective tissue from which the dental papilla develops.

Stomodaeum

The primitive oral cavity lined with ectoderm during the 6th week of development.

Primary epithelial bands

Horseshoe-shaped bands that give rise to the dental lamina and vestibular lamina.

Dental lamina

A structure that grows deep into the mesenchyme, representing future sites for deciduous teeth.

Vestibular lamina

A structure that forms a cleft and becomes the vestibule of the oral cavity.

Bud stage

The first developmental stage of tooth formation.

Cap stage

The second developmental stage of tooth formation, characterized by cap-shaped tissue.

Bell stage

The third developmental stage where the cap shape becomes bell-like and cellular differentiation occurs.

Appositional stage

The stage in development where enamel, dentin, and cementum are secreted.

Eruption

The process by which a tooth emerges from the gum.

Mixed dentition period

The period in development that includes both primary and permanent teeth.

Enamel organ

The structure that contains cells responsible for enamel formation.

Dental papilla

Tissue that develops into pulpal and dentin tissues.

Dental sac

The structure surrounding the tooth bud that contributes to the periodontal ligament.

Morphodifferentiation

The process of forming the shape of the tooth.

Histodifferentiation

The differentiation of cells into specific types of tissues.

Ameloblasts

Cells that differentiate from the inner enamel epithelium to form enamel.

Odontoblasts

Cells that form dentin from the outer cells of the dental papilla.

Dentinogenesis

The process of dentin formation.

DEJ (Dentinoenamel junction)

The junction between dentin and enamel.

Cervical loop

The structure that initiates root formation.

Hertwig’s epithelial root sheath

The structure responsible for shaping the root of the tooth.

Cementum

A mineralized tissue covering the roots of teeth.

Periodontal ligament

The connective tissue that connects the tooth to the surrounding alveolar bone.

Epithelial rests of Malassez

Islands of epithelial cells that arise from the disintegration of Hertwig's root sheath.

Cementoblasts

Cells that are responsible for cementum formation.

Dentinocemental junction

The area where cementum and dentin meet.

Patterning of the dentition

The determination of specific tooth types and their positions in the jaws.

Homodont

Animals with teeth of the same shape.

Heterodont

Mammals with different types of teeth.

Incisiform

Teeth resembling incisors.

Caniniform

Teeth resembling canines.

Molariform

Teeth resembling molars.

Clone model

A hypothetical model explaining how different tooth shapes are determined.

Field model

A hypothetical model based on homeobox gene expression patterns in jaw development.

Dental pulp stem cells (DPSC)

Stem cells found in the dental pulp.

Periodontal ligament stem cells (PDLSC)

Stem cells found in the periodontal ligament.

Stem cells from apical papilla (SCAP)

Stem cells found in the apical papilla of developing teeth.

Dental follicle stem cells (DFSC)

Stem cells found in the dental follicle.

Stem cell from exfoliated deciduous teeth (SHED)

Stem cells derived from dislodged primary teeth.

Cementogenesis

The development and formation of cementum.