oral histology exam 2

Odontogenesis

The process of tooth development from initiation to maturation

Initiation, Proliferation, Morphogenesis, Cytodifferentiation, Apposition, and Maturation.

Tooth Development Stages

Enamel organ

A cap-like structure formed during the cap stage that contributes to enamel formation.

Dental papilla

Condensed ECTOMESENCHYME that forms during the cap stage, contributing to the formation of DENTIN and PULP.

Dental follicle

ECTOMESENCHYME surrounding the dental papilla that contributes to the formation of the periodontal ligament and cementum.

Cap Stage

phase in tooth development where the enamel organ, dental papilla, and dental follicle are formed.

Enamel Knot

A signaling center that regulates the growth and shape of the tooth during development.

Tooth agenesis

A condition where one or more teeth fail to develop due to genetic mutations.

BMP signaling

Bone Morphogenetic Protein signaling involved in regulating dental development, including the apoptosis of enamel knots.

Cervical loop

area where the inner and outer enamel epithelium meet, allowing for ongoing enamel production and root development

dental lamina breaks up, downward proliferation of cervical loop, differntial growth of IEE (inner enamel epithelium)

what occurs during bell stage

bell stage

stage of tooth development characterized by the differentiation of the inner enamel epithelium into ameloblasts and the outer enamel epithelium into odontoblasts.

Hyperdontia

A condition characterized by the presence of supernumerary teeth, mutations in signaling molecules (Wnt, FGF, Shh) BEFORE BUD stage

Hypodontia

A condition resulting in a reduced number of teeth due to developmental issues.

Oral epithelium

The epithelial layer involved in initiating the formation and development of teeth.

dentin

what does the ectomesynchyme form during odontogenesis

enamel

what does oral ectoderm for during odontogenesis

directs epithelium to form specific tooth

role of MESENCHYME in CAP and BELL stages

initiate tooth formation in mesenchyme

role of EPITHELIUM BEFORE bud stage