ORAL outcome 4

odontogenesis

process of tooth development

primary teeth begin in the

5th week of embryonic development

by the ___ week, all primary teeth are developed

17th week

permanent teeth begin in week __ of the fetal period and continues until the late teens

10th

germ layers

third to fourth week

formation of palate

premaxilla (primary palate) + lateral palentine process (secondary palate)

premaxilla (primary) palate

• forms between 5 to 6th week

• anterior portion of palate

• forms intermaxillary segment (medial nasal process)

lateral palantine (secondary palate)

• 6th to 12th week

• forms pax process

• hard palate

tooth tissues

• ectoderm - enamel

• mesenchyme - cementum, dentin pulp (connective tissue)

induction

process of one tissue influencing the development of another tissue

poliferation

cell number multiply

differentiation

more specialized, diffrent from one another

morphogenesis

actually developing into the tissue/structure

maturation

more developming, becoming more than what they are

stages of tooth development

initation stage (g-6)

bud stage (8th)

cap stage (9-10 weeks)

bell stage (11-12)

apposition stage

eruption stage

enamel organ - tooth germ becomes organized, develops into 4 layers

proliferation, differentiation, and morphogenesis

bell stage

bell stage layers of the enamel organ

dental sac

surrounds the developing tooth germ + provides cells that will form periodontal ligament, which in turn will produce cementum and alveolar bone proper

dental papilla

condensed ectomesenchyme located on the concave side of the enamel organ

periodontium includes

• alveolar bone

• periodontal ligament

• cementum

• gingival unit

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