3. PERMANENT TOOTH FORMATION
âą Between 20th utero week anf 10 months after
birth
âą Arises from dental lamina
âą Bud on the lingual aspect of deciduous tooth
4. FORMATION OF PERMANENT MOLARS
âą Between 20th week of utero(first molar) and
after 5 years of age (third moalr).
5. ROOT FORAMTION
âą Two types of roots are formed:
1. Single root formatiuon
2. Multiple root formation
12. Developing of Alveolar bone
âą Develop by the differentiation of dental follicle
cells!
13. Development Of Gingiva
âą The fusion of reduced enamel epithelium and oral epithelium at the tooth
eruption stage
âą The resulting cuff and epithelium surrounds the neck of the tooth
developing the gingiva
16. Formation Of PDL
Step 1.Organic matrix from rests of malassez
Step 2.Mineralization of the matrix
Step 3.Anchoring of periodontal ligament(bundle of fibres)