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Odontogenesis

Dental Anatomy

QuestionAnswer
What are the 5 phases of odontogenesis? 1. Induction/Initiation 2. Proliferation 3. Morphodifferentiation 4. Histodifferentiation 5. Apposition/Maturation
What are the 4 stages of development? 1. Bud 2. Cap 3. Bell 4. Crown
What are two phenomena that occur in the cap stage? 1. The initiation of the permanent tooth dental lamina (secondary dental lamina) begins lingual to the developing primary tooth. 2. The formation of the tooth germ occurs.
Name the 3 parts of the tooth germ. 1. Enamel Organ (derived from ectoderm) 2. Dental Papilla (derived from ectomesenchyme) 3. Dental Sac (derived from ectomesenchyme)
What are the 5 layers of the enamel organ? 1. Basement Membrane 2. Inner Enamel Epithelium 3. Stratum Intermedium 4. Stellate Reticulum 5. Outer Enamel Epithelium
What are Glands or Pearls of Serres? Residual dental lamina cells. They have the ability to form odontogenic cysts in later life.
Contact between the dental sac cells and the dentinal cells causes the dental sac cells to differentiate into what kinds of cells? Fibroblasts- form PDL Cementoblasts- form cementum Osteoblasts- form alveolar bone
What are Rests of Malassez? Any remnant cells of Hertwig's Root Sheath caught within the PDL. They have the ability to form odontogenic cysts later in life.
Created by: 27221056