5. Introduction
Definition: The hardest mineralized tissue which
covers the dentin in the crown portion of the tooth
is called enamel.
Physical & Chemical Properties
Living or non-living
Thickness 2-2.5 mm
Brittleness
Permeability
Color
Translucency
Radio-opaque
15. Developmental Defects
A. Hereditary Disturbances in the Structure of
Enamel
* Amelogenesis imperfecta
B. Acquired Disturbances in the Structure of
Enamel
* Focal enamel hypoplasia
* Generalized enamel hypoplasia
16. Amelogenesis Imperfecta
Stages of
Development of
Enamel
1. Enamel matrix formation
2. Calcification
3. Maturation
Types of
Amelogenesis
Imperfecta
1. Hypoplastic type
2. Hypocalcified type
3. Hypomaturation type