1)INTRODUCTION
● Occour due to complex inheritance pattern.
● Structural defect of tooth enamel.
● It may be differentiated into 3 groups,
i)Hypoplastic
ii)Hypocalcified
iii)Hypomaturation. “PCM”.
Hypocalcification occours in 7%population
Hypomaturation occours in 20-40%population
Hypoplasti occours in 60-70%population.
2) ETIOLOGY
Most of the cases occurs due to marriage between close relatives.
3)ORAL MANIFESTATION.
Amilo genesis in perfectum associated with other anomalies like
● Crown resorption
● Root resorption
● Pulpal calcification
● Taurodontism
● Cementum deposition
● Open bite.