Cleft lip
is malformation of upper lip without or with cleft palate
it may be unilateral or bilateral & it is more common in males
the cleft varies from a small notch to complete vivision of the lip & alveolar part of the maxilla
couses
a) gene abnormalities or chromosomal abnormalities such as Pateau Syndrome
b) drugs: Barbiturates , Diazepam , sulphonamide & NSAIDs like indomethacine
[align=left]c)vitamin-A deficiency[/align]



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