What is the cleft lip classification system devised by American Cleft Palate Association?

American Cleft Palate Association (ACPA) Cleft Lip Classification System

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Group I - Unilateral Cleft Lip:

- Group IA: Complete Unilateral Cleft Lip (without involvement of the floor of the nose or alveolar ridge).

- Group IB: Incomplete Unilateral Cleft Lip (involves the floor of the nose but not alveolar ridge).

- Group IC: Unilateral Cleft Lip and Alveolus (unilateral cleft of the primary and secondary palate).

Group II - Bilateral Cleft Lip:

- Group IIA: Incomplete Bilateral Cleft Lip (without floor of nose involvement).

- Group IIB: Complete Bilateral Cleft Lip (floor of the nose between two clefts).

Group III - Median Cleft Lip:

- Group IIIA: Median Cleft Lip (primary palate)

- Group IIIB: Median Cleft Lip and Maxilla (median cleft lip with bony separation of the premaxilla).