an overlap of adjacent facial clefts.

Classifications

There are different classifications about facial clefts. Two of the most used classifications are the Tessier classification and the Van der Meulen classification. Tessier is based on the anatomical position of the cleft and Van der Meulen classification is based on the embryogenesis.

Tessier classification

In 1976 Paul Tessier published a classification on facial clefts based on the anatomical position

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