Table 2.

Comparisons among systems for their ability to classify varying degrees of severity of unilateral clefts of the lip.

¹Does not distinguish between complete and incomplete clefts unless considering the rest of the primary palate.

²Simon's band to be indicated with cross-hatching on the “Y” diagram.

³Total cleft when the cleft reaches the alveolus.

⁴Clefts up to 1/4,1/2, and 3/4 of the lip are grouped as incomplete clefts.

⁵A complete cleft with a Simon's band is included in the same category as a complete cleft without a Simon's band.

⁶Simon's band included in the same category as a > 1/2 cleft lip.

⁷Simon's band categorized separately from incomplete and complete cleft lips.