Whistle deformity evaluation after Cronin labioplasty in unilateral cleft lip and palate cases from an anthropometry aspect

Whistle deformity of the lip usually occurs after labioplasty. We compared the height of Cupid's bow on the normal side, midline, and cleft side after Cronin labioplasty in patients with unilateral cleft lip and palate (UCLP) in lip function and resting positions to determine the presence of whistle deformity. We evaluated whistle deformity according to an anthropometry scale from a profile photograph, including the height of Cupid's bow on the normal side, midline, and cleft side in 24 patients with UCLP after Cronin labioplasty, while the lips in function and resting positions. Based on statistics, the results showed significant differences (P < 0.05) in the height of Cupid's bow at midline in normal children and those with whistle deformity while the lips were at rest. On the other hand, significant differences also were found in the height of Cupid's bow on the normal and cleft sides; on the normal side, cleft side, and midline in patients with whistle deformity in lip function and resting positions; on the right and left sides in normal children in lip function and resting positions; and in normal children and those with whistle deformity in the lip function position (P > 0.05). There was no significant difference between the height of Cupid's bow on the normal and cleft sides; on the normal side, cleft side, and midline in patients with whistle deformity in lip function and resting positions; on the right and left sides in normal children in lip function and resting positions; and in normal children and those with whistle deformity in the lip function position. On the other hand, there was a significant difference between the height at midline in normal children and between normal children and those with whistle deformity while the lips were at rest.