Effect of the Periosteal Flap Technique on Cleft Width and the Formation of Alveolar Ridge in Relation to the Bite Level in Surgery for Cleft Lip and Palate

Abstract

The effect of the periosteal flap technique on the width of the alveolar cleft and on the formation of the alveolar ridge in relation to the bite level was examined in 36 cases of complete unilateral cleft. Attention was paid to the time interval between periosteoplasty and palatal repair, and some of the cases were re-examined approx. a year after palatal repair. Patients with a well formed bridge between the alveolar segments displayed at least the same degree of narrowing of the cleft as those in which no formation of bone bridge was established roentgenologically. The occurrence of upward rotation at the end of the alveolar segments facing the cleft was similar in both groups. The original width of the cleft did not influence the upward rotation of the alveolar ridge, but it did influence the narrowing of the cleft.