Comparison Between Two Techniques to Reposition the Maxilla After le Fort 1

Comparison of Accuracy Between Novel Locating Guide Design With Pre-bent Titanium Plates and 3d Printed Intermediate Wafer to Reposition the Maxilla After le Fort 1 Osteotomy in Orthognathic Surgery

clinical and radiographic comparison between novel locating guide design with pre-bent titanium plates and 3d printed intermediate wafer to reposition the maxilla after Le Fort 1 osteotomy in orthognathic surgery (randomized controlled clinical trial)

Eligible patients will be allocated randomly into 2 equal groups with 7 patients in each group according to the method that will be used to reposition the maxilla by simple randomization using computer generated random numbers. Group 1 (Study group) will be treated with locating guides to reposition the maxilla with pre-bent plates on 3d model. Group 2 (Control group) will be treated with Intermediate wafer.

Inclusion Criteria:

• All patients requiring Le Fort I osteotomy will be selected including those suffering from skeletal malocclusion (Class II or Class III), midface hypoplasia or vertical maxillary excess.

Exclusion Criteria:

cleft lip and palate. skeletal disharmony due to trauma or severe facial asymmetry. significant medical condition.