Abstract: Objective To analyze the facial changes and the esthetic scores among different groups of evaluators in patients with skeletal class Ⅲ malocclusion before and after orthodontic orthognathic surgical treatment. Methods The study includes forty-five patients with skeletal class III malocclusion who accepted orthodontic orthognathic treatment.37 p ersons were selected by using visual analogy score (VAS) method to score these patients’ frontal and 90-degree-right profile photos of pre and postsurgical orthodontic treatment. Cone Bean CTs(CBCT) were taken before and after treatment. The lateral cephalometric radiographs were rebuilt by Dolphin imaging 11.0 and measured with Holdaway analytical method. Results Patients’VAS scores were greatly improved after orthodontic orthognathic treatment (p < 0.05). There were significant differences between orthodontists and layperson (p < 0.05). Part of values of Holdaway analytical method were different before and after treatment. Conclusion Orthodontic orthognathic treatment can greatly improve the frontal and lateral faces of patients with skeletal class III malocclusion. Orthodontists' aesthetic scores in these patients are generally lower than layperson.

Key words: Orthodontic orthognathic treatment, Skeletal class Ⅲ, Facial soft tissue, VAS