Stomatology ›› 2023, Vol. 43 ›› Issue (4): 317-321.doi: 10.13591/j.cnki.kqyx.2023.04.006

• Clinical Research • Previous Articles     Next Articles

Differences in efficacy between orthodontic-first and surgery-first models for skeletal Class Ⅲ patients

CAI Guanhui1,GUAN Zhaolan1,LI Gen1,WANG Hua1,ZHANG Weibing1,2()   

  1. Department of Orthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, China
  • Revised:2023-01-13 Online:2023-04-28 Published:2023-05-08
  • Contact: ZHANG Weibing E-mail:wbzhang@suda.edu.cn

Abstract:

Objective To compare the impact between a surgery-first strategy and an orthodontics-first approach on the result and course of therapy in patients with skeletal Class Ⅲ malocclusion. Methods The sample consisted of 24 patients with severe skeletal Class Ⅲ malocclusion, who needed orthognathic surgery. Eleven patients were treated with the surgery-first approach, and 13 patients were treated with the traditional orthodontic-surgical approach. Dolphin Imaging software was used to perform cephalometric analysis on the cone beam computed tomography(CBCT)data that were collected before and after treatment. Results In skeletal Class Ⅲ patients, the overjet and soft-tissue profile were successfully normalized in both of the two groups at high rates. Before and after the treatment, there was no statistically significant difference in indexes between the two groups(P>0.05). In terms of soft and hard tissue changes before and after treatment, there was a statistically significant difference between the orthodontic-first group and the surgery-first group(P<0.05). In addition, the overall treatment duration was much shorter in the surgery-first group((18.86±3.61) months) than in the orthodontic-first group((27.15±5.16)months), with a statistical difference(P<0.001). Conclusion There is no statistically significant difference in soft and hard tissue changes between the surgery-first group and the orthodontic-first group, but there is a significant difference in treatment duration between two groups.

Key words: skeletal Class Ⅲ malocclusion, surgery-first approach, orthodontic-surgical approach

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