Clinical Effectiveness of Non-extraction Clear Aligner Therapy in Patients with Class Ⅱ Division 1 Malocclusion

doi:10.13701/j.cnki.kqyxyj.2022.08.010

Journal of Oral Science Research ›› 2022, Vol. 38 ›› Issue (8): 747-751.DOI: 10.13701/j.cnki.kqyxyj.2022.08.010

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Clinical Effectiveness of Non-extraction Clear Aligner Therapy in Patients with Class Ⅱ Division 1 Malocclusion

GUO Renming¹, DONG Haoxin¹, LI Yibo², LIU Panming¹, LI Zhengze¹, CUI Shuxia^1*

1. Department of Orthodontics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China;
2. Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China

Received:2021-11-04 Online:2022-08-28 Published:2022-08-24

Abstract

Abstract: Objective: To evaluate the clinical effectiveness of non-extraction Clear Aligner therapy in patients with Class Ⅱ division 1 malocclusion. Methods: From January 2016 to January 2021, 34 patients who received non-extraction Clear Aligner therapy and with Class Ⅱ division 1 malocclusion in the First Affiliated Hospital of Zhengzhou University were selected. Based on American Board of Orthodontics Objective Grading System, the orthodontic outcomes were evaluated. The lateral cephalograms were measured and analyzed. Results: Based on American Board of Orthodontics Objective Grading System, the passing rate was 55.88% and the possible passing rate was 97.06%. There were statistically significant decreases in U6-PP(mm) and U1-PP(°) after the treatment (P<0.05). There was no statistical difference in measurements of SN-MP, SN-OP, S-Go/N-Me, and SN-PP (P>0.05). Conclusion: Non-extraction Clear Aligner therapy in patients with average-angle Class Ⅱ division 1 malocclusion could receive satisfactory results.

Key words: Clear Aligners, class Ⅱ division 1 malocclusion, non-extraction treatment

GUO Renming, DONG Haoxin, LI Yibo, LIU Panming, LI Zhengze, CUI Shuxia. Clinical Effectiveness of Non-extraction Clear Aligner Therapy in Patients with Class Ⅱ Division 1 Malocclusion[J]. Journal of Oral Science Research, 2022, 38(8): 747-751.

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Clinical Effectiveness of Non-extraction Clear Aligner Therapy in Patients with Class Ⅱ Division 1 Malocclusion

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