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Timing of early correction of mandibular hypoplasia in skeletal class II malocclusion: a review

  • Beibei Huo1,*,†,
  • Xiaoxia Che2,†
  • Xiaotong Li3

1Department of Dental, Beijing Zhongguancun Hospital, 100080 Beijing, China

2Department of Orthodontics, Peking University Stomatological Hospital, 100081 Beijing, China

3Department of Orthodontics, Beijing Stomatological Hospital of Capital Medical University, 100050 Beijing, China

DOI: 10.22514/jocpd.2023.077 Vol.47,Issue 6,November 2023 pp.11-20

Submitted: 13 January 2023 Accepted: 10 March 2023

Published: 03 November 2023

*Corresponding Author(s): Beibei Huo E-mail:

† These authors contributed equally.


Skeletal Class II malocclusion is a common malocclusion seen in clinics. It is characterized by maxillary protrusion and mandibular retrognathia and has a high incidence in adolescent mixed dentition and early permanent dentition. The early functional correction has achieved some clinical results in treating skeletal Class II malocclusion with mandibular hypoplasia. During treatment, the timing of correction is the key factor in determining the therapeutic effect, although it is difficult to understand. This review focuses on the timing of early correction of mandibular hypoplasia in combination with relevant assessment indicators and historical literature from four perspectives—the law of mandibular growth and development, the necessity of early treatment, the timing of early treatment, and the determination of the peak period of mandibular growth and development—to provide a theoretical reference for the timing of the treatment of clinical skeletal Class II malocclusion. This review shows that skeletal Class II mandibular growth has different characteristics in males and females. Bone growth assessment before treatment helps diagnose mandibular developmental morphology and the timing of early correction in adolescents with skeletal Class II malocclusion and hypoplasia of the mandible.


Angle class II; Mandible; Early treatment; Timing of correction; Pubertal spurt

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Beibei Huo,Xiaoxia Che,Xiaotong Li. Timing of early correction of mandibular hypoplasia in skeletal class II malocclusion: a review. Journal of Clinical Pediatric Dentistry. 2023. 47(6);11-20.


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