Management of Class I malocclusion with bilateral constriction of the upper and lower arch: A case report

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Introduction: The goals of orthodontic treatment are correcting the malocclusion especially bilateral constriction of upper and lower arch, achieving good occlusion and also improve the esthetic. Case report: This case report described the treatment of class I malocclusion with bilateral arch constriction. The 33-year-old female patient presented with class I malocclusion, mesofacial, retrognathic chin, convex profile, and bilateral constriction of both arch. She was treated by pre-adjusted appliances and no teeth was extracted. The upper arch had 2 phases treatment, segmental method and continuous method to correct the constriction. After 18 months of treatment, the malocclusion was corrected with successful aesthetic improvement, class I canine and molar relationship in the left and right side, and also ideal overjet and overbite. Conclusion: Treatment for bilateral arch constriction could be corrected by pre-adjusted appliances. An accurate examination will result in a proper diagnosis and an effective and efficient treatment plan. However, expansion for bilateral arch constriction should consider the limits of expansion because excessive expansion leads to instability.

Original languageEnglish
Title of host publicationClinical Reports in Dentistry
PublisherNova Science Publishers, Inc.
Number of pages13
ISBN (Electronic)9781536173291
ISBN (Print)9781536173284
Publication statusPublished - 3 Apr 2020


  • Constriction
  • Expansion
  • Orthodontic treatment
  • Pre-adjusted


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