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Early crossbite correction: a three-dimensional evaluation.

Jasmina Primozic1, Maja Ovsenik, Stephen Richmond

  • 1Department of Dental and Jaw Orthopaedics, Medical Faculty, University of Ljubljana, Slovenia.

European Journal of Orthodontics
|May 29, 2009
PubMed
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Early orthodontic intervention for children with crossbite (CB) effectively corrects facial asymmetry and increases palatal volume. Treatment leads to improved facial development, similar to children without crossbite.

Area of Science:

  • Pediatric Dentistry
  • Orthodontics
  • Craniofacial Development

Background:

  • Crossbite (CB) affects 4-23% of young children, potentially causing mandibular and facial asymmetry.
  • Early intervention is crucial for normal occlusal and facial development.
  • Unilateral crossbite can lead to significant craniofacial alterations.

Purpose of the Study:

  • To evaluate facial asymmetry and palatal volume changes in children with unilateral crossbite (CB) versus a control group (NCB).
  • To assess the efficacy of early orthodontic treatment for crossbite in primary dentition.
  • To compare pre- and post-treatment outcomes using 3D laser scanning.

Main Methods:

  • A comparative study included 30 children with CB and 28 children with no crossbite (NCB).

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  • Children with CB received intra-oral expansion appliance treatment.
  • Three-dimensional (3D) laser scanning captured facial and dental cast data at baseline (T0) and after six months (T1).

    • Main Results:

    • Baseline CB group exhibited significantly greater facial asymmetry, particularly in the lower third, and smaller palatal volume compared to the NCB group.
    • Post-treatment (T1), no statistically significant differences in facial asymmetry or palatal volume were observed between the groups.
    • Orthodontic intervention normalized facial asymmetry and increased palatal volume in the CB group.

    Conclusions:

    • Early orthodontic treatment of crossbite in the primary dentition effectively corrects facial asymmetry, especially in the lower face.
    • Intra-oral expansion therapy significantly increases palatal volume in children with crossbite.
    • Treatment results in normalized facial and palatal dimensions, comparable to children without crossbite.