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Cervical column morphology in patients with skeletal open bite.

L Sonnesen¹, I Kjaer

¹Department of Orthodontics, School of Dentistry, Copenhagen University, Copenhagen, Denmark. lls@odont.ku.dk

Orthodontics & Craniofacial Research

|January 18, 2008

Summary

Adults with skeletal open bite show more cervical column deviations, including fusions and posterior arch deficiency. Maxillary retrognathia is a key factor associated with these cervical spine anomalies.

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Area of Science:

Orthodontics
Craniofacial Morphology
Cervical Spine Anatomy

Background:

Skeletal open bite is a complex malocclusion.
Cervical column morphology can influence craniofacial development.
Understanding these relationships is crucial for diagnosis.

Purpose of the Study:

To compare cervical column morphology in adult skeletal open bite patients versus a control group.
To identify associations between cervical spine anomalies and craniofacial characteristics in open bite cases.

Main Methods:

Retrospective case-control study design.
Analysis of profile radiographs from 38 open bite patients and 21 controls.
Visual assessment of cervical column and angular measurements of craniofacial dimensions.

Main Results:

42.1% of open bite patients exhibited cervical column body fusion (C2-C3), and 13.2% had posterior arch deficiency.
Cervical column deviations were significantly more frequent in the open bite group (p < 0.05).
Maxillary retrognathia was strongly associated with cervical column fusions and posterior arch deficiency (p < 0.01).

Conclusions:

New associations between skeletal open bite and cervical column deviations are identified.
Maxillary retrognathia is a significant predictor of cervical spine anomalies in open bite patients.
Findings should inform orthodontic treatment planning and diagnostics.