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ORIGINAL ARTICLE
Year : 2016  |  Volume : 4  |  Issue : 1  |  Page : 8-12

Evaluation of cervical spine posture after functional therapy with twin-block appliances


Department of Orthodontics, Faculty of Dentistry, Sifa University, Izmir, Turkey

Correspondence Address:
Cahide Aglarci
Department of Orthodontics, Faculty of Dentistry, Sifa University, Mansuroglu Mahallesi 293/1 Sokak, No: 2, 35100 Bayrakli, Izmir
Turkey
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2321-3825.179739

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Objective: The aim of this study was to investigate the effect of the twin-block appliances to the cervical spine posture. Materials and Methods: Twenty-one skeletal Class II patients (11 female, 10 male; 13.31 ± 0.92) with mandibular retrusion were included in the study. Twin-block appliances with no expansion protocol were applied to all individuals. Cervical spine posture changes after treatment were evaluated by cephalograms. The differences between pre- and post-treatment measurements were evaluated by paired sample t-test. Results: No significant differences were observed after treatment, in the angle between the horizontal lines of the head (sella-nasion, anterior nasal spine-posterior nasal spine, and gonion and gnathion) and the upper and middle section of the spinal column (odontoid process tangent [OPT] and cerebral venous thrombosis [CVT]) (P > 0.05), while the increase of cervical curvature angle (OPT/CVT°) was found significant after the treatment (P = 0.009). Conclusion: A backward inclination of the middle segment of cervical column seems to be associated with the advancement of the mandible by twin-block treatment.


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