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:: Volume 25, Issue 2 (4-2013) ::
J Iran Dent Assoc 2013, 25(2): 94-100 Back to browse issues page
Functional Therapy Effects on Airway Dimension in Mandibular
Gholam reza Eslami Amir Abadi1 , Fariba Shahri2 , Sara Ziaei Sharak * 3, Danesh Teimouri4
1- Assistant Professor, Department of Orthodontic, School of Dentistry, Shahed University, Tehran, Iran
2- Assistant Professor, Department of Orthodontic, School of Dentistry, School of Dentistry, Zahedan University of Medical Sciences. Zahedan, Iran
3- Assistant Professor, Department of Orthodontic, School of Dentistry, School of Dentistry, Zahedan University of Medical Sciences. Zahedan, Iran , ziaei@dnt.mui.ac.ir
4- Assistant Professor, Department of Prosthodontic, School of Dentistry, Zahedan University of Medical Sciences. Zahedan, Iran
Abstract:   (11455 Views)
  Background and Aim: Severe mandibular deficiency may result in reduced oropharyngeal airway (OAW) dimensions and predispose patients to respiratory dysfunctions such as obstructive sleep apnea and snoring. The aim of this study was to assess the effects of functional treatment on anteroposterior and vertical dimensions of airway in skeletal class III patients with mandibular deficiency .

  Materials and Methods : This interventional study was done on lateral cephalogerams of 25 mandibular deficient patients with average 9.9 years of age who were treated with modified activator appliance. Digitized cephalograms were traced and analyzed by ViewBox version 3,1,1,3 cephalometric software. Paired t-test was performed to evaluate pre- and post-treatment data .

  Results: Skeletal sagittal discrepancy was improved with decreasing ANB angle from 6.68 º to 4.48º and increasing SNB angle from 74.48 º to 76.78 º (p<0.001). Anterior–posterior dimensions of nasopharynx were increased from 19.64 to 21.52 mm (P=0/021) , Anterior–posterior dimensions of oropharynx increased in AW2 and AW4 (p<0/05) but in AW3 increasing from11.26 to12.27 mm was not statistical significant(p=0.091). Anterior–posterior dimensions of hypopharynx increased from 16.54 to 19.22 mm (p<0/001). Vertical dimension of airway increased from 60.73 to 64.79 mm (p<0/05) .

  Conclusion: Treatment of mandibular deficient patients with functional appliances improved mandibular position as well as airway dimensions .

 

 

Keywords: Airway remodeling, functional orthodontic appliance, mandibular advancement
Full-Text [PDF 1484 kb]   (2847 Downloads)    
Type of Study: Original | Subject: Orthodontics
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Eslami Amir Abadi G R, Shahri F, Ziaei Sharak S, Teimouri D. Functional Therapy Effects on Airway Dimension in Mandibular . J Iran Dent Assoc 2013; 25 (2) :94-100
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Volume 25, Issue 2 (4-2013) Back to browse issues page
Journal of Iranian Dental Association

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