Dental and Medical Problems

Dent Med Probl
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ISSN 1644-387X (print)
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Dental and Medical Problems

2019, vol. 56, nr 2, April-June, p. 191–196

doi: 10.17219/dmp/105957

Publication type: review article

Language: English

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Creative Commons BY-NC-ND 3.0 Open Access

The effects of the headgear therapy on the airway dimensions in patients with class II malocclusion: A systematic review

Wpływ aparatu headgear na wymiary drogi oddechowej pacjentów z wadą zgryzu klasy II – systematyczny przegląd piśmiennictwa

Mojgan Shavakhi1,B,C, Fatemeh Mohamadian2,C,D, Hooman Zarif Najafi1,E,F

1 School of Dentistry, Shiraz University of Medical Sciences, Iran

2 School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran


Class II malocclusion may be caused by the maxillary protrusion or the mandibular retrusion. One treatment method is to use a headgear, which might affect the dimensions of the patient’s airway. The aim of this study was to assess the effect of a headgear on the airway dimensions in class II malocclusion patients. A digital search and a manual search were conducted for English-language articles published from January 2000 to December 2018 about human clinical trials, including the usage of a cervical headgear in class II malocclusion patients who had measurable changes in the airway and/or jaw size. The synthesis methods of the study consisted of data concerning the study design, the type of treatment device, the patient’s age at the start, the sample size, the treatment duration, the type of radiography, and the results of treatment; this data was extracted and compared. The quality of the selected articles was assessed. All of the studies had a high risk of bias, providing low-quality evidence of the effectiveness of the headgear therapy on the airway dimensions. The conclusions of the articles differed from each other and there were different mechanisms of changes in the jaw or airway dimensions. Therefore, further studies are required to find the clearest results showing the effect of a cervical headgear in class II malocclusion.

Key words

headgear, airway dimensions, class II malocclusion

Słowa kluczowe

headgear, wymiary drogi oddechowej, wada zgryzu klasy II

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