Evaluation of airway dimensions and changes in hyoid bone position following class II functional therapy with activator

Ulusoy, Çağrı; Bavbek, Nehir Canıgür; Tuncer, Burcu Baloş; Tuncer, Cumhur; Türköz, Çağrı; Gençtürk, Zeynep

doi:10.3109/00016357.2014.923109

Cited by 38 publications

(38 citation statements)

References 24 publications

(44 reference statements)

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“…These findings confirm the results of other studies using the Twin-block, 17,18 acrylic-splint Herbst, 19 and activator. 20 Mean A-P airway dimension decreased from T1 to T2 in controls and was accompanied by a small increase in transverse dimension. Although the experimental group had a significantly narrower A-P dimension than did controls at T1, functional appliance treatment resulted in significant widening of the airway in the transverse and A-P dimensions.…”

Section: Discussionmentioning

confidence: 99%

Changes in the oropharyngeal airway of Class II patients treated with the mandibular anterior repositioning appliance

Rizk¹,

Kulbersh

Al-Qawasmi

2015

The Angle Orthodontist

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Objective: To evaluate the effects of functional appliance treatment on the oropharyngeal airway volume, airway dimensions, and anteroposterior hyoid bone position of growing Class II patients. Materials and Methods: Twenty Class II white patients (mean age, 11.7 6 1.75 years) treated with the MARA followed by fixed appliances were matched to an untreated control sample by cervical vertebrae maturation stage at pretreatment (T1) and posttreatment (T2) time points. Cone beam computed tomography scans were taken at T1 and T2. Dolphin3D imaging software was used to determine oropharyngeal airway volume, dimensions, and anteroposterior hyoid bone position. Results: Multivariate ANOVA was used to evaluate changes between T1 and T2. Oropharyngeal airway volume, airway dimensions, and A-P position of the hyoid bone increased significantly with functional appliance treatment. SNA and ANB decreased significantly in the experimental group (P # .05). Changes in SNB and Sn-GoGn failed to reach statistical significance. Conclusions: Functional appliance therapy increases oropharyngeal airway volume, airway dimensions, and anteroposterior hyoid bone position in growing patients. (Angle Orthod. 2016;86:955-961.)

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Section: Discussionmentioning

confidence: 99%

Changes in the oropharyngeal airway of Class II patients treated with the mandibular anterior repositioning appliance

Rizk¹,

Kulbersh

Al-Qawasmi

2015

The Angle Orthodontist

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“…have concluded that functional appliances do not have clinically significant skeletal effect on the mandible,[1314] though other clinical studies proved functional appliances to be effective. [1516171819202122232425262728293031323334] Hence, it can be inferred from their study that, through functional appliance therapy, no significant change occurs in the airway dimensions.…”

Section: Introductionmentioning

confidence: 99%

Effect of functional appliances on the airway dimensions in patients with skeletal class II malocclusion: A systematic review

Kannan¹,

Sathyanarayana²,

Padmanabhan³

2017

J Orthodont Sci

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OBJECTIVES:The aim of the present systematic review was to assess the effect of functional appliances on the airway dimensions in patients with skeletal Class II malocclusion.MATERIALS AND METHODS:Articles were identified through a literature survey carried out through the following databases: (1) PUBMED, (2) Google Scholar, (3) The Cochrane Library, (4) Embase, (5) Lilac, and (6) Web of Scholars. The systematic review analyzed 12 articles comprising removable functional appliances, 3 articles with fixed functional appliances, and 2 articles having both fixed and removable functional appliances.RESULTS:Qualitative assessment was done for all the 17 studies. The effect of functional appliances in the dimensions of three airway spaces – nasopharynx, oropharynx, and hypopharynx were analyzed.CONCLUSIONS:Significant increase in the dimensions of nasopharynx and oropharynx was observed with Activator. Significant increase in the nasopharynx and hypopharynx (male patients) was observed with Bionator. Insignificant increase in the oropharynx was observed with the same. Significant increase in the oropharynx and hypopharynx was observed with Twin Block. Insignificant increase in the nasopharynx was observed with the same. Significant increase was observed only in the hypopharynx for Frankel II. Decreased or insignificant change was observed with FMA, MPA IV, and Herbst appliances.

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“…Weichgewebeaber auch Hartgewebe, wie bspw. das Zungenbein [26] -werden dadurch indirekt in ihrer Position beeinflusst. Analoge Effekte sind bei Unterkiefer-Vorverlagerungen im Rahmen monognather Dysgnathiechirurgie beschrieben worden [27][28][29].…”

Section: Diskussionunclassified

Die Bedeutung des extrathorakalen Luftraumes für die Kieferorthopädie

Hourfar

Kinzinger

Lisson

2020

Informationen aus Orthodontie & Kieferorthopädie

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ZusammenfassungDer „Extrathorakale Luftraum“ findet im klinischen Alltag des Kieferorthopäden sowohl bei der Fallplanung als auch bei der Therapie kaum Beachtung. Ziel dieses Beitrages ist es deshalb, Anatomie, Historie, unterschiedliche Definitionen, bildgebende Verfahren sowie Simulationstechniken des extrathorakalen Luftraumes darzustellen. Ohne kritische Aspekte zu vernachlässigen, werden therapeutische Maßnahmen mit möglichen Auswirkungen auf den extrathorakalen Luftraum, ausgewählte Studienergebnisse sowie interdisziplinäre Implikationen aufgezeigt, auch um die Relevanz des Themas für den Kliniker hervorzuheben.

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Evaluation of airway dimensions and changes in hyoid bone position following class II functional therapy with activator

Abstract: In growing Class 2 patients with mandibular deficiency and airway track without obstructions, functional appliance treatment provided favorable effects on nasopharyngeal and oropharyngeal area throughout the retention period.

Cited by 38 publications

References 24 publications

Changes in the oropharyngeal airway of Class II patients treated with the mandibular anterior repositioning appliance

Changes in the oropharyngeal airway of Class II patients treated with the mandibular anterior repositioning appliance

Effect of functional appliances on the airway dimensions in patients with skeletal class II malocclusion: A systematic review

Die Bedeutung des extrathorakalen Luftraumes für die Kieferorthopädie

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