Oropharyngeal airway dimensions after treatment with functional appliances in class II retrognathic children

2011 ◽  
Vol 38 (8) ◽  
pp. 588-594 ◽  
Author(s):  
C. RESTREPO ◽  
A. SANTAMARÍA ◽  
S. PELÁEZ ◽  
A. TAPIAS
Keyword(s):  
Class Ii ◽  
Oropharyngeal Airway ◽  
Functional Appliances ◽  
Airway Dimensions

scholarly journals Orthopedic Treatment for Class II Malocclusion with Functional Appliances and Its Effect on Upper Airways: A Systematic Review with Meta-Analysis

2020 ◽  
Vol 9 (12) ◽  
pp. 3806
Author(s):  
Darius Bidjan ◽  
Rahel Sallmann ◽  
Theodore Eliades ◽  
Spyridon N. Papageorgiou
Keyword(s):  
Systematic Review ◽  
Clinical Studies ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Orthopedic Treatment ◽  
Upper Airways ◽  
Quality Of Evidence ◽  
Functional Appliances ◽  
Airway Dimensions

Aim of this systematic review was to assess the effects of orthopedic treatment for Class II malocclusion with Functional Appliances (FAs) on the dimensions of the upper airways. Eight databases were searched up to October 2020 for randomized or nonrandomized clinical studies on FA treatment of Class II patients with untreated control groups. After duplicate study selection, data extraction, and risk of bias assessment according to Cochrane guidelines, random effects meta-analyses of mean differences (MDs) and their 95% confidence intervals (CIs) were performed, followed by subgroup/meta-regression analyses and assessment of the quality of evidence. A total of 20 nonrandomized clinical studies (4 prospective/16 retrospective) including 969 patients (47.9% male; mean age 10.9 years) were identified. Orthopedic treatment with FAs was associated with increased oropharynx volume (MD = 2356.14 mm3; 95% CI = 1276.36 to 3435.92 mm3; p < 0.001) compared to natural growth. Additionally, significant increases in nasopharynx volume, minimal constricted axial area of pharyngeal airway, and airway were seen, while removable FAs showed considerably greater effects than fixed FAs (p = 0.04). Finally, patient age and treatment duration had a significant influence in the effect of FAs on airways, as had baseline matching and sample size adequacy. Clinical evidence on orthopedic Class II treatment with FAs is associated with increased upper airway dimensions. However, the quality of evidence is very low due to methodological issues of existing studies, while the clinical relevance of increases in airway dimensions remains unclear.

scholarly journals Comparison of twin block appliance and Forsus Fatigue Resistant Device therapies on uvulo-glossopharyngeal dimensions: A retrospective study

2021 ◽  
Vol 11 ◽  
pp. 23-31
Author(s):  
Mehmet Ali Yavan ◽  
Merve Aycan ◽  
Dicle Aksoyler ◽  
Aysegul Essiz
Keyword(s):  
Retrospective Study ◽  
Class Ii ◽  
Post Treatment ◽  
Mandibular Advancement ◽  
Functional Therapy ◽  
Twin Block ◽  
Oropharyngeal Airway ◽  
Lateral Cephalograms ◽  
Functional Appliances ◽  
Forsus Fatigue Resistant Device

Objectives: The aim of this study was to compare the effects of two different functional appliances on skeletal, dental, and uvulo-glossopharyngeal dimensions. Materials and Methods: Pre- and post-treatment lateral cephalograms of 50 adolescent Class II patients with a retrognathic mandible were obtained from an archive and divided into two groups according to functional therapy. Twenty-five patients (14 females, 11 males, mean age: 13.5 ± 2.8) who were treated with Forsus Fatigue Resistant Device (FFRD) and 25 patients (17 females, eight males, mean age: 12.5 ± 0.4) who had received functional therapy through the twin block (TWB) were enrolled. Skeletal, dentoalveolar, tongue, uvula, hyoid position, and oropharyngeal airway parameters were measured using the Dolphin software, and uvulo-glossopharyngeal area measurements were performed with the AutoCAD software. Results: The TWB group exhibited remarkable mandibular advancement compared to the FFRD group (P < 0.05). Both of the treatments proclined mandibular incisors, and tongue dimensions increased significantly in both groups (P < 0.05). While the hyoid point moved forward and the oropharyngeal area increased significantly in the TWB group, no significant changes were observed in the FFRD group. The comparison of the TWB and FFRD groups with regard to uvulo-glossopharyngeal dimensions showed no significant differences between the groups (P > 0.05). Conclusion: Changes in uvulo-glossopharyngeal dimensions did not significantly vary between the two different functional therapies.

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

2015 ◽  
Vol 86 (6) ◽  
pp. 955-961 ◽  
Author(s):  
Susan Rizk ◽  
Valmy Pangrazio Kulbersh ◽  
Riyad Al-Qawasmi
Keyword(s):  
Hyoid Bone ◽  
Cervical Vertebrae ◽  
Statistical Significance ◽  
Control Sample ◽  
Class Ii ◽  
Maturation Stage ◽  
Functional Appliance ◽  
Oropharyngeal Airway ◽  
T1 And T2 ◽  
Airway Dimensions

ABSTRACT 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 ± 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.

Functional Appliances in the Treatment of Class II Malocclusion- A Review

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Aakash Shah ◽  
Purvesh Shah ◽  
Santosh Goje ◽  
Romil Shah ◽  
Bhumi Modi
Keyword(s):  
Class Ii ◽  
Class Ii Malocclusion ◽  
Functional Appliances

scholarly journals Proxy Crimps: A Transformative Solution

2021 ◽  
pp. 030157422096341
Author(s):  
Jamoy James ◽  
Payal Ostwal ◽  
Juhi Notra
Keyword(s):  
Low Cost ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Functional Appliances

The Forsus appliance is one of the most commonly used rigid fixed functional appliances in the correction of class II malocclusion. It is often seen that parts go missing with regular usage of the appliance. Replacement of the same is expensive and also requires a large inventory. An innovative low-cost and easy option for lost or broken split crimps is described in this article.

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