Volumetric changes in pharyngeal airway in Class II division 1 patients treated with Forsus-fixed functional appliance: A three-dimensional cone-beam computed tomography study

Temani, Parul; Jain, Pradeep; Rathee, Pooja; Temani, Ruchira

doi:10.4103/0976-237x.177100

Cited by 21 publications

(13 citation statements)

References 16 publications

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“…More recent studies assessed the effects on the pharyngeal airways of several functional appliances, both fixed and removable. [20][21][22][23] The results of these studies were mostly similar to the data reported in the systematic reviews and showed that, in the three-dimensional evaluation of the pharyngeal airway, both fixed 20,21 and removable appliances 22 are effective in increasing airway dimensions, above all at the oropharyngeal level. A study that used magnetic resonance for the evaluation of the upper airways, instead, found no effects of both Twin Block and Herbst appliance.…”

Section: Introductionsupporting

confidence: 80%

Short‐term effects of the Sander bite‐jumping appliance on the pharyngeal airways in subjects with skeletal Class II malocclusion: A retrospective case‐control study

Rongo

Martina

Bucci

et al. 2020

J of Oral Rehabilitation

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Summary Background Skeletal Class II subjects present often a retruded mandible that might increase the probability of breathing disorders. Objective To evaluate the effects of functional treatment by means of the Sander bite‐jumping appliance (BJA) on the upper airways of growing subjects. Methods Thirty‐four subjects (21 males, 13 females; mean age 11.1 ± 1.2 years) with skeletal Class II malocclusion due to mandibular retrusion were treated with the Sander BJA (BJA group). The control group consisted of thirty‐four untreated subjects with skeletal Class II malocclusion (25 males, 9 females; 10.4 ± 1.2 years; CTR group). The effect of the Sander BJA appliance on the airway dimensions was evaluated by comparing lateral cephalograms recorded before (T0) and after (T1) the period of observation/treatment. Within‐ and between‐group comparisons were statistically evaluated according to the distribution of the data (P < .05). Results The oropharyngeal region (ph_pph) increased in the BJA group (1.8 ± 3.2; P = .001) but the difference respect to the CTR group was not statistically significant (0.73 ± 4.0; P = .314; P = .077). The tongue height (th) increased in the BJA group (2.8 ± 3.7; P < .001), and this increase was statistically significant respect to the CTR group (0.6 ± 4.7; P = .461; P = .038). In the BJA, the Ans_Pns_P angle showed a statistically significant decrease (−3.8 ± 7.8; P = .007) compared to the CTR group (−0.1 ± 5.4; P = .705; P = .026). Conclusions The airway dimensions increased for both control subjects and Class II patients treated with Sander BJA due to physiological growth. The Sander BJA induced a statistically significant change in the tongue and soft palate position, but the clinically relevant of these changes is questionable.

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Section: Introductionsupporting

confidence: 80%

Short‐term effects of the Sander bite‐jumping appliance on the pharyngeal airways in subjects with skeletal Class II malocclusion: A retrospective case‐control study

Rongo

Martina

Bucci

et al. 2020

J of Oral Rehabilitation

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“…Among all the studies, airway volume immediately after the treatment was compared with the pretreatment values, we conclude the effects on long-term changes could not explore the effect on long-term changes. The studies varied in the type of appliances used: Oliveira et al [39] used Herbst appliance, Temani et al [40] studied on Forsus, and Alhammadi et al [41] compared removable twin block and Forsus with the control group. All studies reported a significant improvement in the upper airway except for the Forsus group in the study by Alhammadi et al [41] in which insignificant changes were noticed.…”

Section: Discussionmentioning

confidence: 99%

Upper Airway Changes in Diverse Orthodontic Looms: A Systematic Review and Meta-Analysis

et al. 2022

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Upper airway assessment is particularly important in the daily work of orthodontists, because of its close connection with the development of craniofacial structures and with other pathologies such as Obstructive Sleep Apnea Syndrome (OSAS). Three-dimensional cone-beam computed tomography images provide a more reliable and comprehensive tool for airway assessment and volumetric measurements. However, the association between upper airway dimensions and skeletal malocclusion is unclear. Therefore, the current systematic review evaluates the effects of different surgical movements on the upper airway. Materials and Methods: Medline (PubMed, OVID Medline, and EBSCO), Cochrane Library (Cochrane Review and Trails), Web of Knowledge (social science, and conference abstracts), Embase (European studies, pharmacological literature, and conference abstracts), CINAHL (nursing and allied health), PsycInfo (psychology and psychiatry), SCOPUS (conference abstracts, and scientific web pages), and ERIC (education) databases were searched. Two authors independently performed the literature search, selection, quality assessment, and data extraction. Inclusion criteria encompassed computed tomography evaluations of the upper airway spaces with retrospective, prospective, and randomised clinical trial study designs. To grade the methodological quality of the included studies a GRADE risk of bias tool was used. Results and conclusion: In total, 29 studies were included. Among these, 17 studies had a low risk of bias, whereas 10 studies had a moderate risk of bias. A meta-analysis was performed with the mean differences using a fixed-effects model. Heterogeneity was assessed with the Q-test and the I2 index. The meta-analysis revealed significant (p ≤ 0.001, 95% confidence interval) increases in upper airway volume after rapid maxillary expansion and surgical advancement for the correction of Class II.

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“…Meta-analysis by Xiang et al [20] concluded that functional appliance do produce positive changes especially in oropharyngeal region (PAS) by anterior bodily translation of mandible rather than influencing the growth of mandible. To explain the effects of FFA on airway more precisely Temani et al [21] evaluated the volumetric changes following fixed functional treatment in skeletal Class II case. Study concluded that there was a definite increase in pharyngeal airway space especially in the oropharynx which may prevent developing OSA.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Airway Volume and Area in Skeletal Class II Patients Treated with Forsus FRD Using 3D Acoustic Pharyngometry and Its Correlation with Cephalogram Data

Govindraj¹,

Datana²,

Agarwal³

et al. 2021

IJCOMS

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Aim: To evaluate, pre and post Forsus FRD treatment changes in mean airway volume and area measured in Acoustic Pharyngometer (AP) and to correlate the findings with lateral cephalogram data. Material and Methods: This study was planned on skeletal Class II malocclusion patients diagnosed with mandibular hypoplasia as a cause of Class II malocclusion, requiring fixed functional therapy. Pre-treatment AP records were recorded once the levelling and alignment phase was complete and Forsus FRD appliance was placed. Appliance treatment was continued till the desired objectives i.e optimal overjet and overbite were achieved. Post functional AP records were made at the end of functional therapy, after removal of Forsus FRD. Results: Post functional treatment indicated statistically significant changes on evaluation of upper airway dimensions of the subjects, in mean upper airway volume and area. Conclusion: Study concluded that Forsus FRD is an effective method for correction of skeletal Class II malocclusion among adolescent patients, enhancing significant increase in volume and area of hypopharyngeal and oropharyngeal spaces, thus improving the upper airway patency and as a reliable guide to prevent developing Obstuctive Sleep Apnoea (OSA) in future in these individuals.

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Volumetric changes in pharyngeal airway in Class II division 1 patients treated with Forsus-fixed functional appliance: A three-dimensional cone-beam computed tomography study

Cited by 21 publications

References 16 publications

Short‐term effects of the Sander bite‐jumping appliance on the pharyngeal airways in subjects with skeletal Class II malocclusion: A retrospective case‐control study

Short‐term effects of the Sander bite‐jumping appliance on the pharyngeal airways in subjects with skeletal Class II malocclusion: A retrospective case‐control study

Upper Airway Changes in Diverse Orthodontic Looms: A Systematic Review and Meta-Analysis

Evaluation of Airway Volume and Area in Skeletal Class II Patients Treated with Forsus FRD Using 3D Acoustic Pharyngometry and Its Correlation with Cephalogram Data

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