Pharyngeal dimensional changes in class II malocclusion treatment when using Forsus® or intermaxillary elastics – An exploratory study

Thereza-Bussolaro, Claudine; Oh, Hee So; Lagravère, Manuel O.; Flores‐Mir, Carlos

doi:10.1016/j.ortho.2019.08.023

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…No randomized controlled trials could be identified. Except for one unknown [ 29 ] and two multi-center studies [ 26 , 40 ], all included studies were single-center based. Eight studies had a prospective and 40 a retrospective study design.…”

Section: Resultsmentioning

confidence: 99%

“…Results for fixed appliances therapy with extraction were less consistent, with both increase and decrease of volumes in the airway being reported, though the change was significant only in one study ( p < 0.05) [ 60 ]. This inconsistency can be related to the age of the study subjects, as a decrease in the volume of the airway was observed only in adult patients[ 26 , 55 , 58 , 60 ] while an increase was observed mostly in growing adolescents [ 59 , 60 ].…”

Section: Resultsmentioning

confidence: 99%

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Volumetric changes in the upper airway on CBCT after dentofacial orthopedic interventions - a systematic review

Steegman,

Renkema,

Schoeman

et al. 2023

Clin Oral Invest

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Objective To provide a critical overview of the effect of various orthodontic and/or dentofacial orthopedic interventions on three-dimensional volumetric changes in the upper airway. Materials and methods Four databases were searched for clinical studies concerning 3D volumetric assessments based on CBCT before and after orthodontics interventions. The quality of the studies was assessed using the quality assessment tool of the National Heart, Lung and Blood Institute. After the use of inclusion and exclusion criteria, the pre-and post-treatment volumes were used to visualize the effect of various orthodontics interventions. Results A total of 48 studies were included in this review and none of which were RCTs. The quality of all included studies was assessed as medium. Overall, there is a tendency for an increase in airway volumes after various orthodontic interventions, except for studies concerning extraction therapy with fixed appliances in adults, in which both increases and decreases in airway volumes have been reported. Conclusion Orthodontic treatment by growth modification and non-extraction therapy with fixed appliances, regardless of the malocclusion, generally showed positive effects on the airway volume. Orthodontic treatment in combination with extractions does not provide an unambiguous insight. A consensus on the methodology of the airway measurement and nomenclature is urgently needed in order to gain insight into the effect of different interventions on three-dimensional airway changes. Clinical relevance Various orthodontic treatments do not negatively influence the upper airway volume. However, extraction therapy in adults should be chosen with caution, especially in subjects belonging to a group susceptible to airway obstruction.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Volumetric changes in the upper airway on CBCT after dentofacial orthopedic interventions - a systematic review

Steegman,

Renkema,

Schoeman

et al. 2023

Clin Oral Invest

View full text Add to dashboard Cite

show abstract

“…In similar results, za-Bussolaro et al (28) conducted a retrospective exploratory cohort study to determine the extent to which class II malocclusion treatment with either intermaxillary elastics (IME) or the Forsus fatigue resistance device (FFRD) results in a change in oropharyngeal airway dimensions. The results demonstrated that the oropharyngeal airway increased in size in a comparable way with both orthodontic treatment regimens.…”

Section: Table (3) Total Airway Space In Pre-and Post-distalization D...mentioning

confidence: 96%

Three-Dimensional Evaluation of the Airway Space after Distalization Using Carrière Motion Appliance

ELGhawy

Elkadi

gemaey

2023

Dental Science Updates

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Introduction:Class II malocclusion is a common issue that orthodontists must deal with, representing almost one third of all malocclusions. A link between Class II malocclusion and reduced pharyngeal airway dimensions has been reported. This malocclusion has been treated using a variety of methods. Distalization with Carrière Motion appliance is one of these methods. Aim: Evaluation of the effect of distalization with Carrière Motion appliance as a part of orthodontic treatment on airway dimensions. Materials and methods: Eighteen adult Patients aged from 18-30 years with a full set of permanent dentitions were subjected to wear Carrière Motion appliance for about 4 to 6 months. CBCT images were taken before and after distalization for comparison. Results: The results of this study showed a positive effect of Carrière Motion II on increasing the total airway volume. For the total airway volume, there was a significant increase from 39.9 ± 2.7 ml to 44.9 ± 2.6 ml. Conclusion: Total airway volume (upper airway) was increased significantly.

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“…However, they mentioned that analyses based on two-dimensional cephalometric measurements as the sole indicators had some shortcomings, which may have affected the results. Moreover, upper airway is closely related to the craniomaxillofacial structure [ 7 , 8 ]. But to the best of our knowledge, no previous studies have described changes in pharyngeal size after treating Angle class III malocclusions with Frankel III appliance in children that are growing and developing.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional changes in the upper airway and craniomaxillofacial morphology of patients with Angle Class III malocclusion treated with a Frankel III appliance

Liu

Yang

2021

BMC Oral Health

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Background Angle Class III malocclusion, characterized by a concave profile, can cause serious harm to children’s physical and mental health. The Frankel III appliance is an effective treatment for Angle Class III malocclusion in mixed denition. We explored three-dimensional changes in the upper airway and craniomaxillofacial morphology, after one year of Frankel III appliance treatment, in children with Angle Class III malocclusion. Methods We included 20 children (9 males), aged 8–10 years, with Angle Class III malocclusion from the Orthodontics Department of our hospital. Each child was treated with a Frankel III appliance for one year. Cone beam computed tomography was performed before and after treatment to evaluate three-dimensional changes in the upper airway and craniomaxillofacial morphology. Results After one year of treatment, in the upper airway, we observed significant increases in the nasopharynx volume and height (P < 0.05); the velopharyngeal volume, height, and average cross-sectional area (P < 0.05); the glossopharynx volume and minimum cross-sectional area (P < 0.05); and the laryngopharynx height (P < 0.05). Accordingly, the total upper airway volume, height, and average cross sectional area increased significantly (P < 0.05). An examination of craniomaxillofacial morphology showed significant increases in some bone tissues (P < 0.05) and dental measurements, and a significant reduction in the inclination of the mandibular central incisor (P < 0.05). Conclusion Children with Angle class III malocclusion treated with a Frankel III appliance showed no upper airway narrowing, even after repositioning the mandible posteriorly. Moreover, treatment promoted forward maxilla development and increased its width, in both the dental arch and alveolar bone, which provided a more harmonious craniofacial morphology.

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Pharyngeal dimensional changes in class II malocclusion treatment when using Forsus® or intermaxillary elastics – An exploratory study

Cited by 7 publications

References 23 publications

Volumetric changes in the upper airway on CBCT after dentofacial orthopedic interventions - a systematic review

Volumetric changes in the upper airway on CBCT after dentofacial orthopedic interventions - a systematic review

Three-Dimensional Evaluation of the Airway Space after Distalization Using Carrière Motion Appliance

Three-dimensional changes in the upper airway and craniomaxillofacial morphology of patients with Angle Class III malocclusion treated with a Frankel III appliance

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