Total maxillary arch distalization with modified C-palatal plates in adolescents: A long-term study using cone-beam computed tomography

Chou, Alex Hung Kuo; Park, Jae Hyun; Shoaib, Ahmed M.; Lee, Nam-Ki; Lim, Hee Jin; Abdulwhab, Ahmad; Alfawaz, Fawaz; Kook, Yoon‐Ah

doi:10.1016/j.ajodo.2020.02.011

Cited by 21 publications

(12 citation statements)

References 40 publications

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“…Four studies had an untreated control group with both pre-and post-treatment CBCT scans [ 21 , 25 , 43 , 52 ]. Three studies included an untreated control group, with only post-treatment CBCT scans available [ 44 , 49 , 54 ]. In five studies on growth modification, age-matched subjects treated with ‘non-extraction fixed appliances’ served as a control [ 28 , 31 , 32 , 48 , 53 ].…”

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

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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%

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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show abstract

“…Meanwhile in the extraction group, the first molars showed an average of 1.2 mm of mesial movement and 3.5° of mesial tipping despite the use of skeletal anchorage. Another study conducted by Chou et al [ 38 ] examined the long-term effects of distalization treatment on the maxillary tuberosity volume in adolescent patients. They reported no significant decrease in the maxillary tuberosity volume after distalization followed by no significant increase on the long-term follow-up.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the effect of extraction in comparison to distalization on the maxillary third molars in class II malocclusion: a retrospective study

Aboalnaga,

Fouda

2024

Clin Oral Invest

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Objective To compare the effects of first premolar extraction versus distalization on the vertical position and mesiodistal angulation of maxillary third molars (MxM3) in adolescent class II patients. Methods The panoramic x-rays (OPGs) of 200 adolescent class II patients with developing MxM3s were screened. The chosen sample consisted of 2 groups: Group 1 (Distalization) comprising 48 MxM3s, and Group 2 (Extraction) comprising 50 MxM3s. The pre- and post-treatment OPGs were traced to detect the mesiodistal angulation changes of the second molars (MxM2) and MxM3s. Results The angulation and vertical position of the MxM3s at T0 & T1 were also evaluated using Archer’s classification. The distalization group presented a non-significant decrease in the mean angulation of MxM2 and MxM3 (-2.4o & -4.5o uprighting respectively). In the extraction group, both MxM2 and MxM3 presented a highly significant decrease in the mean angulation (-10.5o & -11o uprighting respectively). The angulation and vertical position change of MxM3 significantly improved in the extraction group when compared to the distalization group (P < .001). Conclusion Significant uprighting and occlusal positioning of the maxillary third molars occurred in the premolar extraction treatment group when compared to the distalization treatment group. The results of the current study highlight the importance of recognizing maxillary third molars during orthodontic treatment planning of Class II malocclusion cases.

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“…Nevertheless, this was not discovered in the group that did not undergo extraction procedures. However, Chou et al (30) conducted research in adolescents with Class II malocclusion to assess long-term skeletodental effects, maxillary tuberosity volume, and airway space alterations following maxillary molar distalization using a modified C-palatal plate (MCPP). The total airway volume and the airway MCA increased by just 1.40 mm3 and 7.54 mm2, respectively, following distalization, according to the results.…”

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

confidence: 99%

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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Total maxillary arch distalization with modified C-palatal plates in adolescents: A long-term study using cone-beam computed tomography

Cited by 21 publications

References 40 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

Evaluation of the effect of extraction in comparison to distalization on the maxillary third molars in class II malocclusion: a retrospective study

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

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