Three-dimensional evaluation of maxillary dentoalveolar changes and airway space after distalization in adults

Park, Jae Hyun; Kim, Sungkon; Lee, Yoonjin; Bayome, Mohamed; Kook, Yoon‐Ah; Hong, Mihee; Kim, Yoonji

doi:10.2319/121116-889.1

Cited by 25 publications

(11 citation statements)

References 19 publications

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“…Thirty-three articles were then selected for full-text assessment. After the full-text appraisal, 26 articles were excluded due to the following reasons: Article in a different language [30], sample age below 16 years old [24,[31][32][33][34], Different premolar extractions [35,36], Different anchorage designs [25,[37][38][39][40][41][42][43], Different malocclusion [44], Nonretrospective studies [16,19,22,[45][46][47][48][49][50]. Six eligible retrospective study articles were selected in this systematic review [20,22,23,[51][52][53].…”

Section: Resultsmentioning

confidence: 99%

Effects of Four First Premolar Extraction on the Upper Airway Dimension in a NonGrowing Class I Skeletal Patients: A Systematic Review

Choi¹,

Lee²

2022

JOMDR

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Objective: Orthodontic treatment aims not only to treat one's malocclusion and facial aesthetics but also to maintain or improve the patient's airway patency. This review aims to evaluate post-treatment changes in the position of hyoid bone and oropharyngeal airway size and dimensions associated with fixed orthodontic treatment with four first bicuspid extractions in non-growing Class I skeletal bimaxillary protrusion individuals. Methods: Electronic databases including Embase, Web of Science, PubMed, and Scopus were used to research published articles. Included studies assessed the post-treatment effects of four first bicuspid extractions with maximum anchorage on pharyngeal airway dimensions in non-growing patients. Relevant data were obtained, summarised, and analysed from the included studies. © 2020 Terese Winslow LLC, U.S. Govt. has certain rights. OSA is one of the sleep-breathing disturbances caused by collapsing of the upper airway during sleep, characterised by cessation of airflow with persistent respiratory effort, oxygen de-saturations, sleep arousals and sleep fragmentation [4]. Although OSA is a multifactorial disorder associated with obesity, age, facial morphology, airway collapsibility, and neuromuscular feedback, the size of the oropharyngeal airway is highly associated with OSA severity [5-12].Results: Six articles were selected in this systematic review after meeting the requirements of the inclusion criteria. Conclusions: Four bicuspid extractions followed by maximum anchorage involves predominant retraction of the anterior segment of the arches in non-growing skeletal Class I bimaxillary protrusion cases. Extraction of four first premolars led to retraction of the anterior segment and the retroclination of anterior teeth, which narrowed the pharyngeal airway dimensions. After such treatment, the hyoid bone position changes remain inconclusive, which warrants further studies.

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Section: Resultsmentioning

confidence: 99%

Effects of Four First Premolar Extraction on the Upper Airway Dimension in a NonGrowing Class I Skeletal Patients: A Systematic Review

Choi¹,

Lee²

2022

JOMDR

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“…Following maxillary arch distalization, it has been reported that the minimum cross-sectional area of the oropharynx and airway volume were not significantly impacted by treating the included cases with premolar extraction. 31 Reports also indicate that placing mini plates on mandibular arches effectively managed class III malocclusions. 32 It has been further shown that mandibular total arch distalization and mandibular teeth retraction were also significantly achieved by placing remal plates on the retromolar fossa.…”

Section: Discussionmentioning

confidence: 99%

Indication and uses of temporary anchorage device in orthodontic

Bawyan

Anzi

Alkhadra³

et al. 2021

Int J Community Med Public Health

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Treating various types of malocclusion is dependant on providing a secure anchorage. In this context, it has been shown that teeth, intramaxillary, and/or extraoral appliances are required to achieve favorable outcomes regarding anchorage treatment. A Temporary anchorage device (TAD) has been introduced in the literature in this context. It has been described as a temporary device that can be used after completing treatment. The aim of the study was to review the indications and uses of TADs in orthodontic treatment. The current evidence shows that introducing TADs in the field of orthodontic treatment has been associated with favorable outcomes that encountered the previous multiple challenges reported with the conventional anchorage approaches. Contemporary orthodontic settings reported various uses for TADs, including corrections in transverse, vertical, and anteroposterior dimensions. Combined use of TADs and conventional approaches were also evaluated with favorable outcomes. These findings indicate the validity of TADs in orthodontic treatment and call for its future implications and clinical applications. However, it should be noted that post-treatment evaluation on a long-term basis was not adequately reported in the current literature, indicating the need for future investigations for further validation.

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“…Also, several studies have showed that the size of airway space may be decreased by extraction treatment (11)(12)(13) . On the other hand, a study has showed that the airway space was not significantly affected by either extraction or nonextraction treatment of adults (14) . And also, another CBCT study has showed that there were no negative 3-dimensional (3D) long-term effects on airway space after total maxillary arch distalization using modified C-palatal plates in adolescents (15) .…”

Section: Introductionmentioning

confidence: 97%

Pharyngeal airway volume changes following treatment of skeletal class II patients using a miniplate-supported buccally acting distalizer: A retrospective 3-dimensional CBCT study

Ali

Shendy²

2022

Egyptian Dental Journal

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Objective: To evaluate pharyngeal airway volume changes following treatment of skeletal class II patients using miniplate supported buccally acting distalizer; Zyogoma Anchorage System (ZAS) using cone beam computed tomography (CBCT). Materials and Methods:Ten class II patients (8 females and 2 males), with a mean age, 13.44 ± 1.08 years were treated by ZAS. ZAS consists of two zygomatic miniplates, a heavy arch wire, and a closed Nickel Titanium (NiTi) coil spring attached between a power hook on 0.018 × 0.025-inch stainless steel arch wire stepped on the six anterior teeth mesial to the maxillary 1 st premolar and the hook of a miniplate supported to zygomatic buttress of each side. The spring delivered 450 gm continuous force. The volumetric air way changes concomitant to maxillary buccal segments distalization and the sagittal skeletal parameters before and after distalization were analyzed based on CBCT images.Results: Paired sample t-test showed a statistically highly significant (p≤0.01) increase (3.16 cm 3 , 0.78 cm 3 ) in both total airway and nasopharyngeal airway volumes respectively with treatment, whereas retropalatal airway volume showed statistically significant (p≤0.05) increase (0.96 cm 3 ) after treatment with the skeletally anchored distalizing appliance. But retroglossal airway volume showed statistically non-significant (p>0.05) increase (0.81 cm 3 ) with treatment. Moreover, an improvement in class II correction was evident as demonstrated by a statistically highly significant (p≤0.01) increase (4.38 mm, -3.94 mm) in MBCU6-Nv and MBCU6-ptv respectively.Conclusions: Pharyngeal airway volume considerably enhanced subsequent to skeletal class II correction through the miniplate supported distalizer appliance which could be a helpful treatment opportunity for skeletal class II patients who have breathing disorders.

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Three-dimensional evaluation of maxillary dentoalveolar changes and airway space after distalization in adults

Abstract: The application of the MCPP resulted in significant total arch distalization without a significant effect on the transverse dimensions or changes in the oropharynx airway space. The MCPP can be considered a viable treatment option for patients with Class II malocclusion.

Cited by 25 publications

References 19 publications

Effects of Four First Premolar Extraction on the Upper Airway Dimension in a NonGrowing Class I Skeletal Patients: A Systematic Review

Effects of Four First Premolar Extraction on the Upper Airway Dimension in a NonGrowing Class I Skeletal Patients: A Systematic Review

Indication and uses of temporary anchorage device in orthodontic

Pharyngeal airway volume changes following treatment of skeletal class II patients using a miniplate-supported buccally acting distalizer: A retrospective 3-dimensional CBCT study

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