Correlation Analysis between Three-Dimensional Changes in Pharyngeal Airway Space and Skeletal Changes in Patients with Skeletal Class II Malocclusion following Orthognathic Surgery

Kim, Moonhwan; Hwang, Chung Ju; Yul, Jung; Lee, Sang-Hwy; Kim, Young-Joon; Yu, Hyung Seog

doi:10.1155/2022/3995690

Cited by 6 publications

(6 citation statements)

References 39 publications

(37 reference statements)

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“…In this context, the treatment of open bite involves preventive treatments, eliminating harmful habits, correcting the posture of soft tissues through the use of palatal grids or orthopedic appliances, passing through corrective mechanics, extractions, elastics, alignment, and leveling headgear, and orthognathic surgery [1,2].…”

Section: The Characteristics Of Individuals With Anteriormentioning

confidence: 99%

“…The literature is controversial concerning definitions, etiology, and forms of treatment [1][2][3]. The lack of a consensus on the etiological factors was probably what led to the diversification of AOB treatment plans, explaining the high number of recurrences due to instability [5,6].…”

Section: The Characteristics Of Individuals With Anteriormentioning

confidence: 99%

“…Besides, tongue positioning is generally neglected by dentists, however, it is an important factor to be considered, as lingual posture is one of the most important factors that allow the development of AOB [1,2]. To achieve stability, there must be good occlusion after performing the open bite correction treatment, so the orthodontist should aim for excellent occlusion, with simultaneous bilateral contacts, in total harmony with the centric relationship, with the presence of disocclusion of posterior teeth, when in excursive movements of the mandible [1,3].…”

Section: The Characteristics Of Individuals With Anteriormentioning

confidence: 99%

“…Some authors define the AOB as the deviation in the vertical relationship between the maxilla and the mandible, others define it as the absence of negative overlap between the incisors of the upper incisors and the incisors of the lower incisors, however, the AOB can still be defined as the absence of contact between the incisors of anterior teeth in centric relation [1,2]. The deleterious habits are the main etiological factors, and the etiology is multifactorial, but it can also be related to the lack of alveolar bone growth in the anterior region of the mandible or three other factors such as excessive posterior alveolar growth, shortening of the mandibular ramus, as well as increased mandibular angle [7].…”

Section: Clinical Findings (N=13 Clinical Studies)mentioning

confidence: 99%

“…In the ortho-surgery treatment, the anterior open bite (AOB) is the lack of vertical contact or negative overbite between the anterior teeth of the superior and inferior arches when the posterior teeth are in occlusion [1][2][3]. The AOB is an easily recognized malocclusion and presents only aesthetic and functional problems [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Major clinical findings of ortho-surgical procedures in Class II patients: a concise systematic review

Bijotti¹,

Oliveira²,

Moreira³

et al. 2022

MedNEXT

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Introduction: In the ortho-surgery treatment, the AOB is an easily recognized malocclusion and presents only aesthetic and functional problems. Its etiology is multifactorial, including heredity, oral habits, unfavorable growth patterns, and increased lymphatic tissue along with mouth breathing and functional oral matrices. The prevalence of anterior open bite in the early mixed dentition is approximately 17.0-25%. Objective: the present study aimed to list the major clinical findings of ortho-surgical procedures in class II patients, as well as to analyze the risks of bias between the selected clinical studies. Methods: The present study was followed by a systematic literature review model, according to the PRISMA rules. The search strategy was performed in the PubMed, Cochrane Library, Web of Science and Scopus, and Google Scholar databases. The present study was carried out from February to June of 2022. The quality of the studies was based on the GRADE instrument, with randomized controlled clinical studies, prospective controlled clinical studies, and studies of systematic review and meta-analysis listed as the studies with the greatest scientific evidence, and the Risk of Bias was analyzed according to the Cochrane instrument (Funnel Plot Analysis). Results and Conclusion: A total of 111 articles were found. After this process, the abstracts were evaluated and a new exclusion was performed based on the GRADE Instrument and Risk of Bias. A total of 57 articles were fully evaluated and 13 clinical studies were included and discussed in this systematic review study. Considering the Cochrane tool for risk of bias, the overall assessment resulted in 27 studies that were excluded with a Major Risk of Bias (studies with small sample size), and 44 studies that were excluded with a Minor Risk of Bias. Also, 7 studies were excluded because they did not meet the GRADE. Significant improvement in anterior occlusion can be expected in most patients when maxillary or mandibular surgery is used for Class II open bite correction. However, there will be individual patients in whom there will be considerable post-treatment changes in the anteroposterior and vertical dimensions. Although individual morphology needs to be taken into account, it appears that both short-term and long-term stability are likely to be greater after Le Fort I surgery compared to bilateral sagittal split osteotomy.

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Section: The Characteristics Of Individuals With Anteriormentioning

confidence: 99%

Section: The Characteristics Of Individuals With Anteriormentioning

confidence: 99%

Section: The Characteristics Of Individuals With Anteriormentioning

confidence: 99%

Section: Clinical Findings (N=13 Clinical Studies)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Major clinical findings of ortho-surgical procedures in Class II patients: a concise systematic review

Bijotti¹,

Oliveira²,

Moreira³

et al. 2022

MedNEXT

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Measurement of Upper Airway Volume in Children with Craniofacial Abnormalities

Gordon,

Ben‐Dov,

Asfour

et al. 2023

The Laryngoscope

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Objective(s)Previous literature has established a high prevalence of upper airway obstruction in children with craniofacial abnormalities. This study aims to perform quantitative airway volume measurements in patients with craniofacial abnormalities and compare them to age and sex‐matched controls.MethodsWe performed a retrospective review of the records of all children with craniofacial abnormalities who underwent head‐and‐neck computed tomography (CT) imaging at a single tertiary‐care center between 1/1/13 and 12/31/20 using the ICD‐10 codes Q75.1, Q75.4, and Q87.0. These patients were then matched by age and sex to patients with isolated craniosynostosis (Q75.0). CT scans were imported into Dolphin Imaging software, and airway volumes were measured for the nasal cavity, nasopharynx, oropharynx, and hypopharynx. The primary outcome was the total airway volume, defined as the sum of these measurements.ResultsThirty subjects with craniofacial syndromes were matched to 30 patients with isolated craniosynostosis (controls). In both groups, 18 subjects (60%) were male (p = 0.99). The average ages for syndromic patients and controls were 12.1 and 12.9 months, respectively (p = 0.84). On average, the total airway volumes of syndromic patients were 25% lower than those of controls (p = 0.02). Syndromic patients had 39% smaller nasal cavity volumes (p < 0.001) and 32% smaller nasopharyngeal volumes (p < 0.01). Significant volume differences were not observed for the oropharynx or hypopharynx.ConclusionWe present a unique technique to measure airway volumes in patients with craniofacial abnormalities. These findings will help practitioners to further understand the anatomy and pathophysiology of disturbed breathing in children with craniofacial syndromes.Level of EvidenceIII Laryngoscope, 2023

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Postoperative Upper Airway Volume Measurements Among Children With Craniofacial Abnormalities

Ben‐Dov,

Pan,

Gordon

et al. 2024

Otolaryngol.--head neck surg.

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ObjectiveTo measure postoperative airway volumes among patients with craniofacial abnormalities and compare them to normative values.Study DesignRetrospective, comparative study.SettingAcademic Medical Center.MethodsRetrospective analysis of imaging of children with craniofacial abnormalities treated at NYU Langone Health from January 2013 to February 2021. Upper airway volumes postcraniofacial surgery were measured using 3D processing software (Dolphin 3D, version 11.95). These values were compared with published normative values.ResultsTwenty‐one subjects were identified and compared to normative values. The postoperative oropharyngeal volumes were on average 43.7% smaller than the normative values (P < .001), and the total upper airway volumes were 31.6% smaller (P = .003). No significant differences were observed in the nasopharyngeal or hypopharyngeal volumes of the study cohort compared to the normative data. Among children ages 12 to 17 years (n = 13), the mean oropharyngeal volumes were 47.6% smaller than normal (P < .001), and the mean total upper airway volumes were 34.6% smaller than normal (P < .001). Among children ages 7 to 11 years (n = 8), the mean oropharyngeal volumes were 35.1% smaller than normal (P = .049), but no difference in mean total upper airway volume was observed.ConclusionIn children with craniofacial anomalies, postoperative airway volumes remain lower than normative values. However, even a slight increase in airway volume can yield a substantial increase in flow rate. 3D airway evaluations are a valuable tool for surgical planning and analysis and can help with optimizing airway dynamics.

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Correlation Analysis between Three-Dimensional Changes in Pharyngeal Airway Space and Skeletal Changes in Patients with Skeletal Class II Malocclusion following Orthognathic Surgery

Cited by 6 publications

References 39 publications

Major clinical findings of ortho-surgical procedures in Class II patients: a concise systematic review

Major clinical findings of ortho-surgical procedures in Class II patients: a concise systematic review

Measurement of Upper Airway Volume in Children with Craniofacial Abnormalities

Postoperative Upper Airway Volume Measurements Among Children With Craniofacial Abnormalities

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