Effects of chin advancement surgery in hyoid bone and tongue positions and in the dimension of the oropharynx

Cabral, Milena Santana; Freitas, André Carlos de; Araújo, Telma Martins de; Pena, Nilson; Filho, Rivail Almeida Brandão

doi:10.1590/s2176-94512013000500012

Cited by 8 publications

(2 citation statements)

References 19 publications

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“…This bone plays a significant role in physiological functions such as ingestion, respiration and speaking. Researchers have shown that changes of mandibular position are pertinent to the hyoid bone alterations, and the hyoid bone position adapts to antero-posterior changes of the head ( 10 - 12 ). Also, adaptation of hyoid bone position after orthognathic operations has been revealed ( 13 , 14 ).…”

Section: Introductionmentioning

confidence: 99%

Hyoid bone position in different facial skeletal patterns

Mortazavi¹,

Asghari-Moghaddam²,

Dehghani³

et al. 2018

J Clin Exp Dent

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BackgroundHyoid bone plays a significant role in physiological functions of craniofacial region and it’s position adapts to changes of the head. The purpose of this study was to determine the position of the hyoid bone among subjects with class I, class II and class III skeletal patterns and evaluate the gender differences.Material and MethodsOne hundred and ten lateral cephalograms (59 females and 51 males) from different skeletal patterns (class I, II and III) were selected. The skeletal patterns were determined according to ANB angle. Using MicroDicom software, different linear and angular measurements (6 variables) was carried out to determine the position of hyoid bone. Intraclass correlation coefficient was used to verify reliability. Descriptive statistics of the variables were calculated and analyzed using two-way ANOVA and Bonferroni statistical methods.ResultsThe mean distance from the hyoid bone (H) to mandibular plane (MP), to palatal plane (PP), as well as to a third cervical vertebra (C3) was more in males than females (p=0.023, p<0.001, p<0.001 respectively). The mean H to PP distance was significantly more in skeletal class I compared to class III (P=0.01). The mean H to C3 distance was significantly more in skeletal class I compared to class II (P=0.008). The mean angle between H-MP and H-PP did not show any statistical difference among three skeletal classes (p=0.102, P=0.213) and among male and female groups (P=0.172, P=0.904).ConclusionsThe hyoid bone is positioned more superior and posterior in females than males and its location differs among different skeletal classes. It is placed more posterior in skeletal class II patterns and more inferior and anterior in skeletal class I patterns. Key words:Hyoid bone, Lateral cephalometry, Class III, Class II, skeletal pattern, Orthodontics.

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Section: Introductionmentioning

confidence: 99%

Hyoid bone position in different facial skeletal patterns

Mortazavi¹,

Asghari-Moghaddam²,

Dehghani³

et al. 2018

J Clin Exp Dent

View full text Add to dashboard Cite

show abstract

“…The cephalometric analyses were performed digitally by means of the Radiocef Studio 2 program (Radiomemory Ltda, MG, Brazil), using a resolution of 300 dpi for the teleradiographs [ 9 ]. For this purpose, the radiographs were digitized by a table scanner (Cranex D ® Soredex Orion Corporation, Tuusula, Finland) [ 10 ], coupled to a transparency reader, using a resolution of 300 dpi, and saved in TIFF format ( Tagged Image File Format ) without compression.…”

Section: Methodsmentioning

confidence: 99%

A retrospective cephalometric study on upper airway spaces in different facial types

et al. 2017

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BackgroundCraniofacial growth pattern has been correlated with variations in size of the upper airway spaces. The objective of this study was to evaluate the nasopharyngeal, oropharyngeal, and hypopharyngeal airway spaces variations according to the craniofacial growth pattern, by comparing brachyfacial, mesofacial, and dolichofacial in Angle Class I individuals.MethodsTo measure the spaces, 45 lateral teleradiographs were used and divided into 3 groups per the craniofacial growth pattern, determined by the Tweed cephalometry angular measurements: FMA and Y-axis. To evaluate the airways, sleep apnea cephalometry was used, containing 28 points that compose 14 factors. Three groups were compared relative to each of the 14 sleep apnea cephalometry measurements. Adherence test to the normal curve was performed. For the non-normally distributed data—measurement of the inferior pharyngeal space—the Kruskal-Wallis test was used for comparison between the groups. For the remaining data, the distribution was normal and ANOVA test was used.ResultsStatistically significant difference was verified among the groups for the measurement of the median posterior-palatal space, with the difference being pointed out by the post hoc test between the brachyfacial and dolichofacial groups. For the other measurements, there was no statistically significant difference.ConclusionsIt could be concluded that there was difference in the median posterior-palatal space measurement, in the oropharynx region, which was reduced for individuals with a dolichofacial pattern.

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Upper airways after mandibular advancement orthognathic surgery: A 4-year follow-up

Pereira

Rocha

Degan

et al. 2021

American Journal of Orthodontics and Dentofacial Orthopedics

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Effects of chin advancement surgery in hyoid bone and tongue positions and in the dimension of the oropharynx

Abstract: The oropharyngeal dimension increased as the tongue base and hyoid bone were repositioned more anteriorly.

Cited by 8 publications

References 19 publications

Hyoid bone position in different facial skeletal patterns

Hyoid bone position in different facial skeletal patterns

A retrospective cephalometric study on upper airway spaces in different facial types

Upper airways after mandibular advancement orthognathic surgery: A 4-year follow-up

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