Relationship between Class III malocclusion and hyoid bone displacement during swallowing: a cine-magnetic resonance imaging study

Gökçe, Sıla Mermut; Gökçe, Hasan; Görgülü, Serkan; Karaçay, Şeniz; Akça, Ahmet; Ölmez, Hüseyin

doi:10.4041/kjod.2012.42.4.190

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…Haralabakis [18] found that the position of the hyoid bone was closely related to the tongue position, and the position of the hyoid bone in open bite patients was relatively higher than that in patients with a normal bite. Gokce and other scholars [19] found a specific abnormal position of the hyoid bone in patients with skeletal Class III malocclusion, which was closely related to abnormal swallowing activities. There was a relationship between mandibular positional changes and the position of the hyoid bone [20].…”

Section: Relationships Among Abnormal Tongue Position Hyoid Bone Posi...mentioning

confidence: 74%

Effect of orofacial myofunctional therapy along with preformed appliances on patients with mixed dentition and lip incompetence

2022

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Background Various preformed early orthodontic appliances for correcting oral habits and training orofacial muscles have emerged on the market. However, there are few reports on the effectiveness of these appliances for orofacial myofunctional training. Methods This retrospective study evaluated children with lip incompetence and mixed dentition treated at the Pediatric Dentistry Department of Shanghai Ninth People’s Hospital from 2016 to 2018. A total of 109 children (54 males, 55 females; age range: 7–10 years, mean age: 8.2 years) were selected from an overall sample of 870 patients. During the first visit, all patients were instructed to perform active lip and tongue training at home daily and were divided into two groups according to the kind of appliances worn. The first group consisted of 56 subjects (30 females; 26 males), with a mean age of 8.1 years (SD 1.1 years), treated with preformed appliances. The second group consisted of 53 subjects (25 females; 28 males), with a mean age of 8.2 years (SD 1.0 years), treated with conventional early orthodontic appliances (arch expansion devices along with "2*4" local fixed appliances). For each subject in the two groups, initial (pretreatment, T1) and final (posttreatment, T2) intraoral and external photos, dental casts, lateral cephalograms, and orthopantograms were taken, and lip strength was measured. SNA, SNB, ANB, APDI, FMA, U1SN, and IMPA before and after treatment were measured by The Dolphin Imaging Cephalometric Analysis Software. The hyoid bone position was also recorded. Differences between groups were identified with an independent sample t-test (P < 0.05). Results In the first group, a statistically significant forward movement of the mandible was detected by an increase in SNB of − 1.06 degrees (P < 0.01) and an increase in APDI of − 2.23 degrees (P < 0.01). The increase in IMPA (− 3.21 degrees, P < 0.01) demonstrated a statistically significant protrusion of the lower incisors. Lip strength significantly increased (− 2.44, P < 0.01). The increase in HC3 (− 1 mm, P < 0.01) and HFH (− 2.95 mm, P < 0.01) implied a forward and downward movement of the hyoid bone. In the second group, a statistically significant forward movement of the mandible was also detected by an increase in APDI of -1.96 degrees (P < 0.01). Lip strength also significantly increased (− 1.24, P < 0.01). The increase in HFH (− 2.55 mm, P < 0.01) implied a downward movement of the hyoid bone. Compared with the treatment in the second group, orofacial myofunctional therapy combined with the preformed appliances led to a statistically significant lip strength increase (− 2.30, P < 0.05). Significant differences were observed in SNB and IMPA between the two groups (P < 0.05). Conclusions Orofacial myofunctional therapy effectively improved patient lip strength and was a good option for mixed dentition patients with lip incompetence. Preformed appliances could enhance the orofacial myofunctional therapy effect and result in significant improvements in lip strength and forward movement of the mandible, which can optimize the jaw relationship.

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Section: Relationships Among Abnormal Tongue Position Hyoid Bone Posi...mentioning

confidence: 74%

Effect of orofacial myofunctional therapy along with preformed appliances on patients with mixed dentition and lip incompetence

2022

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Expert consensus on pediatric orthodontic therapies of malocclusions in children

Zhou,

Duan,

et al. 2024

Int J Oral Sci

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Malocclusion, identified by the World Health Organization (WHO) as one of three major oral diseases, profoundly impacts the dental-maxillofacial functions, facial esthetics, and long-term development of ~260 million children in China. Beyond its physical manifestations, malocclusion also significantly influences the psycho-social well-being of these children. Timely intervention in malocclusion can foster an environment conducive to dental-maxillofacial development and substantially decrease the incidence of malocclusion or reduce the severity and complexity of malocclusion in the permanent dentition, by mitigating the negative impact of abnormal environmental influences on the growth. Early orthodontic treatment encompasses accurate identification and treatment of dental and maxillofacial morphological and functional abnormalities during various stages of dental-maxillofacial development, ranging from fetal stages to the early permanent dentition phase. From an economic and societal standpoint, the urgency for effective early orthodontic treatments for malocclusions in childhood cannot be overstated, underlining its profound practical and social importance. This consensus paper discusses the characteristics and the detrimental effects of malocclusion in children, emphasizing critical need for early treatment. It elaborates on corresponding core principles and fundamental approaches in early orthodontics, proposing comprehensive guidance for preventive and interceptive orthodontic treatment, serving as a reference for clinicians engaged in early orthodontic treatment.

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MRI in Dentistry- A Future Towards Radiation Free Imaging – Systematic Review

Niraj¹

2016

JCDR

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Relationship between Class III malocclusion and hyoid bone displacement during swallowing: a cine-magnetic resonance imaging study

Cited by 3 publications

References 29 publications

Effect of orofacial myofunctional therapy along with preformed appliances on patients with mixed dentition and lip incompetence

Effect of orofacial myofunctional therapy along with preformed appliances on patients with mixed dentition and lip incompetence

Expert consensus on pediatric orthodontic therapies of malocclusions in children

MRI in Dentistry- A Future Towards Radiation Free Imaging – Systematic Review

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