ID | 119012 |
Title Alternative | Effect on tongue posture by tonsil hypertrophy
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Author |
Oku, Yoichiro
Kagoshima University
Iwasaki, Tomonori
Tokushima University
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Tsujii, Toshiya
Kagoshima University
Sakoda-Iwata, Rina
Kagoshima University
Hisagai, Soujiro
Kagoshima University
Ban, Yuusuke
Kagoshima University
Sato, Hideo
Kagoshima University
Ishii, Hitomi
Kanomi Orthodontic Office
Kanomi, Ryuzo
Kanomi Orthodontic Office
Yamasaki, Youichi
Kagoshima University
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Keywords | Tonsil
Tongue posture
Maxillofacial dentition
Pharyngeal airway
Computational fluid dynamics
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Content Type |
Journal Article
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Description | Objectives: This study aimed to clarify the effect of palatine tonsil hypertrophy-induced ventilation obstruction on maxillofacial dentition morphology using computational fluid dynamics (CFD) to represent tongue posture and maxillofacial dentition three dimensionally.
Materials and Methods: We analyzed data of 20 patients with tonsil hypertrophy (tonsil hypertrophy group (TG); 9.0 years old, seven boys) and a comparison group (CG) of 20 patients without tonsil hyperplasia (comparison group; 9.4 years old, 10 boys). Cone-beam computed tomography and CFD data were used to assess the effects of palatine tonsil hypertrophy on pharyngeal airway ventilation, tongue posture, and morphology of the maxillofacial dentition. Results: The TG exhibited significantly greater depth, narrower width, smaller cross-sectional area of the pharyngeal airway, and narrower maxillary dental arch with Class II than the CG. Additionally, the tongue was positioned significantly more anteriorly and inferiorly in the TG than that in the CG. Conclusions: Our data suggest that hypertrophy of the palatine tonsils narrows the pharyngeal airway, resulting in a smaller cross-sectional area. Widening of the pharyngeal airway may occur due to compensatory anterior displacement of the tongue to prevent ventilation obstruction. This may decrease palatal support, disturbing the pressure balance of the maxillary molar region between the buccal and palatal sides and resulting in lateral undergrowth of the maxillary bone and narrowing of the maxillary dental arch. |
Journal Title |
Pediatric Dental Journal
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ISSN | 18803997
09172394
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NCID | AA12795985
AA10809637
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Publisher | Japanese Society of Pediatric Dentistry|Elsevier
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Volume | 33
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Issue | 1
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Start Page | 42
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End Page | 51
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Published Date | 2023-01-25
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Rights | © 2023. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
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DOI (Published Version) | |
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language |
eng
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TextVersion |
Author
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departments |
Oral Sciences
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