Tags

Type your tag names separated by a space and hit enter

Enhanced increase in pharyngeal airway size in Japanese class II children following a 1-year treatment with an activator appliance.
Int J Orthod Milwaukee. 2013 Winter; 24(4):35-40.IJ

Abstract

OBJECTIVE

The aim of this study was to assess the upper airway soft-tissue structures in Class IIJapanese children following activator treatment by means of cephalometric analysis.

STUDY DESIGN

A lateral cephalometric radiograph was taken of each patient at Ti (prior to the placement of the activator; mean age: 11 years, 5 months) and T2 (after 1 year of activator treatment; mean age: 12 years, 5 months). Tracings of the lateral cephalometric radiographs were made on acetate paper, and several soft-tissue points and contours of the tongue, soft palate, hyoid, and pharynx were digitised.

RESULTS

The sizes of the oropharynx and hypopharynx were significantly smaller in Class II patients than in Class I patients. Moreover, significant differences were observed in the sizes of the tongue and soft palate between Class I and II patients at the age of 12. In terms of the ratio of change relative to the initial values between the 2 skeletal patterns, the width and dimension of the pharyngeal airway in Class II patients showed considerable increases after activator use.

CONCLUSION

The pharyngeal airway soft tissue structures of Class I patients using the activator exceeded normal growth after 1 year. This finding suggests that correction ofskeletal Class II discrepancies by the activator in orthodontic treatment could reduce the risk of respiratory problems, such as severe snoring, obstructive sleep apnoea, and excessive daytime sleepiness in the future.

Authors

No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

24640074

Citation

Horihata, Atsushi, et al. "Enhanced Increase in Pharyngeal Airway Size in Japanese Class II Children Following a 1-year Treatment With an Activator Appliance." International Journal of Orthodontics (Milwaukee, Wis.), vol. 24, no. 4, 2013, pp. 35-40.
Horihata A, Ueda H, Koh M, et al. Enhanced increase in pharyngeal airway size in Japanese class II children following a 1-year treatment with an activator appliance. Int J Orthod Milwaukee. 2013;24(4):35-40.
Horihata, A., Ueda, H., Koh, M., Watanabe, G., & Tanne, K. (2013). Enhanced increase in pharyngeal airway size in Japanese class II children following a 1-year treatment with an activator appliance. International Journal of Orthodontics (Milwaukee, Wis.), 24(4), 35-40.
Horihata A, et al. Enhanced Increase in Pharyngeal Airway Size in Japanese Class II Children Following a 1-year Treatment With an Activator Appliance. Int J Orthod Milwaukee. 2013;24(4):35-40. PubMed PMID: 24640074.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Enhanced increase in pharyngeal airway size in Japanese class II children following a 1-year treatment with an activator appliance. AU - Horihata,Atsushi, AU - Ueda,Hiroshi, AU - Koh,Myongsun, AU - Watanabe,Genki, AU - Tanne,Kazuo, PY - 2014/3/20/entrez PY - 2013/1/1/pubmed PY - 2014/4/25/medline SP - 35 EP - 40 JF - International journal of orthodontics (Milwaukee, Wis.) JO - Int J Orthod Milwaukee VL - 24 IS - 4 N2 - OBJECTIVE: The aim of this study was to assess the upper airway soft-tissue structures in Class IIJapanese children following activator treatment by means of cephalometric analysis. STUDY DESIGN: A lateral cephalometric radiograph was taken of each patient at Ti (prior to the placement of the activator; mean age: 11 years, 5 months) and T2 (after 1 year of activator treatment; mean age: 12 years, 5 months). Tracings of the lateral cephalometric radiographs were made on acetate paper, and several soft-tissue points and contours of the tongue, soft palate, hyoid, and pharynx were digitised. RESULTS: The sizes of the oropharynx and hypopharynx were significantly smaller in Class II patients than in Class I patients. Moreover, significant differences were observed in the sizes of the tongue and soft palate between Class I and II patients at the age of 12. In terms of the ratio of change relative to the initial values between the 2 skeletal patterns, the width and dimension of the pharyngeal airway in Class II patients showed considerable increases after activator use. CONCLUSION: The pharyngeal airway soft tissue structures of Class I patients using the activator exceeded normal growth after 1 year. This finding suggests that correction ofskeletal Class II discrepancies by the activator in orthodontic treatment could reduce the risk of respiratory problems, such as severe snoring, obstructive sleep apnoea, and excessive daytime sleepiness in the future. SN - 1539-1450 UR - https://www.unboundmedicine.com/medline/citation/24640074/Enhanced_increase_in_pharyngeal_airway_size_in_Japanese_class_II_children_following_a_1_year_treatment_with_an_activator_appliance_ DB - PRIME DP - Unbound Medicine ER -