Comparison of hyoid bone positions among patients with different sagittal skeletal malocclusions
YAN Zhebin,
XIAO Chuqiao,
LI Yaqi,
CHENG Qiaoyu,
FAN Peidi,
WANG Jun,
XIONG Xin
Affiliations
YAN Zhebin
State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University
XIAO Chuqiao
State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University
LI Yaqi
State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University
CHENG Qiaoyu
State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University
FAN Peidi
State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University
WANG Jun
State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University
XIONG Xin
State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Disease, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University
Objective To compare the hyoid bone position among patients with different sagittal skeletal malocclusions to provide a reference for clinicians to formulate treatment plans. Methods Lateral cephalograms of 284 orthodontic patients were selected. According to ANB angles, the types of skeletal malocclusion of patients were determined as follows: Class Ⅰ (1° ≤ ANB ≤ 5°), Class Ⅱ (ANB>5°) and Class Ⅲ (ANB0.05). The angle between the Gonion-hyoid point line and the hyoid point-Menton line (Go-Hy-Me) of Class Ⅱ patients was significantly smaller than that of Class Ⅰ patients, and the angle between the most anterior and inferior point of the third cervical vertebra-hyoid point line and the hyoid point-Sella line (C3-Hy-S) of Class Ⅲ patients was smaller than that of Class I patients (P0.05). Conclusions Compared with Class Ⅰ patients, the hyoid bone of Class Ⅱ patients in adult females was farther away from the mandible and that of Class Ⅲ patients in juveniles was farther away from the cervical vertebra and posterior cranial base.
