Time and pattern of the fusion of the spheno-occipital synchondrosis in patients with skeletal Class i and Class III malocclusion
Document Type
Article
Publication Title
Angle Orthodontist
Abstract
Objectives: To investigate the time and pattern of fusion of the spheno-occipital synchondrosis in patients with skeletal Class I and Class III malocclusion using cone-beam computed tomography (CBCT). Materials and Methods: A total of 262 CBCT images were collected: 140 skeletal Class I (08 , ANB , 48; 71 males, 69 females) and 122 skeletal Class III (ANB _ 08; 61 males and 61 females). The fusion stages were identified using CBCT images of a six-stage system defined by the appearance of osseous cores and ossifying vestige in the synchondrosis. The age distributions of each stage and the pattern of fusion were evaluated. Results: The stages of fusion progressed with increasing age (P , .05, r .824), and the age distributions in the female groups were generally 1 to 3 years younger than those in the male groups. However, no significant differences were observed between the skeletal Class I and Class III groups regarding the time of ossification of the synchondrosis. The osseous cores appeared most frequently in the supero-center part, followed by the mid-center part of the synchondrosis. Conclusions: The time and pattern of fusion of the spheno-occipital synchondrosis are not apparently different between patients with Class I malocclusion and those with Class III malocclusion. The osseous cores appear frequently in the supero-center and mid-center of the synchondrosis with various patterns before the end of the pubertal growth spurt period.
First Page
470
Last Page
479
DOI
10.2319/052218-386.1
Publication Date
1-1-2019
Recommended Citation
Yang, Jae Hee; Cha, Bong Kuen; Choi, Dong Soon; Park, Jae Hyun; and Jang, Insan, "Time and pattern of the fusion of the spheno-occipital synchondrosis in patients with skeletal Class i and Class III malocclusion" (2019). ASDOH Faculty Publications. 93.
https://scholarworks.atsu.edu/asdoh-faculty/93