成人安氏Ⅱ类与Ⅲ类错牙合 颅底形态差异的CBCT测量研究

Abstract

Abstract: Abstract： Objective To investigate cranial base morphology of patients with Angle Class Ⅱ and Ⅲ malocclusion in the permanent dentition using tomographic cone beam (CBCT). Methods Forty patients aged from 19 to 26 years old were divided into Class Ⅱ and Class Ⅲ group according molar relationship. Linear and angular measurements were obtained in the mid-sagittal plane from the images of CBCT, and analyzed for all subjects. The mean differences between both groups were tested using Student’s t-test for independent samples. Pearson’s product-moment correlations were calculated between the parameters of the sagittal jaw relationship and cranial base. Results The cranial base angle deceased significantly in patients with Class Ⅲ malocclusion compared with Class Ⅱ malocclusion. Positive correlation was detected between SNA and S-N，S-Ba，N-Ba. The value of SNB was found significant negative correlation with NSBa，and positive correlation with S-N，S-Ba，N-Ba. There was also negative correlation between ANB angle NSBa . Conclusions There is association between malocclusion in sagittal jaw relationship and cranial base morphology in adult，and cranial base angle has more effects on maxillofacial morphology.

Key words: adult, cranial base morphology, malocclusion, CBCT

CLC Number:

R783.5

References

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Study of the cranial base morphology of patients with Angle class Ⅱ and Ⅲ malocclusion in adult through CBCT

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