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Background To provide a craniofacial and upper airway cephalometric characteristics of Chinese children analysis with Class III malocclusion (skeletal and dental) in 4-to 5-Year-Old Children in shijiazhuang, China. Materials & methods Lateral cephalographs of male and female groups of 78 children (aged from 3.5 to 5.5 years) with skeletal Class III (S III) malocclusion were compared to those of 64 children (aged from 3.5 to 5.5 years) with dental Class III (D III) malocclusion. 19 indicators were involved in which represented the maxilla、mandible and their relative position, the growth pattern of the mandible and the width of the upper airway. Wilcoxon two-sample test and Student's t-tests were performed to assess differences between S III malocclusion (group 1) and D III malocclusion (group 2) with SPSS 21.0. Results Significant differences were showed in the measurements as follows. Compared to the D III group, in the S III group, maxillary sagittal growth deficiency apparently localized around the point A, with the mandible being more excessive forward and less backward and downward rotation. (P |
