McNamara cephalometric analysis in Tianjin adults with normal occlusion

Objective:To obtain reference value of McNamara cephalometric analysis of Tianjin adults with normal occlusion.Methods:86 people of Han nationality at permanent with normal occlusion dentition were selected from Tianjin region (female 43,male 43,average age 20).Lateral cephalometric radiographs were taken.McNamara analysis was conducted to obtain the reference value of McNamara cephalometric analysis by using winceph soft ware.Compared the Tianjin norms were with Shanghai.Results:(1)The reference value of McNamara cephalometric analysis in Tianjin adults with normal occlusion was established.The comparative results between male and female in Tianjin presented the differences with regard to the Nasion perpendicular to point A,the Pogonion to Nasion perpendicular,the effective maxillary length,the effective mandibular length and the lower anterior facial height,and at those aspect,the male's value was larger than female's (P0.05).(2)The pearson correlation analysis was built.(3)The effective maxillary length,the effective mandibular length and the lower anterior facial height of the male of Shanghai were larger than those of Tianjin.The lower incisor to A-Po line of the male of Shanghai was smaller than those of Tianjin (P0.05).Conclusion:(1)There is sexual difference in the McNamara analysis.(2)The analysis give priority to the distance,and is much sensitive,it is complete to evaluate the arrow state of jaw bones integrate with ANB angle and Wits value.