摘要
目的 探讨自然头位(NHP)下真性水平面(THP)作参考平面的可靠性。方法 选择5 0例11～16岁错牙合畸形患者,男性16例,女性34例,每例患者2次摄取自然头位下的X线头颅侧位片,测量SN平面、FH平面以及真性水平面并进行统计分析。结果 同一患者2次自然头位下X线头颅侧位片SN THP和FH THP前后对比差异皆无统计学意义(P >0 .0 5 ) ,SN THP和FH THP的变异程度皆较大。结论 自然头位下THP作参考平面比SN和FH平面更有临床指导意义。
Objective To investigate the reliability and validity of True Horizontal Plane(THP) under natural head position(NHP) compared to SN plane and FH plane in evaluation of sagittal cranofacial relationship. Methods Lateral radiographs were taken under natural head position from 50 malocclusion patients(16 boys and 34 girls), aged 11 to 16 years old with original family home in Guangzhou. The second lateral radiographs were taken in the same way from the same patients after a 1-week interval. The angles SN-THP and FH-THP were measured from the tracings, with one THP line draw at right angle to the registered plumb line. Results No statistical differences were found between radiographic measurement of SN-THP and FH-THP respectively in different time (P>0.05). Great interindividual variation of both intracranial reference was found. Conclusion To evaluate the sagittal cranofacial relationship using reference plane, THP under natural head position is recommended.
出处
《广东牙病防治》
2005年第2期107-109,共3页
Journal of Dental Prevention and Treatment
基金
广东省医学科学技术研究基金资助项目 (A2 0 0 4 1 90 )
