Mito Toshinori, Sato Koshi, Mitani Hideo
Division of Orthodontics, Department of Lifelong Oral Health Science, Graduate School of Dentistry, Tohoku University, Sendai, Japan.
Am J Orthod Dentofacial Orthop. 2002 Oct;122(4):380-5. doi: 10.1067/mod.2002.126896.
The purpose of this study was to establish cervical vertebral bone age as a new index for objectively evaluating skeletal maturation on cephalometric radiographs. Using cephalometric radiographs of 176 girls (ages 7.0-14.9 years), we measured cervical vertebral bodies and determined a regression formula to obtain cervical vertebral bone age. Next, using cephalometric and hand-wrist radiographs of another 66 girls (ages 8.0-13.9 years), we determined the correlation between cervical vertebral bone age and bone age using the Tanner-Whitehouse 2 method. The following results were obtained: (1) a regression formula was determined to obtain cervical vertebral bone age based on ratios of measurements in the third and fourth cervical vertebral bodies; (2) the correlation coefficient for the relationship between cervical vertebral bone age and bone age (0.869) was significantly (P <.05) higher than that for the relationship between cervical vertebral bone age and chronological age (0.705); and (3) the difference (absolute value) between the cervical vertebral bone age and bone age (0.75 years) was significantly (P <.001) smaller than that between cervical vertebral bone age and chronological age (1.17 years). These results suggest that cervical vertebral bone age reflects skeletal maturity because it approximates bone age, which is considered to be the most reliable method for evaluating skeletal maturation. Using cervical vertebral bone age, it might be possible to evaluate maturity in a detailed and objective manner on cephalometric radiographs.
本研究的目的是确立颈椎骨龄，作为在头影测量X线片上客观评估骨骼成熟度的一项新指标。我们使用176名女孩（年龄7.0 - 14.9岁）的头影测量X线片，测量颈椎椎体并确定一个回归公式以获得颈椎骨龄。接下来，我们使用另外66名女孩（年龄8.0 - 13.9岁）的头影测量和手腕部X线片，采用坦纳 - 怀特豪斯2法确定颈椎骨龄与骨龄之间的相关性。获得了以下结果：（1）基于第三和第四颈椎体测量值的比率确定了一个回归公式以获得颈椎骨龄；（2）颈椎骨龄与骨龄之间关系的相关系数（0.869）显著（P <.05）高于颈椎骨龄与实际年龄之间关系的相关系数（0.705）；（3）颈椎骨龄与骨龄之间的差异（绝对值）（0.75岁）显著（P <.001）小于颈椎骨龄与实际年龄之间的差异（1.17岁）。这些结果表明，颈椎骨龄反映骨骼成熟度，因为它接近骨龄，而骨龄被认为是评估骨骼成熟度最可靠的方法。使用颈椎骨龄，有可能在头影测量X线片上以详细且客观的方式评估成熟度。
