■小学学龄儿童的面部骨骼生长表现,尤其是女孩。本研究调查了小学女生鼻颌和下颌形态的变化。
■将60名小学女生的头状图分为3组(第一组,7-8岁;第二组,9-10岁;第三组,年龄11-12岁)。鼻甲的尺寸(鼻骨长度,鼻脊长度,鼻深,腭长度,和上颌高度)和下颌骨(髁突长度,髁突宽度,冠状骨长度,冠状面宽度,ramus长度,身体长度,联合长度,和整个下颌长度)进行测量。采用单因素方差分析和Pearson相关系数进行统计分析。
■鼻脊长度,鼻深,第III组上颌高度明显大于第I组和第II组。III组的髁突宽度和体长明显大于I组和II组。皮尔逊相关显示,年龄与鼻脊长度呈显著正相关,鼻深,或上颌高度。年龄与支长度也存在显著正相关,身体长度,或下颌骨的整个长度。
■我们发现鼻脊长度,鼻深,上颌高度,第III组的髁突宽度和体长明显大于第I组或第II组。此外,年龄和鼻脊长度之间有显著的相关性,鼻深,上颌高度,ramus长度,身体长度,或下颌骨的整个长度。
UNASSIGNED: Facial bone growth manifests in primary school-aged children, especially girls. This study investigated the changes in nasomaxillary and mandibular morphology of primary school girls.
UNASSIGNED: Cephalograms of 60 primary school girls were divided into 3 groups (group I, aged 7-8 years; group II, aged 9-10 years; and group III, aged 11-12 years). The dimensions of the nasomaxilla (nasal bone length, nasal ridge length, nasal depth, palatal length, and maxillary height) and mandible (condylar length, condylar width, coronoid length, coronoid width, ramus length, body length, symphysis length, and entire mandibular length) were measured. One-way ANOVA and Pearson\'s correlation coefficient were used for statistical analysis.
UNASSIGNED: Nasal ridge length, nasal depth, and maxillary height were significantly greater in group III than in group I and group II. Condylar width and body length were significantly greater in group III than in group I and group II. Pearson\'s correlation revealed significant positive correlations between age and nasal ridge length, nasal depth, or maxillary height. There were also significant positive correlations between age and ramus length, body length, or entire length of the mandible.
UNASSIGNED: We found that nasal ridge length, nasal depth, maxillary height, condylar width and body length were significantly greater in group III than in group I or in group II. Moreover, there were significant correlations between age and the nasal ridge length, nasal depth, maxillary height, ramus length, body length, or entire length of the mandible.