Background

Sufficient alveolar housing is fundamental to ensure the favorable prognosis of autotransplanted teeth. However, little is known about the alveolar ridge profiles of the anterior maxilla in children. Therefore, this study aimed to investigate the alveolar ridge profiles of the anterior maxilla in growing children.

Methods

A total of 169 Korean children aged 10–13 years old were included in this retrospective study. Demographic data and cone-beam computed tomography scans of 244 maxillary central incisors were collected. For each tooth, the alveolar ridge thickness was determined at 1-, 3-, and 5-mm levels below the cemento-enamel junction. The alveolar process height and labial concavity were also evaluated. Statistical analyses were performed to evaluate differences according to age and sex.

Results

The alveolar ridge thickness did not differ according to age. The alveolar ridge thickness in males was significantly greater than that in females among those aged 10 and 11 years. The average alveolar process height was 17.43 ± 2.22 mm. The alveolar process height hardly changed with age from 10–13 years, whereas the alveolar process height of males was significantly greater compared with that of females among those aged 10 years. The labial concavity was approximately 150˚, with no significant differences between age and sex.

Conclusions

Within the limits of this study, the anatomy of the alveolar ridge in the maxillary central incisors showed sufficient capacity as a recipient site for autotransplantation using mandibular premolars, especially in males. These findings serve as a valuable resource for facilitating autotransplantation in children.

中文翻译：

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自体移植儿童上颌中切牙牙槽嵴轮廓三维分析

背景

足够的牙槽容量是确保自体移植牙良好预后的基础。然而，人们对儿童上颌前牙槽嵴轮廓知之甚少。因此，本研究旨在调查成长儿童上颌前牙的牙槽嵴轮廓。

方法

这项回顾性研究共纳入了 169 名 10-13 岁的韩国儿童。收集了 244 颗上颌中切牙的人口统计数据和锥形束计算机断层扫描。对于每颗牙齿，牙槽嵴厚度是在牙骨质-牙釉质交界处下方 1、3 和 5 毫米水平处确定的。还评估了牙槽突高度和唇凹度。进行统计分析以评估根据年龄和性别的差异。

结果

牙槽嵴厚度不随年龄而变化。10岁和11岁年龄段男性的牙槽嵴厚度显着大于女性。平均牙槽突高度为 17.43 ± 2.22 mm。10~13岁期间，牙槽突高度几乎没有随年龄变化，而10岁年龄段男性的牙槽突高度明显高于女性。阴唇凹度约为150°，年龄和性别之间无显着差异。

结论

在本研究的范围内，上颌中切牙牙槽嵴的解剖结构显示出足够的能力作为下颌前磨牙自体移植的受体部位，特别是在男性中。这些发现是促进儿童自体移植的宝贵资源。