评估和比较三组错颌畸形的平面龈角:一项 CBCT 研究。

IF 1.3 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Nandita Krishnaswamy, Poornima Jnaneshwar, Ravi Kannan
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引用次数: 0

摘要

目的:颅底屈曲是颅面研究中一个被忽视的课题。这项回顾性观察研究的目的是利用锥形束计算机断层扫描图像(CBCT),比较代表颅底屈曲的新参数--颅嵴角(PCA),并将PCA与椎枕骨突融合(SOS)的阶段进行相关性分析:共 125 张 CBCT 图像按年龄分为两组(19-25 岁和 12-18 岁)。根据骨骼错颌情况将 57 名受试者(19-25 岁)的 CBCT 图像分为三组,以测量 PCA 和颅底角 (CBA)。第二组包括 68 个 12-18 岁年龄组的 CBCT 数据集,PCA 角度与 SOS 的融合阶段相关。采用独立样本 t 检验、单因素方差分析(ANOVA,组间)、皮尔逊相关和 χ2 检验对数据进行统计分析:结果:比较男性和女性的瓣膜平面角发现,女性的 SOS 融合发生得更早,两者之间的线性相关具有统计学意义(P 2 检验):PCA参数值的动态变化一直持续到SOS融合完成。女性的 SOS 融合较早。对 SOS 融合阶段的评估可用于决定在正畸治疗期间是否仍有可能对颅面复合体进行生长改变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Evaluation and comparison of planum clival angle in three malocclusion groups : A CBCT study.

Evaluation and comparison of planum clival angle in three malocclusion groups : A CBCT study.

Purpose: Cranial base flexure is an overlooked topic in craniofacial research. The aim of this retrospective observational study was to compare a new parameter, the planum clival angle (PCA), which represents cranial base flexure, in skeletal class I, II, and III malocclusions using cone beam computed tomographic images (CBCT) and correlate PCA with the stages of the fusion of the spheno-occipital synchondrosis (SOS).

Materials and methods: A total of 125 CBCTs were divided into two groups based on chronological age (19-25 years and 12-18 years). The CBCT images from 57 subjects (19-25 years old) were categorized into three groups based on their skeletal malocclusion for measuring PCA and cranial base angles (CBA). In the second group, comprising 68 CBCT data sets of individuals in the age group of 12-18 years, the PCA angle was correlated with stages of fusion of the SOS. Data were statistically analyzed using independent samples t test, one-way analysis of variance (ANOVA, intergroup), Pearson correlation, and χ2 test.

Results: There was a statistically significant linear correlation (P < 0.001) between the two parameters PCA and CBA but no significant difference was found in PCAs between the three groups. One-way ANOVA to compare the PCA values in the three stages of fusion of the SOS revealed a highly significant relationship in male subjects (p < 0.001), thereby, suggesting that as fusion progresses, the planum clival angle increases. The χ2 test to compare the planum clival angle in males and females revealed that SOS fusion occurred earlier in females.

Conclusion: There is a constant dynamic change in the value of the parameter PCA that progresses until completion of SOS fusion. The SOS fuses earlier in females. Assessment of the stage of fusion of the SOS can be used in deciding whether growth modification of the craniofacial complex is still possible during orthodontic therapy.

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来源期刊
CiteScore
3.90
自引率
0.00%
发文量
64
审稿时长
>12 weeks
期刊介绍: The Journal of Orofacial Orthopedics provides orthodontists and dentists who are also actively interested in orthodontics, whether in university clinics or private practice, with highly authoritative and up-to-date information based on experimental and clinical research. The journal is one of the leading publications for the promulgation of the results of original work both in the areas of scientific and clinical orthodontics and related areas. All articles undergo peer review before publication. The German Society of Orthodontics (DGKFO) also publishes in the journal important communications, statements and announcements.
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