Fractal analysis of mandibular bone structure in individuals with unilateral crossbite.

IF 2.3 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Korean Journal of Orthodontics Pub Date : 2025-07-25 Epub Date: 2025-04-30 DOI:10.4041/kjod24.296

Serdar Cik, Gozde Acıkgoz, Ali Kiki

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引用次数: 0

Abstract

Objective: This study aimed to examine the effects of unilateral crossbite on the structure of the mandibular bone by using fractal analysis.

Methods: This study was conducted using panoramic films obtained retrospectively from 45 individuals with crossbite and 45 individuals with normal occlusion (NO). Fractal measurements were performed on the condyle, corpus, and angulus on both left and right sides of the panoramic films. The films were divided into three groups: cross-side (Cs), normal-side (Ns), and NO. The Cs group was further analyzed on the basis of the number of teeth in the crossbite. Data were analyzed using the non-parametric Kruskal-Wallis test and post-hoc Dunnett's T3 multiple-comparison test. Statistical significance was set at P < 0.05.

Results: The mean condylar fractal dimension (FD) showed no significant difference between the groups (P > 0.05). The mean angulus FD in the Cs group was significantly higher than that in the NO group (P = 0.006). Similarly, the mean corpus FD in the NO group was significantly lower than those in the Cs and Ns groups (P = 0.003). In the Cs group, comparisons based on the number of teeth in the crossbite showed no significant differences among the condyle, angulus, or corpus regions.

Conclusions: Fractal analysis may be an effective approach for detecting variations in mandibular trabecular patterns associated with unilateral crossbites. In cases of unilateral crossbite, the trabecular structure was affected in the angulus and corpus regions.

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单侧交叉咬合患者下颌骨结构的分形分析。

目的：应用分形分析方法研究单侧十字咬合对下颌骨结构的影响。方法：对45例交叉咬合患者和45例正常咬合患者的全景片进行回顾性研究。在全景片的左右两侧对髁突、体和角进行分形测量。膜分为三组：交叉侧（Cs），正侧（Ns）和NO。Cs组根据交叉咬合中牙数进行进一步分析。数据分析采用非参数Kruskal-Wallis检验和事后Dunnett’s T3多重比较检验。差异有统计学意义，P < 0.05。结果：两组间髁突平均分形维数（FD）差异无统计学意义（P < 0.05）。Cs组平均角度FD显著高于NO组（P = 0.006）。NO组的平均体FD显著低于Cs和Ns组（P = 0.003）。在Cs组中，基于交叉咬合中牙齿数量的比较显示髁突、牙角或牙体区域之间没有显着差异。结论：分形分析可能是检测单侧交叉咬伤相关下颌小梁形态变化的有效方法。在单侧交叉咬伤的情况下，小梁结构在牙角和牙体区域受到影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Korean Journal of Orthodontics DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.50

自引率

10.50%

发文量

审稿时长

>12 weeks

期刊介绍： The Korean Journal of Orthodontics (KJO) is an international, open access, peer reviewed journal published in January, March, May, July, September, and November each year. It was first launched in 1970 and, as the official scientific publication of Korean Association of Orthodontists, KJO aims to publish high quality clinical and scientific original research papers in all areas related to orthodontics and dentofacial orthopedics. Specifically, its interest focuses on evidence-based investigations of contemporary diagnostic procedures and treatment techniques, expanding to significant clinical reports of diverse treatment approaches. The scope of KJO covers all areas of orthodontics and dentofacial orthopedics including successful diagnostic procedures and treatment planning, growth and development of the face and its clinical implications, appliance designs, biomechanics, TMJ disorders and adult treatment. Specifically, its latest interest focuses on skeletal anchorage devices, orthodontic appliance and biomaterials, 3 dimensional imaging techniques utilized for dentofacial diagnosis and treatment planning, and orthognathic surgery to correct skeletal disharmony in association of orthodontic treatment.