Bakri Mohammed Mousa H, Vishvnathaiah Satish, Bakmani Haifa Fathuldeen, Hakami Abdullah Jaber, Zaidan Meshal Saleh, Dighriri Mohammed Abdullah, Jad Yaser Ali, Hakami Thamer Mohammad, Bakri Hamed Mousa H
Division of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jazan University, Jazan City, Saudi Arabia.
Department of Pediatric Dentistry, College of Dentistry, Jazan University, Jazan, Saudi Arabia.
Heliyon. 2024 Jun 4;10(12):e32362. doi: 10.1016/j.heliyon.2024.e32362. eCollection 2024 Jun 30.
Facial asymmetry results from variation in mandibular linear and angular dimensions on the right and left sides of the face. Mandibular asymmetry is of great significance to oral surgeons and orthodontists as it directly impacts the facial profile of an individual.
The present study aimed to measure the prevalence of mandibular asymmetry and its fluctuations during the mixed dentition growth phase in healthy children aged 6-8 years in the Jazan region of Saudi Arabia.
This retrospective observational study was conducted by measuring linear asymmetrical measurements of mandible on orthopantomograms of 390 healthy children (182 boys and 208 girls, aged 6-8 years) with mixed dentition. Linear measurements from orthopantomograms were obtained using a standardized digitizer. Two sets of mandibular measurements were recorded, alongside subjective assessments of mandibular first molar development. An independent -test was employed to assess the significance between measurements on both sides, while one-way ANOVA was used to demonstrate facial asymmetry significance among different age groups.
The result of this study revealed a significant statistical difference (p-value≤ 0.05) for both sides of the mandible across two dimensions: condylar and ramus height (p value = 0.03) and mandibular length (p value = 0.04). The asymmetry index resulted in no asymmetry among most of the included subjects. However, compared to the other three linear measurements, many seven-year-old participants possess mandibular asymmetry on condylar height (54.5 %).
Within the limitation it could be concluded that children in growing age have a significant mandibular asymmetry (mainly 7 years), which, however, is only seldom clinically significant. Hence, treatment plan should be cautiously planned.
面部不对称是由面部左右两侧下颌骨的线性和角度尺寸差异引起的。下颌骨不对称对口腔外科医生和正畸医生具有重要意义，因为它直接影响个体的面部轮廓。
本研究旨在测量沙特阿拉伯吉赞地区6 - 8岁健康儿童混合牙列生长阶段下颌骨不对称的患病率及其波动情况。
本回顾性观察研究通过对390名混合牙列的健康儿童（182名男孩和208名女孩，年龄6 - 8岁）的曲面断层片测量下颌骨的线性不对称测量值。使用标准化数字化仪从曲面断层片中获取线性测量值。记录两组下颌骨测量值，同时对下颌第一磨牙发育进行主观评估。采用独立样本t检验评估两侧测量值之间的显著性，而单因素方差分析用于证明不同年龄组之间面部不对称的显著性。
本研究结果显示，下颌骨两侧在两个维度上存在显著统计学差异（p值≤0.05）：髁突和升支高度（p值 = 0.03）以及下颌骨长度（p值 = 0.04）。不对称指数显示大多数纳入研究的受试者没有不对称情况。然而，与其他三个线性测量值相比，许多7岁的参与者在髁突高度上存在下颌骨不对称（54.5%）。
在本研究局限性内，可以得出结论，生长发育期儿童存在显著的下颌骨不对称（主要是7岁儿童），然而，这种不对称在临床上仅有很少具有显著意义。因此，治疗计划应谨慎制定。
