The Asymmetry of the Mandible in Patients with Unilateral Temporomandibular Joint Disc Displacement Confirmed by Magnetic Resonance Imaging.

IF 1.4 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Acta Stomatologica Croatica Pub Date : 2023-06-01 DOI:10.15644/asc57/2/7
Tomislav Badel, Stevo Vojnović, Dino Buković, Dijana Zadravec, Sandra Anić Milošević, Mia Smoljan Basuga, Matea Prenc, Ivana Savić Pavičin
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Abstract

Objectives: The study aimed to determine the relationship between the mandibular asymmetry index according to Kjellberg between patients with painful unilateral anterior disc displacement (DD) and asymptomatic volunteers without disc displacement. Vertical measurements were performed on a panoramic single-image radiograph, and the disc status was confirmed by magnetic resonance imaging (MRI).

Material and methods: Two groups of subjects were retrospectively selected, 40 patients (the overall mean age was 35.5 years; 75% female) with temporomandibular disorder symptoms confirmed by RDC/TMD axis I and manual functional analysis. Unilateral DD was determined by MRI. A comparative group of asymptomatic volunteers (20 dental students with a mean age of 23.4 years; 72% female) had the physiological position of the disc determined by MRI. The vertical asymmetry of the condyle was determined by the method of Kjellberg et al. The symmetry of the gonial angle of the mandible was also measured.

Results: A comparison of the mean of the asymmetry index between patients (average 90.89±7.08%) and asymptomatic volunteers (mean 95.86±4.44%) showed a statistically significant difference (p=0.0029). There was no difference (p=0.088) in gonial angle symmetry between the patients (mean 96.48±2.96°) and the asymptomatic volunteers (mean 97.52±2.31°). The distribution of the presence of individual DD diagnoses (partial and total displacement with reduction, displacement without reduction) in patients diagnosed with asymmetry of the mandible was without statistical significance (p>0.05).

Conclusion: This study actually points to the asymmetry of the mandible as a potential morphological risk of anterior DD.

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磁共振成像证实单侧颞下颌关节盘移位患者下颌骨不对称。
目的:本研究旨在根据Kjellberg测定疼痛性单侧前椎间盘移位(DD)患者与无椎间盘移位的无症状志愿者下颌不对称指数之间的关系。在全景单图像x线片上进行垂直测量,并通过磁共振成像(MRI)确认椎间盘状态。材料与方法:回顾性选择两组患者,40例(总平均年龄35.5岁;75%为女性),经RDC/TMD轴I和手动功能分析证实有颞下颌紊乱症状。单侧DD由MRI确定。一组无症状志愿者(20名牙科学生,平均年龄23.4岁;72%女性)通过MRI确定了椎间盘的生理位置。采用Kjellberg等人的方法测定髁突的垂直不对称性。下颌骨角的对称性也被测量。结果:患者不对称指数均值(平均90.89±7.08%)与无症状志愿者不对称指数均值(平均95.86±4.44%)比较,差异有统计学意义(p=0.0029)。患者(平均96.48±2.96°)与无症状者(平均97.52±2.31°)的角对称性差异无统计学意义(p=0.088)。在诊断为下颌骨不对称的患者中,个体DD诊断(部分移位、全移位有复位、移位无复位)的存在分布无统计学意义(p>0.05)。结论:这项研究实际上指出下颌骨的不对称是前路DD的潜在形态学风险。
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来源期刊
Acta Stomatologica Croatica
Acta Stomatologica Croatica DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
2.40
自引率
28.60%
发文量
32
审稿时长
12 weeks
期刊介绍: The Acta Stomatologica Croatica (ASCRO) is a leading scientific non-profit journal in the field of dental, oral and cranio-facial sciences during the past 44 years in Croatia. ASCRO publishes original scientific and clinical papers, preliminary communications, case reports, book reviews, letters to the editor and news. Review articles are published by invitation from the Editor-in-Chief by acclaimed professionals in distinct fields of dental medicine. All manuscripts are subjected to peer review process.
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