Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ordu University, Ordu, 52200, Turkey.
Computer Science and Engineer, Department of Computer Programming, Vocational School of Technical Sciences, Ordu University, Ordu, Turkey.
BMC Oral Health. 2023 Jul 7;23(1):457. doi: 10.1186/s12903-023-03162-0.
This is the first study to report both cortical and trabecular bone evaluation of mandibles in bruxers, within the knowledge of the authors. The purpose of this study was to evaluate the effects of bruxism on both the cortical and the trabecular bone in antegonial and gonial regions of the mandible, which is the attachment of the masticatory muscles, by using panoramic radiographic images.
In this study, the data of 65 bruxer (31 female, 34 male) and 71 non-bruxer (37 female, 34 male) young adult patients (20-30 years) were evaluated. Antegonial Notch Depth (AND), Antegonial-Index (AI), Gonial-Index, Fractal Dimension (FD) and Bone Peaks (BP) were evaluated on panoramic radiographic images. The effects of the bruxism, gender and side factors were investigated according to these findings. The statistical significance level was set atP ≤ 0.05.
The mean AND of bruxers (2.03 ± 0.91) was significantly higher than non-bruxers (1.57 ± 0.71; P < 0.001). The mean AND of males was significantly higher than females on both sides (P < 0.05). The mean AI of bruxers (2.95 ± 0.50) was significantly higher than non-bruxers (2.77 ± 0.43; P = 0.019). The mean FD on each side was significantly lower in bruxers than in non-bruxers (P < 0.05). The mean FD of males (1.39 ± 0.06) was significantly higher than females (1.37 ± 0.06; P = 0.049). BP were observed in 72.5% of bruxers and 27.5% of non-bruxers. The probability of existing BP, in bruxers was approximately 3.4 times higher than in non-bruxers (P = 0.003), in males was approximately 5.5 times higher than in females (P < 0.001).
According to the findings of this study, the morphological differences seen in cortical and trabecular bone in the antegonial and gonial regions of the mandible in bruxers can be emphasized as deeper AND, higher AI, increased of existing BPs, and lower FD, respectively. The appearance of these morphological changes on radiographs may be useful for indication and follow-up of bruxism. Gender is an effective factor on AND, existing BP and FD.
这是第一项报告磨牙症患者下颌骨皮质和小梁骨评估的研究。本研究的目的是通过全景影像学图像评估磨牙症对下颌角和下颌支附着的咀嚼肌附着处的皮质和小梁骨的影响。
本研究评估了 65 名磨牙症患者（31 名女性，34 名男性）和 71 名非磨牙症患者（37 名女性，34 名男性）的年轻成年患者（20-30 岁）的数据。在全景影像上评估了下颌角切迹深度（AND）、下颌角指数（AI）、下颌支指数、分形维数（FD）和骨峰（BP）。根据这些发现，研究了磨牙症、性别和侧别因素的影响。统计显著性水平设为 P≤0.05。
磨牙症患者的平均 AND（2.03±0.91）显著高于非磨牙症患者（1.57±0.71；P<0.001）。男性两侧的平均 AND 均显著高于女性（P<0.05）。磨牙症患者的平均 AI（2.95±0.50）显著高于非磨牙症患者（2.77±0.43；P=0.019）。磨牙症患者两侧的平均 FD 均显著低于非磨牙症患者（P<0.05）。男性（1.39±0.06）的平均 FD 显著高于女性（1.37±0.06；P=0.049）。磨牙症患者中 72.5%观察到 BP，而非磨牙症患者中 27.5%观察到 BP。磨牙症患者中存在 BP 的概率大约是非磨牙症患者的 3.4 倍（P=0.003），男性大约是非女性的 5.5 倍（P<0.001）。
根据本研究的结果，磨牙症患者下颌角和下颌支皮质和小梁骨的形态学差异可以分别强调为更深的 AND、更高的 AI、增加 BP 的存在和更低的 FD。这些形态变化在射线照片上的出现可能有助于磨牙症的指示和随访。性别是 AND、存在 BP 和 FD 的有效因素。
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