Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia; Department of Oral Radiology, Faculty of Dentistry, Ibb University, Ibb, Yemen.
Department of Oral Medicine, Faculty of Dentistry, Al-Wataniya Private University, Hama, Syria.
Oral Surg Oral Med Oral Pathol Oral Radiol. 2021 Oct;132(4):465-474. doi: 10.1016/j.oooo.2020.12.017. Epub 2020 Dec 26.
This cross-sectional comparative study investigated the effects of qat chewing habit on the radiographic bone density (RBD) and trabecular microstructure of temporomandibular joint condyles using cone beam computed tomography (CBCT).
In total, 85 systemically healthy Yemeni males were included and divided into qat chewers (QCs; n = 41); and non-qat chewers (NQCs; n = 44). The participants responded to a structured questionnaire and underwent standardized clinical examination and CBCT scanning of the temporomandibular joint. Measurements of RBD and trabecular microstructure (trabecular thickness, trabecular separation, bone volume fraction, and fractal dimension) were performed. Statistical significance was established at P ≤ .05.
No statistically significant differences were found between QCs and NQCs in RBD or trabecular microstructure. The mean standard deviations and maximum values of trabecular separation on the nonchewing side for QCs were significantly lower compared to the corresponding values for NQCs (0.60 and 2.68 for QCs vs 0.72 and 3.05 for NQCs; P = .025 and .05, respectively). A comparison between chewing and nonchewing sides in QCs revealed no significant differences.
Qat chewing habit induces insignificant changes in condylar RBD and trabecular microstructure as detected by CBCT. Further studies using advanced radiographic techniques are warranted.
本横断面对比研究使用锥形束 CT（CBCT）调查了嚼食恰特草习惯对颞下颌关节髁突的放射密度（RBD）和小梁微观结构的影响。
共纳入 85 名系统性健康的也门男性，分为嚼食恰特草者（QC；n=41）和非嚼食恰特草者（NQC；n=44）。参与者回答了一份结构化问卷，并接受了标准化的临床检查和颞下颌关节 CBCT 扫描。对 RBD 和小梁微观结构（小梁厚度、小梁分离、骨体积分数和分形维数）进行了测量。统计学意义的显著性设定为 P≤0.05。
QC 和 NQC 之间的 RBD 或小梁微观结构没有统计学上的显著差异。与 NQC 相比，QC 的非咀嚼侧的小梁分离的平均值标准偏差和最大值显著更低（QC 为 0.60 和 2.68，NQC 为 0.72 和 3.05；P=0.025 和 0.05）。QC 咀嚼侧和非咀嚼侧之间的比较没有发现显著差异。
CBCT 检测到，嚼食恰特草习惯对髁突 RBD 和小梁微观结构的诱导变化不明显。需要使用更先进的放射技术进行进一步的研究。
