Lyu Yun-Song, Li Zhao-Hui
Department of Stomatology, Guangzhou Huadu Hospital Affiliated to Guangdong Medical University, Guangzhou Huadu Maternal and Children Health Hospital (Huzhong hospital). Guangzhou 510800, Guangdong Province, China. E-mail:
Shanghai Kou Qiang Yi Xue. 2022 Dec;31(6):653-656.
To analyze the cone beam CT (CBCT) features in patients with temporomandibular disorder syndrome (TMD) and unilateral chewing.
A total of 80 patients with temporomandibular disorder syndrome (TMD) and unilateral chewing were selected as the experimental group, and 40 healthy volunteers were selected as the control group. Both groups underwent bilateral CBCT scans to obtain three-dimensional images, and the temporomandibular joint(TMJ) parameters were measured and compared between the two groups. The data were analyzed performed using SPSS 22.0 software package.
There was no significant difference in bilateral TMJ parameters in the control group(P＞0.05). The inner and outer diameter of the condyle on the unilateral chewing side of the experimental group was significantly lower than that on the non-unilateral chewing side, and the condyle horizontal angle and condyle height were significantly higher than those on the non-unilateral chewing side(P＜0.05). The anteroposterior diameter of the condyle, the inner and outer diameter of the condyle, the horizontal angle of the condyle, the vertical angle of the condyle, the intra-articular space and the post-articular space of the experimental group were significantly lower than those of the control group, while the pre-articular space was significantly higher than that of the control group(P＜0.05). The anteroposterior diameter and retro-articular space of the condyle on the non-unilateral chewing side were significantly lower than those in the control group, and the inner and outer diameters of the condyle were significantly higher than those on the unilateral chewing side, and the height of the condyle was significantly lower than that on the unilateral chewing side(P＜0.05).
Patients with TMD syndrome and unilateral chewing have abnormal changes in bilateral TMJ structure, showing medial and posterior displacement of the condyle on the unilateral chewing side and a compensatory increase in the pre-articular space on the non-unilateral chewing side.
分析颞下颌关节紊乱综合征（TMD）伴单侧咀嚼患者的锥形束CT（CBCT）特征。
选取80例颞下颌关节紊乱综合征（TMD）伴单侧咀嚼患者作为实验组，选取40例健康志愿者作为对照组。两组均进行双侧CBCT扫描以获取三维图像，并测量和比较两组的颞下颌关节（TMJ）参数。使用SPSS 22.0软件包进行数据分析。
对照组双侧TMJ参数差异无统计学意义（P＞0.05）。实验组单侧咀嚼侧髁突的内径和外径明显低于非单侧咀嚼侧，髁突水平角和髁突高度明显高于非单侧咀嚼侧（P＜0.05）。实验组髁突的前后径、髁突的内径和外径、髁突水平角、髁突垂直角、关节内间隙和关节后间隙明显低于对照组，而关节前间隙明显高于对照组（P＜0.05）。非单侧咀嚼侧髁突的前后径和关节后间隙明显低于对照组，髁突的内径和外径明显高于单侧咀嚼侧，髁突高度明显低于单侧咀嚼侧（P＜0.05）。
TMD综合征伴单侧咀嚼患者双侧TMJ结构存在异常改变，表现为单侧咀嚼侧髁突向内侧和后方移位，非单侧咀嚼侧关节前间隙代偿性增加。
