Ryakhovsky A N, Losev F F, Altynbekov K D, Vykhodtseva M A
Central Research Institute of Dentistry and Maxillofacial Surgery of the Ministry of Health of Russia, Moscow, Russia.
Asfendyarov Kazakh National Medical University, Almaty, Kazakhstan.
Stomatologiia (Mosk). 2022;101(3):49-60. doi: 10.17116/stomat202210103149.
Was determination of TMJ anatomical and functional parameters in patients without clinical manifestations of TMJ dysfunction and analysis of possible relationships between them.
TMJ anatomical parameters of 25 volunteers (22-27 years old) without TMJ dysfunction, malocclusion and more than one tooth adentia were determined on CT scans and lab teeth scans: inclination of the distal slopes of the articular eminence (DS AE), height and width of the condyles, height of AE, inclination of the longitudinal axes of the condyles; as well as functional parameters of LJ movements: horizontal condylar inclination (HCI) during protrusion and laterotrusion, lateral condylar inclination during protrusion and laterotrusion, immediate side shift, incisor and canine guidance, and correlations between them were evaluated.
The majority of the TMJ anatomical parameters are almost equal by mean values on the right and left sides. The main TMJ functional parameters on the right and left sides also have similar values but much higher variability, asymmetry and unpredictability. The existing anatomical asymmetry of the DS AE is compensated by articular discs, which makes HCI more symmetrical.
Protrusion movements have a higher probability of reproduction by mechanical articulators while laterotrusion movements have a very low probability. The existence of relationship between the inclination of DS AE and HCI, between HCI and the incisor guidance, between the inclination of DS AE and the incisor guidance is questionable. The conducted research proves the weakness or complete absence of correlation between them.
确定无颞下颌关节功能障碍临床表现患者的颞下颌关节解剖和功能参数，并分析它们之间可能存在的关系。
在CT扫描和实验室牙齿扫描上确定25名无颞下颌关节功能障碍、错牙合且缺牙不超过一颗的志愿者（22 - 27岁）的颞下颌关节解剖参数：关节结节远中斜面（DS AE）的倾斜度、髁突的高度和宽度、关节结节的高度、髁突纵轴的倾斜度；以及下颌运动的功能参数：前伸和侧方运动时的水平髁突倾斜度（HCI）、前伸和侧方运动时的外侧髁突倾斜度、即时侧方移位、切牙和尖牙引导，并评估它们之间的相关性。
大多数颞下颌关节解剖参数的左右两侧平均值几乎相等。颞下颌关节左右两侧的主要功能参数也有相似的值，但变异性、不对称性和不可预测性要高得多。DS AE现有的解剖不对称性由关节盘补偿，这使得HCI更对称。
前伸运动由机械咬合器再现的可能性较高，而侧方运动的可能性非常低。DS AE倾斜度与HCI之间、HCI与切牙引导之间、DS AE倾斜度与切牙引导之间存在关系这一点值得怀疑。所进行的研究证明它们之间相关性较弱或完全不存在。
