即指上下颌牙齿在静止颌位时的接触关系。它在很大程度上反映了颌骨、牙齿颌关节、咀嚼肌的相互生理结构、功能关系。在口腔医学中,是修复学、整畸学、整形学、牙周病学等临床工作中不可缺少的一项指标。但是,关系有别于其它临床体征和指标,其诊断和处理具有一定的困难。下面试运用唯物辩证法的观点和原理谈谈在诊断和处理关系时应注意的问题。  refers to the contact between mandibular teeth in resting jaw position. It largely reflects the jaw, the jaw joints of the teeth, the physiological structure of masticatory muscles, functional relationships. In stomatology, it is an indispensable indicator in the clinical work of repair, orthodontics, orthopedics and periodontics. However, the relationship is different from other clinical signs and indicators, its diagnosis and treatment have some difficulties. The following test the use of materialist dialectics point of view and principles to talk about in the diagnosis and treatment of relations should pay attention to the problem.