Abdel-Fattah R A
Todays FDA. 1989 Nov;1(3):1C-3C.
Controversy exists over the value of the TMJ condylar position in the fossa. Many clinicians associate the concentric position to the normal individuals and the retruded position to the dysfunctional condition. It is also recommended that therapeutically, the condyle should be placed on the posterior slope of the articulating eminence. Different groups of investigators claim that the condylar position, centric, retruded or protruded has little or no value and is not correlated with dysfunctional situations. This controversy is attributed to the inconsistency of research methodology. Using a large number of subjects, defining age and sex, careful selection of subject, using tomographic analysis with similar section locations and excluding individuals with disturbed occlusal condition are recommended for a research of this type. The conclusion is that the condylar position is an end product of many dynamic changes such as growth and remodeling, functional matrix activities, occlusal alteration, functional adaptation and individual variation. It is suggested that diagnosis and treatment of TMJ disorders should not be based solely on the radiographic position of the condyle. Consideration of general body conditions is an essential part of total patient management. TM joint condylar position has been explained as the position of the mandibular condyles in the glenoid fossa when teeth are in maximum intercuspation. Clinicians have based their diagnosis and treatment of temporomandibular joint disorder on this position. The optimal condylar position has been a controversial matter in dentistry for many years. The purpose of this paper is to review the literature pertaining to condylar position and to discuss its significance in clinical practice.
颞下颌关节（TMJ）髁突在关节窝中的位置价值存在争议。许多临床医生将同心圆位置与正常个体联系起来，而将后缩位置与功能障碍状态联系起来。还有人建议，在治疗上，髁突应置于关节结节的后斜坡上。不同的研究小组称，髁突的位置，无论是正中、后缩还是前突，价值不大或毫无价值，且与功能障碍情况无关。这种争议归因于研究方法的不一致。对于此类研究，建议使用大量受试者、明确年龄和性别、仔细选择受试者、采用截面位置相似的断层分析，并排除咬合状况紊乱的个体。结论是，髁突位置是生长与重塑、功能基质活动、咬合改变、功能适应和个体差异等多种动态变化的最终产物。有人提出，颞下颌关节紊乱病的诊断和治疗不应仅基于髁突的影像学位置。考虑全身状况是患者整体管理的重要组成部分。颞下颌关节髁突位置被解释为牙齿处于最大牙尖交错位时下颌髁突在关节窝中的位置。临床医生一直基于这个位置对颞下颌关节紊乱病进行诊断和治疗。多年来，最佳髁突位置在牙科领域一直是个有争议的问题。本文的目的是回顾与髁突位置相关的文献，并讨论其在临床实践中的意义。
