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The movement of one condyle during sagittal axis rotation is best described by the condyle moving posteriorly towards the centric occlusal position, which involves the position known as the centric relation. In this scenario, RCP (Retruded Contact Position), is defined as the maxillary and mandibular occlusal surfaces in a retruded position.

When one condyle rotates about the sagittal axis, that specific condyle will typically move in a manner that allows for excursions and adjustments as the mandible moves. The relationship to RCP indicates that the condyle may shift slightly in its trajectory, especially in movements involving opening and closing of the jaw.

Focusing on how condylar movement relates to occlusion, as the mandible moves through its arc of rotation, the condyle does not remain static in RCP, nor does it purely move anteriorly or inferiorly in this context. Instead, it occupies a dynamic position that reflects the changes in dental occlusion and jaw positioning.

In summary, the most relevant characterization of one condyle’s movement during sagittal rotation is that it adjusts its position relative to RCP, reflecting the complex interplay between the jaw and dental occlusion mechanics in response to functional demands.