The best way to find centric relation for complete dentures

The most reproducible and reliable way of finding centric relation (retruded axis position) is by using a central bearing apparatus.

This is where a central bearing point is fixed to one arch and a plate is fixed parallel to the opposing arch. The only point of contact between the upper and lower arches is the central bearing point. The patient scribes a mark on the plate by moving the mandible forwards and backwards and side to side. The scribed mark often looks like an arrow (gothic arch), the tip of which is centric relation. This position is recorded by fixing the upper and lower plates together using an occlusal registration material.