Discrepancies in the occlusion of a denture can be clearly detected from:
Clinical Remounting: 

It consists of remounting the finished denture on an articulator by using new inter-occlusal records in the patient's mouth.
The purpose of clinical remounting is to accommodate the errors made during centric relation records.

Advantages: 

It reduces patient participation.
It permits the dentist to see better what he/she is doing.
It provides a stable base, eliminating resilient tissues.
Absence of saliva makes markings more accurate.
Observation of the denture in the mouth
Masticatory efficiency
Clicking sounds at temporomandibular joint
Remounting procedures of the denture