The custom trays are fabricated so that the final impression of the patient’s edentulous mouth can be taken accurately with proper border extension of the complete denture and with correct pressure on the soft tissue.

The wax spacer of specific thickness in special tray is provided to accommodate the impression material being used to record the soft tissue state. Stoppers in custom tray prevent it to sink beyond a limit into the soft tissues, so that the impression material remains of a specific thickness to record proper functional or static state.