Modified record base featuring postpalatal seal using silicone bite registration material.

This article describes a simple method of fabricating a stable and retentive record base to ensure an accurate registration of the maxillomandibular relationship. A postpalatal seal is established along the posterior end of the record base on the definitive cast using a silicone bite registration material to create a border seal along with the lip/cheek draping actions and to evaluate adequacy of the post dam.