Vol. 7, Issue 2, Part G (2021)

Abstract: Persistent complete denture wearer patients many a time face a problem of instability of their mandibular complete denture due to high resorption rate of lower edentulous ridge in comparison to maxilla. When denture is fabricated in a zone where the forces of lip, cheeks, tongue and modulus are in balance, then the denture will be stable and retentive more effectively during function. This zone is called as neutral zone. It becomes a duty of a prosthodontist to effectively place the denture in neutral zone, which facilitates near normal function. This technique is used to minimize the displacing forces of the surrounding structures, which is achieved by functional impression technique used to solve the problem of lower denture instability.