Four basic impression philosophies proposed over years for impression making are: mucostatic, mucocompressive, minimal pressure, and selective-pressure impressions [1-4].
Mucostatic impression technique (1938) records denture-bearing tissues in static, undisturbed form by using readily flowing material such as impression plaster.
Impression making is still widely debatable area of complete denture construction.8 The complete denture impression procedures are essential in that they impart a border seal with proper extensions that result in a stable and retentive denture base.9 In addition, several techniques for complete denture impressions are employed subject to the clinical situation, grouped as, mucostatic
, mucocompressive and selective pressure.
2a, 2b, 2c]] A full-coverage mucostatic
mandibular impression was made by using stock impression trays and irreversible hydrocolloid (Tropicalgin, Zhermack, Italy), which was poured with type 3 dental stone (Denstone, Zhermack, Italy).
Concept of mucostatic was introduced in this era wherein the best possible adaptation of impression material to tissues to capture them in their passive undistorted form was emphasized.
Mucostatic concept record the mucosa in its static, undisturbed form (supported by underlying basal bone).
or passive impression was first proposed by Richardson and later popularized by Henry Page.
A Brief Review: Mucostatic theory: In a brochure published by Hary L.
These techniques have been classified by different authors as functional, mucostatic, mucocompressive, selective pressure, minimal pressure etc.
* Mucostatic impression technique, which aims to achieve support from the other firm areas of the arch and maximizes retention.
* Two part impression technique: Mucostatic and mucodisplacive combination (6)
ZOE is mucostatic
and easily adopts to the soft tissues due to water based system.