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The article describes a simple, quick and corrective technique for making the preliminary impression. It records the extensions better as compared to the impressions made using only impression compound. This technique is accurate and gives properly extended custom tray. Any deficiencies seen in the compound primary impression are corrected using this technique hence, this technique is called as a “corrective primary impression technique”.
Failure to use an accurately extended custom tray for making final impression eliminates the necessary information regarding the anatomy of the basal seats available for the dentures [1-5]. For the fabrication of an accurate custom tray a correctly recorded preliminary impression plays an important role.
The objectives of the primary impression are to record all the areas to be covered by the intaglio surface of the dentures and the adjacent landmarks with an impression material which is accurate and incorporates the minimum tissue displacement .
Several authors [1-4] advocate different types of preliminary impression techniques. Some have suggested the use of alginate in an oversized perforated tray, where as others recommended use of impression compound by using a stock tray [2-4]. Boucher recommended the use of compound tray for border molding procedure .
This article presents a simple, quick, and reliable technique to make preliminary impression for edentulous patients.
The article describes a simple, quick and corrective technique for making the preliminary impression. The defects, which are met in the primary impression with compound, can be corrected with the use of alginate hence this technique can be called as “corrective primary impression technique”. As this is a new technique, its usefulness and relevance needs to be evaluated further.