Clinical outcome of the altered cast impression procedure compared with use of a one-piece cast.

Statement Of The Problem: An altered cast impression procedure to improve the support of distal extension removable partial dentures is widely taught, but not often used in dental practice.

Purpose: The purpose of this study was to determine the efficacy of an altered cast compared to a one-piece cast with regard to base support, abutment health, and patient comfort over time.

Material And Methods: Seventy-two patients receiving a mandibular bilateral distal extension removable partial denture were assigned randomly for treatment using either a one-piece or an altered cast.

The influence of tray type and other variables on the palatal depth of casts made from irreversible hydrocolloid impressions.

Statement Of Problem: There are conflicting data regarding the effect of various factors on the palatal depth of casts made from irreversible hydrocolloid impressions.

Purpose: This study examined the influence of tray type, water temperature, pouring technique, and stone expansion on the palatal depth of casts.

Material And Methods: Irreversible hydrocolloid impressions were made of a model under simulated oral conditions.