OWN - Quintessenz Verlags-GmbH CI - Copyright Quintessenz Verlags-GmbH OCI - Copyright Quintessenz Verlags-GmbH TA - Int J Prosthodont JT - The International Journal of Prosthodontics IS - 1942-4426 (Electronic) IS - 0893-2174 (Print) IP - 4 VI - 9 PST - ppublish DP - 1996 PG - 367-373 LA - en TI - The effect of using custom or stock trays on the accuracy of gypsum casts FAU - Rueda AU - Rueda FAU - Sy-Munoz AU - Sy-Munoz FAU - Naylor AU - Naylor FAU - Goodacre AU - Goodacre FAU - Swartz AU - Swartz CN - AB - This study examined the linear dimensional stability of nonaqueous elastomeric impressions made from stock and custom trays by measuring casts derived from those impressions at 1 hour, 1 day, and 1 week. There was a small statistical difference among casts produced from stock versus custom trays compared to the master model. However, there was no significant difference in casts produced from impressions poured at 1 hour, 1 day, and 1 week. A custom tray with a 2.0 to 2.5 mm tray spacing had the least amount of variation, yet the differences between custom and stock trays may not be clinically significant. AID - 848014