[The polymerization temperature of Scutan, Palavit 55 and Trim].

Synchronous temperature measurements with thermocouples in the coronal pulp and in temporary plastic crowns were undertaken in "in vitro" tests which were very similar to "in vivo" conditions. 1. The plastics Scutan and Palavit 55 used in connection with Frasaco strip crowns irreversibly damaged the coronal pulp during the polymerization process because the polymerization temperature was as high as 46C. 2. The plastic Trim used in connection with Frasaco strip crowns produced temperatures as high as 39 C in the coronal pulp. 3. The temperature in the coronal pulp dropped to 35 C when Palavit 55 was used together with an alginate cast.