title: [Study on the crystal heat treatment schedule of Plat-II castable ceramic].
abstract: OBJECTIVE
  To establish the crystal heating schedule of Plat-II castable ceramic materials.
  
  
  METHODS
  This study first identified the thermal limits of Plat-II castable ceramic crystallization basing on DTA exotherm analysis, then the crystal density of various heating schedule was observed by scanning electron microscope.
  
  
  RESULTS
  The efficient crystal heating schedule of Plat-II castable ceramic was established: The temperature was increased from the room temperature to 620 degrees C with the speed of 10 degrees C/min, kept 20 min, then was increased continually to 670 degrees C with the speed of 5 degrees C/min, and kept 30 min.
  
  
  CONCLUSIONS
  The establishment of the crystal heat treatment schedule of Plat-II castable ceramic will become the basis for the further study.
authors.affiliation: College of Stomatology, West China University of Medical Sciences.
authors.forename: W
authors.initials: W
authors.lastname: Huang
authors.forename: Y
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D003460:Crystallization; D003735:Dental Casting Technique; D003776:Dental Porcelain / Q000737:chemistry*; D006358:Hot Temperature; D013696:Temperature; D013816:Thermodynamics
chemical_list: D003776:Dental Porcelain