title: Sealing ability of a new experimental "cold ceramic" material compared to glass ionomer.
abstract: OBJECTIVE
  The purpose of this study was to compare the sealing ability of a new experimental material named "cold ceramic" with glass ionomer using an electrochemical method.
  
  
  METHODS
  Forty extracted human teeth were used in this study. The crowns were removed at the cemento-enamel junction. The roots were prepared, the apical 3 to 4 mm of each root was resected, and a class 1 cavity of 2 mm depth was prepared. After application of nail polish to the external surface of the roots, the samples were randomly divided into two groups, each with 20 roots. Each sample was filled with one of the two materials. After 24 hours, to allow complete setting, the roots were immersed in normal saline solution for 10 days. Microleakage was measured by an electrochemical method.
  
  
  RESULTS
  The results indicated that there is a statistically significant difference in the microleakage between the two materials (p = 0.0001), with the cold ceramic providing a better seal than the glass ionomer.
  
  
  CONCLUSIONS
  Cold ceramic has proper sealing ability and reduced initial setting time that demonstrate its potential as a root end filling material.
authors.affiliation: Shahid Sadoughi Dental School, Yazd, Iran. jalil_modaresi@yahoo.com
authors.forename: Jalil
authors.initials: J
authors.lastname: Modaresi
authors.forename: Hossein
authors.initials: H
authors.lastname: Aghili
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D002516:Ceramics / Q000737:chemistry*; D006801:Humans; D010895:Pit and Fissure Sealants / Q000737:chemistry*; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D000180:Acrylic Resins; D010895:Pit and Fissure Sealants; D012387:Root Canal Filling Materials; C015897:glass ionomer; D012822:Silicon Dioxide