In vitro evaluation of a Ceramicrete-based root-end filling material.
Ceramicrete is an impervious inorganic binder widely used for encapsulating radioactive and hazardous wastes. This study evaluated the feasibility of using a radiopaque Ceramicrete-based material for root-end fillings. Apical seals of root-end preparations filled with Super EBA (Harry J. Bosworth Co, Skokie, IL), White ProRoot MTA (Dentsply Tulsa Dental Specialties, Tulsa, OK), or Ceramicrete-D were evaluated using a computerized fluid filtration approach after the fillings were immersed in phosphate-containing fluid (PCF). The Ceramicrete-D fillings exhibited significantly (P < 0.05) better seals than the other two commercially available, frequently advocated root-end-filling materials. Scanning electron microscopy and x-ray diffraction of Ceramicrete-D after setting revealed a relatively nonporous KMgPO4.6H2O matrix that binds other incompletely reacted and new reaction phases such as CaHPO4.2H2O. Polished dentin slabs filled with Ceramicrete-D and immersed in PCF for 72 hours revealed depositions of acicular-shaped, apatite-like crystallite clusters on the material surface as the pH of the PCF increased with immersion time. The experimental Ceramicrete-based material is potentially bioactive in the presence of PCF.
Tay
Kelvin C Y
KC
University of Toronto, Toronto, Ontario, Canada.
Loushine
Bethany A
BA
Oxford
Cindy
C
Kapur
Rishi
R
Primus
Carolyn M
CM
Gutmann
James L
JL
Loushine
Robert J
RJ
Pashley
David H
DH
Tay
Franklin R
FR
D017607:Aluminum Compounds; D017610:Calcium Compounds; D003763:Dental Leakage / Q000517:prevention & control; D017220:Dentin-Bonding Agents; D004338:Drug Combinations; D005240:Feasibility Studies; D005374:Filtration; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010087:Oxides; D012184:Retrograde Obturation / Q000379:methods*; D012387:Root Canal Filling Materials; D017640:Silicates; D016369:Smear Layer
D017607:Aluminum Compounds; D017610:Calcium Compounds; D017220:Dentin-Bonding Agents; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C526968:ceramicrete; C086631:mineral trioxide aggregate; C084074:Super EBA