Define Mineral Trioxide Aggregate - Materials for Root End Filling

• Widely used
• Favorable biocompatibility
• Superior sealing qualities when compared to S-EBA and amalgam
• Tissue regeneration (dentin, PDL, and Cementum) "most imp. Advantage"
• Unique, has different physical properties: very fine, gray-colored powder, mixed with a sterile liquids (saline or LA solution) on sterile glass slab

• Surgical area must be kept dry, don't irrigate prior closure " suturing"
• Recently introduced is white MTA with les potential for staining
• If it binds the root end walls it can cause root fracture, so put a small amount inside the prepared canal.