Advances in material aspect MTA

Advances in material aspect

MTA

Ø  Mineral Trioxide Aggregate

Ø  Developed at Loma Linda University

Ø  By Dr. Mohammed Torabinejad

Ø  Initially developed as perforation repair & root end filling material .

Ø  Now finds wide application in endodontics

Material is
FDA approved & commercially available as
Pro Root MTA

Composition

Ø  Main molecules are calcium & phosphorous ions

Ø  Derived from components

   --tricalcium silicate ,

   --tricalcium aluminate ,

   --tricalcium oxide &

   --silicate oxide

Ø    Bismuth oxide imparts radio-opacity

Portland cements & MTA

Ø  Portland cements contain the same components as MTA except that MTA also contains bismuth oxide for radio-opacity