What is the composition of mineral trioxide aggregate?

Mineral trioxide aggregate (MTA) is composed of Portland cement, with 4:1 addition of bismuth oxide added so that the material can be detected on a radiograph. The cement is made up of calcium, silicon and aluminium. The main constituent phases are tricalcium and dicalcium silicate and tricalcium aluminate.

How does mineral trioxide aggregate work?

The MTA will provide structure and strength to the tooth by replacing the resorbed tooth structure. In external resorption, after root canal therapy is performed, the flap is raised over the tooth and the defect removed from the root surface with a round bur.

What are the advantages of MTA?

MTA has the advantage of being less soluble than calcium hydroxide and offers an enhanced seal due to its setting expansion which hermetically seals the pulp space, preventing bacterial contamination from the outside.

What is the pH of mineral trioxide aggregate?

12.5
Hydrated MTA has an initial pH of 10.2, which rises to 12.5 (similar to calcium hydroxide) 3 hours after mixing and following setting. The high pH is theorized to be responsible for the antimicrobial action and biological activity of the material.

Is MTA a liner or a base?

TheraCal LC (BISCO Dental Products) is a liner, ProRoot MTA (DENTSPLY Tulsa Dental Specialties) is an endodontic reparative material, Biodentine (Septodont) is a base, and Ceramir (Doxa) is a cement; all of these materials have the potential to seal dentin, stop microleakage, almost eliminate sensitivity, and even …

How do you make a mineral trioxide aggregate?

What is MTA Pulpotomy?

MTA may be used as an alternative pulpotomy agent in immature teeth with pulp exposure to stimulate pulp healing with dentin bridge formation and complete root formation. But, discoloration following MTA pulpotomy appears as a major clinical complication.

What is MTA dental material?

Abstract. Mineral trioxide aggregate (MTA), composed mainly of tricalcic silicate, tricalcic alluminate, bismuth oxide, is a particular endodontic cement. It is made of hydrophilic fine particles that harden in the presence of dampness or blood.

Who introduced mineral trioxide aggregate?

Mahmoud Torabinejad
Mahmoud Torabinejad at Loma Linda University and his coinventor Dean White obtained two US patents [89, 90] for a Portland cement-based endodontic material, which became known as mineral trioxide aggregate (MTA).

Who invented mineral trioxide?

Mineral trioxide aggregate (MTA) was invented in the mid-1990s at Loma Linda University, USA, with the aim of introducing a material for use as a root-end filler that would set and develop its properties in the presence of moisture.

When MTA is used in Pulpotomies it is known to induce?

MTA pulpotomy was assessed unsuccessfully in two fractured central incisors. Severe discoloration in the crowns was present in all 6 cases. MTA may induce pulp healing with dentin bridge formation and prevent necrosis at long-term periods in most of the pulpotomy cases.