Over 20 years ago, dr. Torabinejad, who was the principle investigator of the dental applications of mineral trioxide aggregate (MTA) provided a clinically focused reference detailing the properties and uses of MTA. Today, it is the preferred material used by endodontists because of its superior properties such as its seal and biocompatibility that significantly improves outcomes of endodontic treatments. Pulp capping, apexification, repair of root perforations and root-end filling are commonly described clinical procedures to seal the pathway of communication between the root canal system and the external surface of the tooth. The application of MTA was first described as being achieved with aid of plastic or metal spatulas. However, this method was proved inefficient.
It was not until the arrival of carrier instruments dedicated to aid in the placement of MTA, that the situation improved. A real game changer in this field was introduced by Produits Dentaires. Its Micro-Apical Placement (MAP) System offers different application points for every clinical situation. The Intro Kit and the Universal Kit are for orthograde obturation and the Surgical Kit for retrograde obturation. New NiTi Memory Shape tips can be manually shaped to any required curvature. After autoclave sterilisation, the needle returns to its initial shape. With the use of the MAP System, proper placement of MTA has become an easy task for every dentist.
“MTA placement with the Produits Dentaires MAP System” by dr Mauro Armato
Vital pulp therapy has become more popular in recent years. Calcium hydroxide has been the most common material for pulp capping, but MTA has shown even better results in biocompatibility and outcome. Cases with large carious pulp exposure can be treated successfully with partial pulpotomy and MTA as a capping agent, keeping teeth vital.
In order to prevent extrusion of root canal filling material in immature teeth with open apices, MTA is used as an apical plug. The results of many studies have shown that MTA induced apical hard-tissue formation more often and its use was associated with less inflammation than with other test materials.
Accidental perforation of the pulp chamber or of the root canal significantly changes the prognosis of the tooth. Perforation repair with a biocompatible sealing material such as mineral trioxide aggregate may save compromised teeth.
MTA is the material with the most favourable outcome as a root-end filling material for apical surgery and has been associated with significantly less inflammation, cementum formation and regeneration of the periradicular tissue.
The article was based on the paper “MTA placement with the Produits Dentaires MAP System” by dr Mauro Armato. The original version with the documentation is available on our e-Learning platform.