What is MTA in dentistry?

The mineral trioxide aggregate (MTA) is a dental material with biocompatibility properties to oral and dental tissues. MTA was developed for dental root repair in endodontic treatment and it is formulated from commercial Portland cement, combined with bismuth oxide powder for radiopacity.

How is MTA placed?

The MTA powder is mixed with sterile water, and the mixture is placed in contact with the exposure using a Dovgan carrier (Figure 2). Compress the mixture against the exposure site with a moist cotton pellet. Place a moist cotton pellet over the MTA and fill the rest of the cavity with a temporary filling material.

What is MTA in pulpotomy?

Mineral trioxide aggregate (MTA) has been used as an alternative agent to CH materials in direct pulp capping and pulpotomy treatments. CH is one of the major hydration products during setting reactions of MTA, and CH is soluble from MTA in decreasing rates over time.

What is MTA in pediatric dentistry?

Mineral trioxide aggregate (MTA), is unique endodontic cement that was initially introduced as a material for root perforation repair. Over the years its use has expanded to include versatile applications in the field of pediatric dentistry.

How long does it take for MTA to set?

It has been reported that MTA sets slowly approximately 3-4 hours in clinical conditions (3, 25). Long setting time of MTA can cause clinical problems.

Mineral trioxide Aggregate - MTA - restorative dentistry - Handwritten notes

How do you remove the MTA from a root canal?

Removal of MTA from dentin by applying 37% hydrochloric acid (HCl) to reduce microhardness and push-out bond strength.

Can MTA be used for pulp capping?

MTA is a new and biocompatible biomaterial used for dental practice. It has been proved to be an excellent material for repairing of root perforations, apexification, root-end filling, repairing of root resorption and pulp capping.

Is MTA used in primary teeth?

MTA as a pulpotomy agent has shown favorable results in case of primary molars. There is limited literature available regarding its use in primary incisors. However, the success of vital pulp therapy with MTA depends on proper case selection and technique of management of the tooth than the material itself.

Where is MTA used?

MTA is used for creating apical plugs during apexification, repairing root perforations during root canal therapy, treating internal root resorption, and pulp capping.

Does MTA dissolve?

Because MTA is alkaline in nature, it might interact with acids or chemicals and could disintegrate.

What does MTA do to pulp?

The researchers have reported that MTA induces proliferation of pulp cells,41, 42 it stimulates osteoblasts to release interleukins⁴ with formation of hard tissue,⁴³ and an interface with the dentin that is very similar in composition to the hydroxyapatite.

What is MTA pulp therapy?

MTA was used as pulp-capping material after partial pulpotomy to preserve the vitality of the pulpal tissues in two cases. Follow-up examinations revealed that the treatment was successful in preserving pulpal vitality and continued development of the tooth.

What is the minimum thickness for the placement of MTA for a direct pulp cap?

success, MTA results in more predictable dentin bridging and pulp health. 96 MTA (at least 1.5 mm thick) should cover the exposure and surrounding dentin followed by a layer of light cured resin-modified glass ionomer.

Is MTA a liner or a base?

MTA provides a higher incidence and faster rate of reparative dentin formation without the pulpal inflammation. MTA Plus material is also indicated for base and liner in vital pulp therapy. In root-end filling after apicoectomy, the anti-washout agent (chitosan or gelatin) is useful to prevent from MTA washout.

Does MTA bond to tooth?

Nowadays, the material that offers the best sealing characteristic in the field of endodontic treatment is the mineral trioxide aggregate (MTA), nevertheless, this material necessities an adhesive bonding agent to perfectly join to the dental surface.

What is MTA made of?

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.

Can we do obturation with MTA?

It is clear that MTA resists bacterial leakage to a higher degree than gutta-percha and sealer when used as an obturation material. These findings also demonstrate that the placement of MTA is technique-sensitive, and protocols for proper obturation and condensation must be observed.

How do you mix MTA dental?

Manipulation and setting reaction of MTA The MTA paste is obtained by mixing 3 parts of powder with 1 part of water to obtain putty like consistency (distilled water, local anesthesia, normal saline).

What is the difference between MTA and calcium hydroxide?

MTA is more effective and superior comparing the Calcium Hydroxide as a direct pulp capping material, showed higher success rate with favorable outcomes in maintaining long term tooth vitality and easier to use in pulp capping. MTA is less toxic, less pulpal inflammation capping compared to Calcium Hydroxide.

Why is pulpotomy not used in permanent teeth?

The issues associated with coronal pulpotomy in permanent teeth are uncertainty on the pulpal status at the time of treatment, lack of predictability, and absence of any scientific and valid evidence on long term follow-up and success rate [13].

What can I use instead of formocresol?

Formocresol has a long history of clinical success, but concern exists regarding its safety as a medicament for primary molar pulp therapy. Alternatives have been proposed: calcium hydroxide, with relatively poor outcome and glutaraldehyde, which has shown better success rates than the former.

How long does a pulpotomy take?

A pulpotomy takes about 30 minutes to complete from start to finish. A member of the dental team will first numb the area to ensure that your child won't feel any pain or discomfort during the procedure. The endodontist will remove the damaged pulp from the tooth before sterilizing the area to remove all the infection.

Is MTA toxic?

At the 24-hour period, white MTA produced the lowest toxicity, statistically comparable to the control group (p > 0.05), whereas the white and gray CER cements presented the highest cytotoxic effects on the fibroblast-like MDPL-20 cells.

Do you cure MTA?

Light-curable and dual-cure MTA products contain resins which dilute and inhibit the MTA's bioactivity. Resins never cure 100%. Uncured resin leaves cytotoxic monomers in the MTA-resin matrix and in contact with the pulp. Resins shrink during curing; they are not dimensionally stable.

Is MTA a calcium silicate?

Mineral trioxide aggregate (MTA) is a calcium silicate-based cement (CSC) commonly used in endodontic procedures involving pulpal regeneration and hard tissue repair, such as pulp capping, pulpotomy, apexogenesis, apexification, perforation repair, and root-end filling.