OrthoMTA Carrier

OrthoMTA Carrier

1. Introduction

This device provides unrestricted access to the canal orifice, allowing an accurate orthograde grafting procedure with MTA whilst avoiding the dispersion of the root grafting material in the oral cavity.

The use of MTA powder in orthograde grafting of the root canal was introduced by Dr Yoo (2009). To improve the prognosis for success of orthograde grafting with MTA, BioMTA concentrated on the development of orthograde root canal grafting materials.

The orthograde grafting techniques with OrthoMTA have resulted in a considerable improvement in the quality of orthograde root canal graftings and significantly improved the success rate statistics.

The apical 5mm preparation of the root canal is particularly important.

This is because orthograde root canal grafting requires sufficient space for apical irrigation and apical plug formation without microleakage.

The success of orthograde root canal grafting depends to a very large extent on the quality of the orthograde obturation. OrthoMTA has superior sealing properties to any other materials.

2. Material

During the last three years the OrthoMTA carrier has been extensively clinically tested and has been continuously improved particularly in terms of the materials used.

2.1 Instruments

The complete instrument set consists of a stainless steel applicator syringe (fig.1) with a bayonet catch for the disposable cannulas (needles) and luer lock connector.

The small diameter of the application needles means that the root canal grafting can be applied directly into the root canal orifice.

The internal diameter of the cannulas is 0.9 mm, as a result of which sufficient portions of the orthograde grafting material can be applied successively (Fig.2)

The intracannular plungers (Fig 2.) are made of Nitinol, a Nikel titanium alloy for medical purposes (Fig.4).

OrthoMTA was used as the orthrograde grafting material. Alternatively, other plastic materials can also be applied with the instruments. The quality of the orthograde root canal grafting was checked post-operatively with individual apical X-ray images.

2.2 Operative procedure

The operating procedure is carried out in accordance with endodontic guidelines. After canal enlargement, the canal is filled orthogradely with OrthoMTA . The root canal grafting material which has been applied is compacted with a plugger and OrthoMTA condenser (Fig. 8, 9).

3. Conclusion

This new instrument was developed to improve the quality of orthograderoot canal grafting. It has been demonstrated that inserting plastic orthograde root canal grafting material is made easier with the OrthoMTA carrier. Therefore sufficient obturation of the root canal can be achieved without material dispersing into the oral cavity.

As an orthograde root canal grafting material, MTA has the advantage of being the only material that can achieve adequate hardening of the orthograde canal grafting and therefore sufficient compaction. This is due to its hydrophyllic properties under moist conditions such as blood/wound exudates.

Perfect orthograde root canal grafting is based on an apical preparation with an OrthoMTA file to a length of at least 5 mm. Access to the orifice is considerably improved due to the geometric design of the instruments.

A sufficient portion of orthograde root canal grafting can be laid starting from the orifice of the root canal, thereby enabling an orthograde root canal grafting to be made free of air bubbles.

Dispersion of root canal grafting material is thus avoided.