| 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. |
 |
| Fig.1 Assembled applicator syringe |
 |
| Fig.2 a bayonet catch for the disposable applicator cannulas (needles) |
 |
| Fig.3 The small diameter needle and luer lock connector |
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). |
 |
| Fig.4 SEM of the surface of the intracannular pluger. |
 |
| Fig.5 The grafting material can be taken from a microviall |
 |
Fig.6 Applicator needle/cannula in prepared orifice in situ
(with nitinol plunger in the cannula) |
| 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. |
 |
| Fig.7 post-operatively periapical X-ray images of orthograde grafting with OrthoMTA |
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). |
 |
| Fig.8 Plugging |
 |
| Fig.9 Condensing with OrthoMTA condensor |
