A 63-year old male patient came to our practice complaining about pain on tooth 46. According to symptoms and clinical findings, a root canal treatment was necessary. Our first step, before removing the pre-existing crown, was to take an impression with an A-silicon (DMG A-silicon StatusBlue) in order to be able to immediately deliver a temporary crown to the patient.
Initial situation from buccal view.
The old crown from occlusal view
After the root canal treatment, the residual tooth structure was quite limited.
A fiber post (DMG LuxaPost) was placed and cemented with the same material used to restore the abutment (DMG LuxaCore Z – Dual).
The abutment was prepared for a new complete crown.
Because of the uncertain prognosis of this tooth, a specific material for long term temporary restorations was used (DMG LuxaCrown). This material can ensure margin fit, resilience, high resistance and aesthetic stability for a long time.
DMG LuxaCrown was injected into the silicon impression, that was repositioned in the mouth after isolating the abutment with vaseline.
During the elastic phase of the crown material, which spans a period between 1:30 and 2:20 minutes, the impression must be removed. The semi-permanent restoration achieved the nal hardness after 5 minutes.
The crown was finished, fitting and occlusion were carefully checked.
Polishing procedure was meticulous, but simple at the same time, thanks to the aesthetic properties of the material.
The long term temporary restoration was cemented. Final situation, occlusal view.
A long-term temporary material can be the perfect solution in a case with uncertain prognosis. It allows both clinician and patient to be quite and confident in waiting for several month (or even more) before starting the workflow for the final crown.