Fixed prosthodontics is concerned with restoring teeth using restorations that are fixed into the patient's mouth. They are typically made in a laboratory after taking impressions (moulds) for the technician to work with. They are also known as 'indirect restorations'.
Indirect restorations can be used to restore and repair single or multiple teeth, and can be used to restore relatively small spaces between the teeth. Indirect restorations are relatively strong compared to fillings that can be placed at the chair side. Often the indirect restorations can be made to look better (superior aesthetics). It is difficult to say how long fixed restorations should last. If they are planned, executed and maintained correctly, they could last anywhere up to 10-12 years, and perhaps longer.