Dental fillings made of braces generally can be used for 8-10 years, usually recommended for replacement, dental fillings braces are generally recommended to use all-porcelain braces have no effect on the body, and is not easy to erode the gums. If the use of metal braces, long years of accumulation is easy to dilute the metal to produce coloring, there are individual patients will produce allergies, so the use of all-porcelain braces is better. If metal braces, the physical condition is not good need to do magnetic resonance will have an impact on the conclusion of the film will have a certain impact. If it is a simple filling, the teeth did not take the nerve can still be maintained, but if the area is large or has taken the nerve, it is recommended to use braces, that is, porcelain teeth to repair, the teeth can be used for a long time.