Incisor veneers generally last about 5-10 years, mainly based on the material used for the veneers and the amount of incisor wear. If the veneers are made of resin-based materials, they will reach the fatigue stage in about five years. At this time, the veneers will become darker and fall off, so they need to be replaced in a timely manner, or else the aesthetics of the affected teeth will be affected. If it is a porcelain veneer, generally will not change color, the adhesive in about ten years there may be dissolution of the situation, resulting in a decline in adhesive force, this time you need to replace the veneer in a timely manner. If the patient is non-essential, try not to carry out aesthetic veneer repair, because the teeth are a certain amount of damage, you need to grind off a certain amount of teeth, in order to attach the veneer to the surface of the teeth, when the veneer is removed, the surface of the teeth is not beautiful.