Dental crowns rarely need to be replaced unless there is some particular problem, problems either occur if the Crown fractures, the underlying tooth becomes decayed and diseased or gum results exposing the Crown margin which can often look like a black line around the edge of your dental crown.
The average age of a dental crown is around 15 to 20 years, they can however last a lifetime if made from good quality materials with exceptional workmanship and if you look after the dental crown.
Notice how the after photographs look more rounded and feminine, this is because Square and angular teeth can often look older and more masculine. Making teeth slightly whiter and more rounded gives them a more feminine and youthful look.
When crowns are made and last a long time the bone can resorb due to age. This results in means that the gum also disappears creating a black triangle in an area that once used to be filled with healthy gums this you. Many times the only way to cover up this black triangle is to remake the crown or bridge and close the space.
It’s not always necessary to replace every single tooth to restore smile, in this case the two upper front teeth only were restored with dental crowns.
This is a classic example of the black edge around a dental crown showing. When this crown was originally made the edge was probably hidden by the gum, as the patient ages and the gum recedes then the edge of the dental crown can become exposed. This often looks very black. A simple replacement of the crown, making the teeth slightly lighter give a much more youthful and bright appearance to this patient.