Generally, patients should consider replacing their crowns after approximately 10-15 years.
The most common causes can be the replacement of dental crowns for various reasons such as aesthetic in the case of replacement of metal crowns or ceramic porcelain crowns pure case of anterior teeth.
For example, you may see a dark line between the old crown and the gum, this can be a quantity of metal that appears sometimes under the cover of china. If there is decay, there’s really nothing wrong with the tooth or the crown. This line may develop after years of brushing the area with a brush too hard or possibly because of periodontal disease.
