How Long Do Crowns Last?

How Long Do Crowns Last?
How Long Do Crowns Last?

How long do crowns last? this question automatically arises with the need to crown a tooth. The dental crown is a dental prosthesis that is needed to protect a damaged tooth, support a tooth with large restoration, cover a severely discolored tooth, or after root canal treatment. It can be classified according to the material used: metal, gold, porcelain-fused-to-metal, all-ceramic, and all-resin. Each type has differences in the stability, aesthetics, and durability.

How Long Do Crowns Last?

Unfortunately, it’s impossible to be 100% sure how long do crowns last. Because the lifespan of crowns depends on several factors such as chewing force and oral hygiene. Also, the dental crown material and the quality of processing play a role. With appropriate oral hygiene, dental crowns last between 10 and 15 years on average.

Factors Determining How Long Do Crowns Last

There are several factors determine how long do crowns last, include:

Oral Hygiene

How long do crowns last? With appropriate oral hygiene, a dental crown has an average lifespan of 10 to 15 years. Inappropriate oral hygiene can lead to gingivitis, gum recession, and the formation of dental caries under the crown. This will decrease the survival rate of the crown. In this case, the dentist will remove the crown and treat the underlying tooth (tooth filling or root canal treatment). Also, he/she will perform a professional cleaning to prevent the spread of infection to the tooth supporting tissues (periodontitis). Then, he/she will prepare the tooth to receive a new crown. If the tooth left untreated, this may lead to tooth loss.

The Condition of The Tooth

The current condition of the tooth and surrounding tissues can affect the lifespan of the crown. Placing a crown on a severely damaged tooth or a tooth with periodontal disease decreases the life expectancy of your crown. You can estimate how long do crowns last by asking your dentist.

Bad Oral Habits

Bad oral habits such as teeth grinding, using your teeth to open packaging, or biting hard things like ice may cause chipping and breakage of all-ceramic and porcelain-fused-to-metal crowns. Ceramics are brittle and can break more easily under strong pressure in comparison to metal and gold. For patients with teeth grinding, gold crowns can offer a long-lasting solution for the protection of teeth in the posterior, non-visible area (molar teeth). Also, a mouth guard is needed for the protection of the crowned teeth and the prevention of wear of the opposing teeth.

Crown Material

Dental crowns can be classified according to the material used. Gold and metal are characterized by long durability. They can last 15 years on average. However, they are unaesthetic so, they are mostly used in posterior, non-visible area (molar teeth).

Porcelain-fused-to-metal and all-ceramic have a great aesthetic appeal. However, ceramics are not resistant to breakage as metal. They can last 10 years on average. All-resin crowns have a much shorter lifespan therefore, they are used as a long-term temporary crown.

Dental Lab

The making of a dental crown depends on both dentist and lab technician. It requires a high level of skill and experience. Poorly fitting crown will keep coming loose and won’t prevent the leakage of bacteria to the underlying tooth, causing complications such as tooth sensitivity, gum disease, and the formation of dental caries. So, if you have a loose crown, visit your dentist immediately. He/She will secure it back in place (if the dental cement that holds the crown in place is deteriorated) or replace it (if the crown does not fit properly).