How long should a porcelain crown on a molar tooth last?

Varies by use: I have seen estimates that range from about 8-15 years but not everyone is the same and not everyone takes care of their teeth the same. Some will make a porcelain crown last 20+ years easily and others will have it fractured in less than 5 years. The other factor is the quality of the crown as well.

10 yrs: Average lifespan of a crown is around 10 years.

ABout 7-10 years: Most crowns if well taken care of will last last 7-10 years. However, it is important to have your regular annual dental checkups and cleanings to keep things healty.

It depends: Depending on the situation and the condition of the tooth that is receiving the crown. Many factors can influence the longevity of a crown. Factors ranging from the general health of the patient, oral health, habits, etc... Longevity of porcelain crowns is very similar to any other crown. The dental profession estimate the life span of a crown around 15 years, but that is in optimal conditions.

Minimum of 5 years: They are designed to last longer, but it will depend on your home care, as well as getting your teeth professionally cleaned at least twice a year.

Hard to say: A crown should last according to your insurance five years. I would be disappointed in anything less then 10 years. But it depends on many factors.

About 5-15 years: There is no expiration date on crowns. With good oral hygiene it may last indefinitely. Decay in the underlying tooth or fracture of the porcelain may be factors which necessitate replacing the crown.

5-10 years: If well maintained a crown should last between 5-10 years. Additional factors come into play. For example, chewing hard foods, or excessive forces due tgrinding/clenching (bruxism) can lead to porcelain fractures and or tooth loss. Additionally, if the crown margins (edges of the crown which run along the gum line) are not well maintained by proper brushing, the crown may be lost to decay.

5 to 25 years: In general, according to the insurance industry at least 5years. We prefer to think between 10 to 30 years. It wil depend on a lot of factors such as oral hygiene. Check up visits, quality of workmanship, dental materials skills and expertise of the dentist. They tend to fail because of fracture of the porcelain, new caries around the gum line or even from gum disease that weakens the bone.

7-10 years: There are many factors that influence the life of a crown. How well you take care of it is probably the most important. A porcelain crown can break just like a natural tooth if it is traumatized.

Indefinitely: There is no set time frame for it to last...

It depends...: There is not a short answer for this one. Many factors affect the longevity of restorations: quality of the restoration, fit of the restoration (i.e. Open margins), quality of the impression, materials used, home care, occlusion, and normal tear and wear. On average, a crown should last at least five years (exceptions apply), but a good fitted, good quality crown could last up to 20+ years.

Depends: It is hard to determine exactly how long porcelain on a crown "should" last. In a patient with no parafunctional or damaging grinding habits, etc. The porcelain can last many, many years. However, porcelain can commonly fracture off a crown. There are many causes for this and it is not terribly uncommon.

Varies: Can last a short period to a lifetime. Factors greatly affect longevity bite force on molar (ie. Grind or clenching increases likelihood of fx), diet (ie. Chewing ice, nuts will increase risk of porcelain fx), homecare/diet which influences the risk of caries under your crown, and clinical parameters that make for a successful crown.

Varies: Should be permanent. Situations (trauma) may shorten life of crown.