How Long Do Fillings Last? Signs a Filling Needs Replacing
Quick answer: how long do fillings last?
Many fillings last 10 years or more. Cleveland Clinic says some can last up to 20 years, depending on the material. Research on tooth-colored fillings in back teeth shows yearly failure rates of about 1 to 3 percent. Size, location, grinding and new decay around the edges all affect how long yours lasts.
The two main reasons fillings fail are new decay at the edges and fractures.
Grinding, large fillings and high cavity risk can shorten a filling's life.
A worn filling often has no symptoms, so checkups matter.
Each replacement can remove a little more tooth, and a crown may be the better choice for a weak tooth.
You had a filling done years ago and now you are wondering if it is wearing out, or you just had one placed and want to know how long it will hold. Maybe a tooth feels rough, sensitive or different when you bite. This guide covers how long fillings usually last, what shortens their life and the signs one may need replacing. At Smyrna Dental Studio in Smyrna, GA, we check fillings at every exam, so these are questions we hear often.
How long should a dentist filling last?
A filling should last many years, but not forever. Cleveland Clinic says fillings can last a long time, about 10 to 20 years, depending on the material used. How long yours actually lasts depends on the tooth, the size of the filling, your bite and your cavity risk.
How long do composite fillings last?
Composite fillings are the tooth-colored kind. A review of clinical studies on back-tooth composite fillings found that yearly failure rates of 1 to 3 percent can be achieved. In plain terms, about 1 to 3 out of every 100 such fillings need attention each year. The same review found the material itself had only a minor effect on how long a filling lasted.
That is good news, because it means care, habits and how the filling is placed matter a lot. You can learn more about our tooth-colored fillings and how they are done.
What about older silver fillings?
Many adults still have older silver (amalgam) fillings. Like any filling, they can wear, crack or leak at the edges over time. If you have questions about yours, our post on safe amalgam removal explains how replacement is handled.
How long do fillings last on front teeth?
There is no single number for front teeth. How long a filling lasts depends on its size, where it sits and how much biting force it takes, so ask your dentist what to expect for your specific filling.
What makes a filling wear out faster?
New decay at the edges of the filling and fractures are the main reasons fillings fail over the long term. The research review links new decay to each person's cavity risk, and links fractures to factors such as grinding and the strength of the filling.
New decay around the edges
The American Dental Association explains that over the years, fillings may weaken, fracture and leak around the edges. Bacteria collect in those tiny gaps, acid builds up and decay starts again. To see what that decay can look like, read our guide on what a cavity looks like.
Grinding and clenching
Grinding your teeth puts heavy, repeated force on fillings. The review names bruxism, the medical term for grinding, as a patient factor linked to fractured fillings. If you wake up with a sore jaw, ask about it at your next visit.
Sugar, snacking and plaque
Frequent sugary snacks and drinks feed the plaque bacteria that make acid. That acid attacks both natural tooth and the edges of a filling.
Want this checked? If a filling feels rough, sensitive or loose, a short exam can show whether it is still sealing well. Book a visit online or call (770) 863-0005.
What are the signs a filling needs replacing?
A filling may need replacing if it is cracked, chipped or missing a piece, if food or floss keeps catching on it, or if the tooth becomes sensitive or sore when you bite. Often there are no signs at all, which is why a dentist checks fillings at each exam and may use X-rays to look for decay underneath.
Signs to watch for
A rough or sharp edge you can feel with your tongue
A crack, chip or part of the filling missing
Floss that shreds or catches in the same spot
New sensitivity to hot, cold or sweets
Pain when you bite down
When should you call right away?
Cleveland Clinic advises calling a dentist if a filling breaks or if you have severe pain that medicine does not relieve, a swollen face or jaw, or fever and chills. Go to the ER or call 911 if you have swelling with trouble breathing or swallowing, a high fever, or swelling that spreads to your eye, face or neck.
How many times can a filling be replaced?
There is no fixed number. Each time a filling is replaced, the dentist has to remove the old material and any new decay, which can take a little more healthy tooth with it. A lab study on replacing tooth-colored fillings found that replacement led to loss of tooth structure, and deeper fillings lost more.
Over time, a tooth that has had several larger fillings can become weaker. That is one reason dentists try to repair or replace a filling before a small problem becomes a large one.
When is a crown better than a filling?
A crown may be the better choice when so much of the tooth is missing, cracked or filled that a filling cannot hold it together. Cleveland Clinic explains that when damage is too large for a filling but not large enough for a crown, an inlay or onlay may be used. The right repair depends on how much healthy tooth is left.
What if decay reaches the nerve?
When a cavity reaches the pulp, the inner part of the tooth, Cleveland Clinic notes that a filling alone cannot fix it and a root canal may be needed. Teeth that already have crowns can still get decay at the edges. Our post on a cavity under a crown covers that situation.
Frequently asked questions
What destroys teeth the most?
Tooth decay is a major threat, and it is driven by plaque bacteria turning sugar and starch into acid. Frequent snacking, sugary drinks and skipped cleaning give that acid more time on your teeth. Grinding can also lead to cracked fillings. Brushing with fluoride toothpaste, cleaning between teeth daily and regular checkups all help.
Is 3 fillings at once a lot?
Not necessarily. Needing several fillings is common, and there is no set limit that applies to everyone. Whether they are done in one visit or split up depends on where the teeth are, how large the fillings are and your comfort. Your dentist will talk through a plan with you, and you can ask about sedation options.
How long does a tooth filling procedure take?
A standard tooth-colored filling is done in one office visit. Cleveland Clinic notes that direct fillings need only one visit, while indirect fillings such as inlays and onlays often need two. Your appointment length depends on how many teeth are treated and how large each filling is.
Is it normal for a new filling to feel sensitive?
Some mild sensitivity is common. Cleveland Clinic says minor tooth sensitivity and gum soreness are normal after a filling and should go away in a week or two. If pain is severe, gets worse or your bite feels off, call the office so we can check it.
How can I make my fillings last longer?
The ADA recommends brushing twice a day with fluoride toothpaste, cleaning between your teeth daily, limiting snacks and seeing your dentist regularly. If you grind your teeth, mention it, since grinding is linked to cracked fillings. Small habits help protect both your fillings and the natural tooth around them.
Have your fillings checked
Fillings do not last forever, but with good habits and regular exams, many hold up for years. If one feels rough, sensitive or different, an exam is the simplest way to find out whether it needs repair, replacement or more support. Dr. Raheel Thobhani can review your fillings and talk through options, including dental crowns for teeth that need more protection. We welcome patients from Smyrna and nearby areas. Book a consultation online or call (770) 863-0005, and our team will help find the earliest visit available. This is general information, not a diagnosis. A dentist needs to examine you to advise on your situation.