“How long do fillings last?”

Average about 10 to 13 years.

Depends on a lot of things sometimes they won’t make it a week but on average about 5 to 7 yrs

You ask how long does a filling last? It depends. What is the diet, biome and home care of the client? How ideally was the placement performed, what were the materials used? My clients have many of my composite fillings that are going strong after 30 years. I've seen excellent gold crowns (which should last twice as long as composite) fail in under 5 years due to post-placement root decay attributable to frequent exposure to simple carbohydrates (e.g., sport gels) and careless home care. Modern bondable bonded ceramic onlays, inlays, crowns, even veneers, done well, should function for several decades...while cemented restorations may fail earlier as the cement fails allowing for recurrent decay. Choose a doctor who has the skill and takes the time to apply that skill using the best materials for the job. Maintain ideal oral hygiene and minimize exposure FREQUENCY to carbohydrates, and you should expect decades from your filling, unless it is at the gum line.

Tooth colored fillings generally last 10 years. The older silver fillings tend to last longer.