Composite fillings are one of those modern dental upgrades that quietly make life easier. They’re tooth-colored, they bond to your tooth, and they let you smile without broadcasting, “Yep, I’ve had dental work.” But the question almost everyone asks sooner or later is simple: how long do they actually last? The honest answer is that composite fillings can last a long time—often years and sometimes well over a decade—but their lifespan depends on a mix of factors that are surprisingly practical. Think everyday chewing habits, where the filling sits in…