Veneers fail early for two main reasons, and both come down to things that have nothing to do with the veneer itself: your bite and your gum health.

If your bite is putting uneven or excessive force on your teeth, that same force lands on a veneer once it's placed. A nightguard helps, but it's not a full fix on its own. Even at eight hours of sleep, that's only a third of your day. The other two-thirds involve eating and everyday function, all of it happening without the nightguard in. If the bite itself needs correcting, that usually means addressing it directly through orthodontics rather than managing around it indefinitely.

Gum health matters just as much, and it's less talked about. The edge where a veneer meets your natural tooth has to stay clean, or the cement bond breaks down faster, gums recede around the margin, and in the more serious cases, gum disease sets in. This is closely tied to something called the emergence profile, essentially how the veneer transitions out of the gumline. A no-prep veneer that creates a small ledge instead of a smooth transition makes that area much harder to clean, even if the veneer itself looks great on day one.

The best veneer work is the kind you can't identify as a veneer, not just because of the shade or shape, but because of how naturally it emerges from the gum. The worst tends to look stuck on, more like a press-on nail than a natural tooth. That difference isn't cosmetic. It's usually the difference between veneers that last and ones that don't.