Veneers, bonding or a crown: how we actually decide

Three treatments get discussed for the same complaint — a front tooth that is chipped, worn, discoloured or the wrong shape — and they are not really alternatives to each other. They sit on a spectrum of how much of your tooth is involved, and the correct answer is almost always the least invasive one that will actually hold.

The spectrum

Composite bonding adds material to the tooth and removes almost nothing. It is sculpted directly in the chair in a single appointment, cured with a light and polished. It is reversible in the sense that a tooth underneath it is essentially untouched.

A porcelain veneer replaces the front surface with a bonded ceramic facing, typically 0.3 to 0.7 mm thick. Most preparations remove some enamel. Some cases can be done with no preparation at all, but they are the minority, and enamel does not grow back.

A crown covers the whole tooth. It removes the most structure by a wide margin and it is a treatment for a tooth that is already substantially compromised — a large old filling that is cracking, a fracture, a root-treated molar.

How we actually decide

Four questions, in this order.

1. How much sound tooth is left? A tooth with a large existing restoration and cracked cusps is not a bonding case, however much you would prefer it to be. A tooth with a chipped corner and otherwise intact enamel almost always is.
2. How is it loaded? Wear facets, a deep bite or an edge-to-edge relationship put forces through a front restoration that a normal bite does not. Composite on a heavily loaded biting edge will chip. If we find wear, a night guard and a bite assessment come first, and that is not an upsell — it is the difference between a restoration lasting and failing.
3. How many teeth are involved? One chipped edge is a bonding job. Six or eight teeth needing shape and shade changed together is a veneer conversation, because matching composite across a whole smile and keeping it matched is genuinely difficult.
4. Should anything move first? This is the question most people are not asked. Straightening before veneering routinely means preparing four teeth instead of eight, and preparing them less. It adds months. It is very often worth it, and it usually costs less overall.

The most useful thing a cosmetic dentist can do is name the cheaper option out loud.

What each one actually costs you, beyond money

Bonding: one visit, no laboratory, no temporaries, roughly a third of the fee of a veneer. It picks up stain at the margins — noticeably so in coffee and red wine drinkers — and typically needs repolishing every year or two and replacement inside five to seven. That is a maintainable restoration rather than a definitive one, and for the tooth it preserves, that is a reasonable trade.

Veneers: four or five visits over six to ten weeks, a design phase, a trial smile you wear out of the building, temporaries for two to three weeks, and irreversible preparation on most teeth. Ceramic holds colour and polish far longer than composite. Published follow-up commonly reports the majority of bonded ceramic veneers still in service at ten years, with failures rising after that. We will not put a number on your particular case.

Crowns: two visits, significant tooth removal, and a small but real risk that a prepared tooth subsequently needs root canal treatment. On a root-treated back tooth, coverage is usually the right call — uncovered root-treated molars fracture at a much higher rate, and a vertical root fracture generally ends the tooth. On a front tooth with plenty of structure left, often it is not.

The onlay nobody offers

One option that gets skipped: an onlay, which covers only the cusps that need protecting and leaves the rest of the tooth alone. Where a tooth allows it, it is a better answer than a crown, and we will propose it. It is less profitable and more technically demanding, which is probably why it comes up less often than it should.

Where we start

With a mock-up. For anything cosmetic, the design is made digitally and then trialled directly on your unprepared teeth in temporary material. You wear it, photograph it, show it to somebody, and come back with changes. Nothing is irreversible until you have seen it in your own mouth and agreed to it. If a practice cannot show you that before preparing, ask why.

More on bonding and crowns ·More on porcelain veneers ·More on clear aligners