A well-planned veneer on a suitable tooth does not damage it, and porcelain veneers have a good long-term track record. The catch is permanence. A traditional porcelain veneer needs a thin layer of enamel shaved from the front of the tooth, enamel never grows back, and from then on that tooth will need a veneer or crown for life. The real question is whether that trade suits your teeth.
Where the fear comes from
The worry is not baseless. Preparing a tooth for a traditional veneer changes it for good. What people often run together is permanent change and damage. When only a little enamel is removed, the veneer is bonded well and the case was right for veneers in the first place, the tooth underneath stays healthy. Problems tend to start when too much tooth is removed, when veneers are used to fix something they are not suited to, or when the teeth are not looked after afterwards.
Front tooth enamel is thinner than most people think
Enamel on the front surface of an upper incisor is not evenly thick. In a laboratory study of extracted incisors (Pahlevan and colleagues, Journal of Dentistry, Tehran, 2014), it measured about 0.24 to 0.35 mm near the gum line and roughly 1.2 to 1.3 mm towards the biting edge. Veneer preparation is usually a fraction of a millimetre, but near the gum that can be most of the enamel that is there.
That matters because porcelain bonds most reliably to enamel. Careful planning, often with a mock-up or a digital design first, lets the dentist remove only what is needed and keep the bond in enamel where possible. In some cases very little preparation is needed at all.
How much tooth each option uses
| Option | Tooth removed | Can it be undone? | Often suits |
|---|---|---|---|
| Traditional porcelain veneer | A thin layer of enamel | No | Larger changes in colour or shape |
| Minimal-preparation porcelain | Very little, sometimes none in places | Sometimes | Modest changes on teeth with good enamel |
| No-preparation porcelain | Little or none | Often | Small or narrow teeth that need adding to |
| Composite veneers or bonding | Often little or none | Often | Smaller changes that can be repaired and refreshed |
Our articles comparing types of veneers and explaining no-prep veneers go into which situations suit each. A more conservative option is not always possible, because it depends on where your teeth start, but it is always worth asking about.
Veneers last well when the case is right
A systematic review by Morimoto and colleagues in the International Journal of Prosthodontics (2016), which pooled 13 studies, estimated that about 89 per cent of ceramic veneers were still in place after a median follow-up of nine years. Chipping or fracture of the porcelain was the most common problem, at around 4 per cent, while debonding and new decay at the veneer edge were each uncommon, at about 2 and 1 per cent. The authors concluded that ceramic veneers are a safe treatment that preserves tooth structure.
Those figures come from studies, not a promise for any one person. How long veneers last depends on the bite, habits such as grinding or nail biting, and how well the teeth and gums are cared for. Our article on how long veneers last sets out realistic expectations.
The tooth underneath still needs looking after
A veneered tooth is still a living tooth. Decay can start at the edge of a veneer if plaque is left there, and gums can recede over the years and show the join. Brushing twice a day, cleaning between the teeth and regular check-ups protect the tooth as much as the veneer. A night guard may be suggested if you grind, and chewing ice, biting nails or opening packets with your teeth are best avoided. Our guide to caring for veneers covers the day-to-day side.
When a veneer eventually wears or chips, it is replaced rather than removed and left bare. That ongoing commitment is part of the original decision.
Sometimes the answer is something other than a veneer
Some concerns that seem to call for veneers can be handled with less. Whitening can lighten natural teeth without touching the enamel, and composite bonding can rebuild a chip or close a small gap with little or no drilling. At the other end of the scale, a tooth that is heavily filled or badly broken may be better protected by a crown. Our comparisons of bonding and veneers and of crowns and veneers can help you weigh the options before any tooth is prepared.
What patients ask about veneers and their teeth
Can teeth rot under veneers?
The veneer does not cause decay, but decay can start at its edge if cleaning is poor. In the Morimoto review, new decay was an uncommon complication. Daily cleaning and regular check-ups keep the risk low.
Are veneers reversible?
Traditional veneers are not, because the enamel removed does not return. No-preparation veneers and many composite veneers remove little or no enamel, so they can be more reversible depending on the case.
Will I always need veneers once I have them?
With traditional veneers, yes. The prepared tooth will need a veneer or crown from then on, and each veneer is replaced when it wears out.
If you are thinking about veneers, the team at Lumi Dental can look at whether they suit your teeth, which type would keep the most enamel, and whether a simpler option would do the job. Read more about porcelain veneers and composite bonding at Lumi in Melrose Park, or see the current deals page.
