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Home Hygiene & Prevention Cost of a filling
HYGIENE & PREVENTION · COST

How much does a dental filling cost: price range and what determines it

The cost of a filling isn't a fixed figure: it depends on the size of the cavity, the tooth affected and the material used. As a market reference, the OCU puts the median price of a filling in Spain at €80. Your exact quote comes from the check-up.

Dentaláser clinical team · Clinical director: Dr Alberto Cerezo · Published on 2 September 2026
A dentist reviewing a dental X-ray to assess a cavity
An X-ray shows the real extent of a cavity before deciding on treatment.

What determines the cost of a filling

  • Size and depth of the cavity: a small cavity limited to the enamel is quicker to treat than one that has progressed towards the dentine or close to the nerve.
  • Number of tooth surfaces affected: a filling on a single surface of the tooth is less work than one covering several surfaces.
  • Material used: composite (tooth-coloured) or, increasingly rarely, silver amalgam.
  • Tooth affected: molars, with larger, more irregular surfaces, usually need more work than an incisor.
  • Additional preparation: if anaesthesia, special isolation or rebuilding a large part of the tooth is needed, the price rises compared with a simple filling.

Indicative market price

Reference price for a filling, Spain
ReferencePrice
National median (all materials)*€80
AmalgamThe most affordable material, below the median
Composite (tooth-coloured)Requires more work, above the median

*Median price of a filling in Spain, according to the Organización de Consumidores y Usuarios (OCU) survey on dental health, November 2024. This is not Dentaláser's price, nor an official breakdown by material: your exact quote depends on your case and comes from the check-up, which is free at the first visit.

Composite or amalgam: why it affects the price

Silver amalgam is the most affordable material and very durable, but it has a visible metallic colour and is used less and less nowadays for aesthetic reasons. Composite, which matches the colour of the tooth itself, has become the majority choice: it requires more work (it's applied in thin layers that have to be shaped and polished), and that's reflected in a price somewhat higher than amalgam.

When a filling is no longer enough

⚠️
If the decay has reached the nerve, a filling isn't enough When the infection reaches the dental pulp, the treatment needed is no longer a filling but a root canal, and sometimes a crown afterwards to protect the tooth. Only an examination with an X-ray can show how far a cavity has progressed before deciding what treatment is needed.

Why delaying a filling costs more

A cavity doesn't stop by itself: if it isn't treated in time, it keeps progressing. What is a small, inexpensive filling today can turn, a few months later, into a large filling, a root canal or even the loss of the tooth. That's why a check-up every 6 months (the usual hygiene and prevention frequency) is the cheapest way to keep the cost of any cavity under control, as well as the most convenient for you.

Frequently asked questions

It shouldn't hurt: it's done with local anaesthetic when the cavity has reached the dentine, and for very superficial cavities it's sometimes not even needed. Some sensitivity may remain for the first few days, which usually goes away on its own.
It depends on the size, the location and your daily hygiene, but a well-made, well-maintained filling can last many years. It's checked at every dental clean to spot early on whether it has worn down or whether new decay has appeared around it.
No. Once decay has destroyed part of the tooth, that tissue doesn't regenerate on its own: it has to be removed and the space rebuilt with filling material. What regular check-ups do prevent is a small cavity growing into one that needs a large filling.
Sources
  • Organización de Consumidores y Usuarios (OCU), dental health survey, November 2024: median price of a filling in Spain.
Disclaimer
  • This article is for information purposes only and does not replace the assessment of a healthcare professional. Always consult your dentist.
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