Treating tooth decay before its too late

Untreated dental decay (cavity) can lead to toothache, infection or tooth loss. Fixing cavities before they become too large and a crown is needed is imperative. We use natural looking, durable white quartz composite fillings (as opposed silver-mercury amalgam).

Tooth decay symptoms

  • Toothache
  • Tooth sensitivity
  • Sudden pain when biting
  • Bad breath
  • Food getting caught in teeth


  • Carefully numb affected area with fast-acting, effective local anaesthetic
  • Remove decay within tooth
  • Smooth away any rough edges
  • Apply white filling to bond to your tooth enamel*

*The filling is not ‘plugged in’, as it would have been several years ago, but ‘bonded’ to ensure the resin will remain firmly in place.

Avoiding fillings

Tooth decay is entirely preventable by following the steps below:

  • Have regular dental check-ups and hygiene treatments
  • Brush your teeth twice a day for two minutes with a flouride toothpaste
  • Use an electric toothbrush
  • Change the brush heads every 3 months
  • Clean between your teeth
  • Avoid sugary or acidic drinks and food


Fillings (tooth coloured composite)


Added retentive pin


*The cost varies according to size and complexity of restoration required.

If you have any questions about our fillings treatment call, or book an dental examination appointment today.

Call 020 7621 0600

White (Quartz Composite) vs Amalgam (silver-mercury) fillings

At Cap City dental we only use white fillings having not used silver-mercury based ones for over 25 years.

White Fillings (Quartz Composite)


  • Natural-looking; tooth-coloured material
  • Safe to use and fast to apply
  • Inexpensive
  • Bonding; so no healthy tooth surface removal
  • Durable; longevity varies between 5-10 years
  • Versatile; Ideal for small and medium cavities
  • Insulating; more protection from hot or cold foods


  • Strength limitations in larger cavities*
  • Prone to wear and leak

Amalgam (silver-mercury)


  • Hard wearing
  • Inexpensive, easy to use


  • Poor appearance; silver-coloured material
  • Prone to crack and leak over time
  • Tends to make the tooth look gray
  • Potential health and environmental concerns due to mercury
  • Cannot be used in deciduous teeth
  • Restrictive use in children, pregnant and breastfeeding women**

*Composite fillings can be used in larger cavities with additional retaining pins. In a very heavily filled tooth, it can be used as a core material if a crown is to be fitted over it for maximum support.

**from 1 July 2018, UK law states that dental amalgam should not be used in the treatment of deciduous teeth, in children under 15 years-old, and in pregnant or breastfeeding women, except when deemed strictly necessary by a dentist based on the specific medical needs of the patient.

Cap City is located In the heart of the City of London and can be found at:

123 Cannon Street • London EC4 5AX