What are they?
A filling replaces part of a tooth that has been lost because of decay or through accidental damage. You may hear the dentist talk about ‘composite’, ‘glass ionomer’ and ‘compomer’ – these are different types of white filling material.
What will my dentist do?
- Usually numb the tooth and adjacent area with an injection – some small fillings may not need this.
- Remove any decay, together with any old filling material, and shape the cavity using a small, high-speed drill.
- Wash and dry the tooth by blowing water and then air onto it.
- Use one of a variety of means to isolate the tooth and keep it dry.
- Apply a special adhesive to the tooth, typically in two or three stages, and then place the filling, again in stages.
- Harden the filling material between stages of the filling procedure, by the use of a bright light shone inside the mouth – this is called ‘curing’.
- Trim the filling as necessary and then polish it, checking that you can bite together comfortably.
What are the benefits?
- A tooth needs less drilling for a white filling than for a silver filling.
- Unlike silver fillings, white filling materials, which come in different shades to match different coloured teeth, are glued into place, sealing the filling and helping it to strengthen the remaining part of the tooth. White filling materials can be used in most situations, including the filling of back teeth and making front teeth look better.
- When used in back teeth, white fillings look better than silver fillings, but take longer to place, partly because they are finished and polished in one visit. White fillings may not wear as well as silver fillings but they do have the advantage that they can be repaired, rather than replaced, as and when something goes wrong.
- The longevity of white fillings is greatly extended by good oral hygiene.