A filling is required when there is decay or defect within a tooth or when we are trying to improve the appearance and function of a tooth. The procedure involves removal of the decay or defect, and restoring the tooth with a filling material. This is important to prevent the progression of the decay and protect the nerve of the tooth. 
 
Any filling material has the potential to chip, fracture or de-bond (come away) and therefore may require replacement at a later date. Your dentist may advise you that a crown is more appropriate if the tooth chips, or that a filling may be required as part of a core (to support a crown). 
 
Some filling materials can occasionally cause sensitivity in the tooth, which normally settles within a few days but can last up to a month. If the sensitivity persists the tooth may require further treatment, potentially a root canal or extraction which will necessitate further work, appointments and expense.  
 
If oral hygiene is not well maintained, or a low sugar and acid diet is not followed, decay may reoccur around the filling and would require the filling to be removed and replaced potentially at a further cost. 
 
The options of different filling materials have been discussed – including amalgam (silver-mercury filling), glass ionomer, composite (tooth-coloured) resin restorations. 
 
The fillings, because of the way they are made, and the way they are placed may require polishing and more regular review to ensure their appearance is at a high level. If the filling requires further polishing in the years to come then you may be charged a fee to re-polish the restoration. 

Composites may chip stain or wear and they may need resurfacing, re-polishing or replacing over their lifetime. They normally last 3-5 years and they are guaranteed unless a lower time is otherwise specified for a period of 1 year - consent. 

We recommend regular check-ups, and to see the hygienist to maintain good oral hygiene around the restorations so they may last for as long as possible.