White or Composite Restorations: Tooth coloured fillings primarily used in front teeth to match individual shade colours. Made up of a composite of plastic resins which, once set with curing light will produce a filling of natural appearance. Although they are aesthetically ideal, composite filling material is bonded to the tooth structure and studies show they tend to debond or breakdown sooner than amalgam fillings.
Certain criterias define the use of composite filling material in posterior teeth (bicuspids and molars). They are technique-sensitive meaning that without meticulous placement they may fail prematurely. They take up to 50% longer to place than amalgam fillings and are thus more expensive. You should discuss the applicable uses and pros & cons of composite restorations verses amalgam restorations as per your dental treatment with your dentist.