Composite fillings are a mixture of glass or quartz filler in a resin medium that produces a tooth-colored filling. They are sometimes referred to as composites or filled resins.
Composite filling provide good durability and resistance to fractures in small to mid-size restorations that need to withstand moderate chewing pressure. A composite filling usually requires only one visit, during which the tooth is prepared and restored. An advantage of composite fillings, is that they require less of the healthy part of a tooth to be removed to hold the filling in place. This is due to composite materials’ ability to bond to teeth adhesively.
Composites are preferable for obvious cosmetic reasons, but if the decayed area is large or is subject to heavy chewing pressure, your dentist may recommend another type of material or restoration.