A Answers (3)
American Dental Association answeredA dental filling is needed when you have a cavity. Tooth decay creates a cavity, which is a hole in your tooth. To stop this hole from expanding and spreading the decay, it is necessary to fill this hole with a filling. Fillings can be made from a number of materials.
Saul Miller, Dentistry, answered
A dental filling, which may be placed with a variety of materials, restores a fractured, chipped, decayed and sometimes worn tooth. When a tooth has extensive deterioration, a large filling can restore the tooth but not necessarily keep the weak areas from fracturing. Some materials are best used in specific situations, and not all materials work well in all situations.
When the tooth is extensively broken down, often a crown may be indicated to provide a more secure restoration that can help to prevent fracture and further breakdown of tooth structure.
You need a filling when tooth decay has caused a hole (cavity) to form on a tooth surface. If you don't get a filling, the cavity will get worse and lead to more severe problems, such as bone loss.
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