Why do many dentists today use other materials to repair teeth?

Composite resin: Composite resin is a tooth-colored material that is used to repair small to medium-sized cavities. It is made of a mixture of resin and glass particles, and is bonded to the tooth using a special light. Composite resin is strong, durable, and natural-looking, making it a popular choice for repairing teeth.

Glass ionomer cement: Glass ionomer cement is another tooth-colored material that is used to repair teeth. It is made of a mixture of glass particles and polyacrylic acid, and is bonded to the tooth using a chemical reaction. Glass ionomer cement is strong, durable, and releases fluoride, which can help to prevent cavities from developing.

Amalgam: Amalgam is a mixture of metals, including silver, copper, tin, and zinc. It has been used to repair teeth for over a century, and is still a popular choice for repairing large cavities. Amalgam is strong, durable, and relatively inexpensive. However, it is not as natural-looking as composite resin or glass ionomer cement.

Gold: Gold is a strong, durable, and biocompatible material that has been used to repair teeth for centuries. It is the most expensive material used for dental restorations, but it is also the most durable. Gold is typically used to repair large cavities or to replace missing teeth.

Porcelain: Porcelain is a hard, white material that is used to make dental crowns, bridges, and veneers. It is strong, durable, and natural-looking, making it a popular choice for repairing teeth.

The choice of material used to repair a tooth depends on a number of factors, including the size and location of the cavity, the patient's budget, and the dentist's preference.