What is the best material for filling teeth?

The filling materials will be updated. At present, nano-resin is better. The commonly used material for filling teeth is light-cured resin, which can be divided into anterior tooth resin, posterior tooth resin and general resin for anterior and posterior teeth. The traditional filling materials we use are amalgam and cement, including glass ionomer cement. Amalgam is characterized by good firmness, good wear resistance and good compression resistance. The disadvantage is that it is not beautiful enough, and the other is prone to micro-cracks. Micro-gap will lead to secondary damage to teeth, because secondary damage will lead to further damage to teeth and loss of fillings. The material of cement is glass ionomer cement, whose wear resistance is often not as good as amalgam, and some hydraulic materials can be dissolved by saliva. The performance of light-cured resin is between amalgam and traditional cement, and it is also the most commonly recommended material by doctors at present.