Shell-shaped dental instrument with caries prevention function

The utility model provides a shell-shaped dental instrument with a function of preventing decayed teeth, which comprises a body which is in an integrated shell shape and forms a cavity for accommodating teeth; and the anti-caries film has a certain thickness, is formed on at least partial region of the inner surface of the body, and can react with saliva to release fluorine ions. 本实用新型提供了一种具有预防龋齿功能的壳状牙科器械，包括：本体，为一体的壳状并且形成容纳牙齿的空腔；以及防龋膜，具有一定厚度，形成于所述本体内表面的至少部分区域，其能够与唾液反应释放氟离子。