To provide a dental mirror with a tongue/cheek pressure shoving piece in which an irreducibly minimum working space is easily and surely obtained even in a patient having the narrow oral cavity, working is speedily performed, and it is not necessary to increase appliances therefor.

The dental mirror with the tongue-cheek pressure shoving piece is provided for easily and surely shoving pressure from the tongue and the cheeks to an irreducibly minimum to safely and speedily perform treatment when cutting a molar. The dental mirror with the tongue/cheek pressure shoving piece is effectively utilized in a limited basic set and is combined with a mirror to be taken when cutting, thereby safely improving efficiency without exchange.