For the purpose of providing a material for dental prosthesis, which does not require an additional heat treatment after machine processing, while having improved cuttability even after acquisition of necessary strength, a material for dental prosthesis according to the present invention is configured to contain from 60.0% by mass to 80.0% by mass (inclusive) of SiO2, from 10.0% by mass to 20.0% by mass (inclusive) of Li2O and from 5.1% by mass to 10.0% by mass (inclusive) of Al2O3.