The process of removing the mineral content from a hard tissue, such as bone or tooth, with the aid of acids.
The absorption of calcium from a tissue or structure in which it is normally present or is an integral component.
The loss of calcium salts from teeth and bones.
Loss of calcium from bone or teeth.
Loss or removal of calcium salts from a bone or tooth.
The removal or withdrawal of calcium salts from bone or teeth.
The depletion or elimination of calcium salts from the bone.