If the carious process proceeds unchecked, degenerative changes within the odontoblasts take place before inflammatory changes within the pulp occur.11 This can lead to complete cell death and replacement by odontoprogenitor cells from the subjacent cell rich layer. Differentiation of these mesenchymal cells into odontoblast-like cells, can lead to the production of reparative dentine which, depending on the severity of the carious lesion, can be irregular with cellular inclusions or if less aggressive resemble normal tubular dentine.