Dentine is a permeable mineralised tissue, made with a special geometry. The geometry presents micro tubules with variable dimensions and densities. Dentine can be subdivided into four different classes, depending on the number and shape of the tubules. Dentine can be directly exposed to high or low temperature, when the tooth is under restoration or due to gingival retraction. This temperature variation can induce pain into the patient. This investigation aims to validate the numerical model using experimental data obtained from tests developed in dog teeth. According to this investigation, the rate of temperature, threshold temperature and the neural activity are correlated allowing for a positive correlation between the thermal stimulus and pain.