The prevalence of pulp stones can reach as high as 50% in surveyed samples however pulp stones are estimated to range from 8-9%. Pulpal calcifications are more commonly found in females and more frequently found in maxillary teeth compared to mandibular teeth although the reason is unknown. They are also more common in molar teeth especially first molars compared to second molars and premolars. A systematic review suggested that the reason for this was because the first molars are the first teeth to be located in the mandible (lower jaw) and therefore longer exposure to degenerative changes. It also has larger blood supply.