The sensory mechanism in human dentin as revealed by evaporation and mechanical removal of dentin.
Dentinal pain in connection with mechanical stimulation i.e. probing, chiseling and initial drilling may be due to removal of fluid from the dentinal tubules. Loss of fluid due to "normal" evaporation from exposed dentin may produce an outward flow in the dentinal tubules rapid enough to cause pain and within a few minutes odontoblast aspiration.
D002197:Capillary Action; D002467:Cell Nucleus / Q000648:ultrastructure; D002648:Child; D003804:Dentin / Q000033:anatomy & histology* / Q000293:injuries / Q000502:physiology / Q000601:surgery / Q000648:ultrastructure; D003890:Desiccation; D006801:Humans; D009804:Odontoblasts / Q000648:ultrastructure; D010146:Pain / Q000209:etiology; D012677:Sensation / Q000502:physiology*; D014867:Water
D014867:Water