Dentin permeability: the basis for understanding pulp reactions and adhesive technology.
Permeability involves the passage of fluids, ions, molecules, particulate matter and bacteria into and through a substance or tissue under different and varying conditions. The permeability of the dentin is essential to support the physiology and reaction patterns of the pulp-dentin organ. Nutrients and impulses are transported from the pulp via the odontoblast process and the contents of its tubules maintain the dentin as a vital tissue. However, the main interest of this paper focuses on penetration from the outside towards the pulp rather than from the pulp towards the outside. The present overview centers on the dentinal tubules; how they are formed and how they change as a result of normal and abnormal function, age, and pathological processes and the effect of these processes on the permeability of dentin. Particular attention is focused on the patency of the dentinal tubules.This overview is largely based on the authors own research, clinical insights and active participation in continuing dental education over the last 50 years. It is not a review of the literature related to the permeability of dentin. Rather it presents interpretation of results related to the permeability of dentin based on experience and opinions acquired over a lifetime in dental research.
Mjör
Ivar A
IA
University of Florida College of Dentistry, P.O. Box 100415, Gainesville FL 32610, USA. imjor@dental.ufl.edu
D000375:Aging; D001840:Dental Bonding; D003731:Dental Caries / Q000473:pathology; D003782:Dental Pulp / Q000502:physiology; D003804:Dentin / Q000033:anatomy & histology / Q000187:drug effects / Q000648:ultrastructure*; D003806:Dentin Permeability / Q000187:drug effects / Q000502:physiology; D003807:Dentin Sensitivity / Q000473:pathology; D003809:Dentin, Secondary / Q000378:metabolism; D017220:Dentin-Bonding Agents / Q000494:pharmacology*; D019234:Dentinal Fluid / Q000502:physiology; D003810:Dentinogenesis; D006801:Humans; D006874:Hydrostatic Pressure; D009804:Odontoblasts / Q000378:metabolism; D016369:Smear Layer; D019217:Tooth Attrition / Q000473:pathology
D017220:Dentin-Bonding Agents