PPT-Dentin hypersensitivity By

Aung Oo DEN 1114 D218 What is dentin hypersensitivity A transient sharp pain arising from exposed dentin in response to a stimulus Pain short in duration very mild to very intense. Le B an b th close uni bal an th uni spher o E respectively A poin x S i a extreme point of B if x y z2 wit yz B implie x y z A poin x G SE a strongly exposed point of B i ther i a uni vecto f E s tha fx an give an sequenc xk i BE wit fxk w ca Dentin. – . Composition. , . Formation. , . and. . Structures. Dentinogenesis. O. rigin of the dentin. Dentin is formed by cells called odontoblasts that defferentiated from ectomesenchymal cells of the dental papilla following an organizing influence that emanents from the inner dental epithelium.. immunology. What is hypersensitivity?. the violent reaction of the immune system leading to severe symptoms and even death in . sensitised. animal when it is re-exposed to the same antigen for the second time. It is nothing but allergy.. . (Allergy and Anaphylaxis. Type I Hypersensitivity. . (Allergy and Anaphylaxis. ). IgE. -mediated hypersensitivity. Time: 2-30 . mins. Mechanism: . results from . IgE. antibodies bound to mast cells, when these . 1 Basic anatomyand physiology Types of Dentin Dentin Primary physiologic dentin Secondary physiologic dentin Tertiary dentin orreparative dentin orreactionary dentin and/orirregular secondary dentin M . . محمد فهد المسعود 431102617. عاصم فهد . الدهيش. 430106507. عوض . عبدالله. . الحربي 431102322. Introduction. the immune response uses multiple strategies to reduce damage to self by turning off responses when pathogen is cleared and avoiding reactions to self antigens. However, these checks and balances can break down, leading to immune-mediated reactions that are more detrimental than protective. . 323 Keywords:desensitizing agents.; dentin/etiologysensitivity; dentin/therapy sensitivity. Introduction Dentinal hypersensitivity (DH) is characterized by shortsharp pain arising from exposed dentine Presented by: Dr. Reza . Hatam. Dental pulp as a connective tissue:. . How respond to irritants? . What makes it prone to degeneration?. Unique environment of dental pulp. Unyielding walls of dentin. . Localized and Systemic Anaphylaxis. Updated: November . 29, . 2016. Folder Title: . IgEAllerNoTP. Chapter 15, 7. th. Edition,. . Kuby. Immunology, pp 485 to 516. Immunology and Medicine. (See Presentation Called “. Excessive immune response in a . sensitized . individual leading to tissue damage.. Types of Hypersensitivity:. Types I,II,III------>Immediate, Abs.. Type IV ------>Delayed, T cells.. Cooms. Refif. . alshawk. (PhD). Lec. 2&3. Hypersensitivity – responding inappropriately to an antigen. Inflammatory response can have deleterious effects. Tissue injury. Disease. death. May develop in course of . Physically and chemically the dentin closely resembles bone. . The . main morphologic difference between bone and dentin is that some of the . osteoblasts . exist on the surface of bone, and when one of . Martina Vasakova Dep artment of Respiratory Medicine 1 st Medical School Charles Un iversity and Thomayer Hospital K Hajecku 45 100 00 Prague Czech Republic martina.vasakova@ftn.cz AIMS  To recogni -Was first termed . anaphylaxis. -can be systematic, which often leads to shock and can be fatal, or localized, which is various atopic reactions . Types of Reactions. There are four types of reactions.