PPT-Dentin

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. 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 Dr . Rakesh. Kumar . Yadav. INTRODUCTION. Most of the teeth can be restored with amalgam and composite but if large crown portion lost due to caries or some other reasons, the remaining tooth structure is decrease and difficult to obtained resistance and retention form so prepare dentine lock and slot but when these retention features are insufficient to provide desired retention then pin supported restorations are used. . 2008;36:536–541. Before 2004 :. Apexification. :. Apexification. has proven to be highly predictable . increased susceptibility to cervical fracture . The . artificial. apical barrier technique . . Pearls. Mastering The Art and Science of . Esthetic . Dentistry. . Dr. Steven J. Hill . BSc. , DMD, AAACD.. EP#1: Bondable . Dentin. Esthetic. . Pearls. Problem: Patient presents with a broken veneer. . 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 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. 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.. Determines the shape of the crown.. Physically & chemically the dentin closely resembles the bone.. The main morphologic . difference between bone & dentin. is that some of the osteoblasts that form bone marrow enclosed within its matrix substance as osteocytes, whereas the dentin contains only the processes of the cells that form it.. nerves. Nerve fibers were shown to accompany 30 to 70% of the . odontoblastic. process and these are referred to as . intratubular. nerves(within). Dentinal tubules contain numerous nerve endings in the pre- dentin and inner dentin Most of these small . 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 . for Tri-County SMILES. Bill Maas. April 2, 2020. Supplemented with slides from . Jeremy Horst, Elevate Oral Care Webinar, March 26, 2020. “The actual depth of penetration of a carious lesion is greater than it appears on the radiograph.”. odontoblasts. have differentiated and begin collagen production. . Dentinogenesis. factors like TGF, IGF and BMP which are present in the inner enamel epithelium, are released and these are taken up by the . 1 Abnomalitiesof teethEnvironmental alterationsDevelopmental alterations Effects on tooth structure developmentLocalizedPostdevelopmentalstructure lossDiscoloration of teethes of eruption Local factor