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Summary Of: Dentin
seventy percent of dentin consists of the mineral... Dentin consists of microscopic channels... which radiate outward through the dentin from the pulp to the exterior cementum or enamel border... dentin has a degree of permeability which can increase the sensation of pain and the rate... dentin continues to form throughout life and can be initiated in response to stimuli... Primary dentin forms most of the tooth... Secondary dentin develops after root formation is complete and forms much slower than primary dentin... Tertiary dentin forms as a biological response to stimuli... are structures that span the entire thickness of dentin and form as a result of the mechanism of dentin formation... From the outer surface of the dentin to the area nearest the pulp... Primary dentin is the outermost layer of dentin and borders the enamel... Secondary dentin is a layer of dentin produced after the root of the tooth is completely formed... Tertiary dentin is created in response to a stimulus... the most prominent dentin in the tooth... Mantle dentin is formed by newly differentiated odontoblasts and forms a layer approximately 150 micrometers wide... Newly secreted dentin is unmineralised and is called predentin... Secondary dentin is formed after root formation is complete... It is the growth of this dentin that causes the decrease in the size of the pulp chamber with age... Tertiary dentin is dentin formed as a reaction to external insult such as caries... where dentin is formed from a pre... Tertiary dentin is only formed by an odontoblast directly affected by stimulus... there would be extensive destruction of dentin and damage to the pulp... Thus tertiary dentin is deposited rapidly... Exposed dentin in humans causes the symptom of... Because dentin is softer than enamel... dentin may be demineralized and stained for... Dentin rates approximately 3 on the... A material similar to dentin forms the hard material that makes up... Encyclodia Page On: Dentin
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