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19 Cards in this Set
- Front
- Back
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When dentin is viewed microscopically what is easily viewed? |
Dentinal tubules and certain types of dentin |
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What is hard to discern while viewing the dentin microscopically? |
Denitnal process within tubules |
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Imbrication lines of von Ebner |
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What are imbrication lines of von Ebner? |
Incremental lines or bands that stain darkly in a section of dentin |
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Imbrication lines are similar to what? |
incremental lines of Retzius noted in enamel |
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What do imbrication lines of von Ebner show? |
the incremental nature of dentin during apposition |
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Lines of von Ebner run in what angle? |
Right angles to the dentinal tubules |
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CONTOUR LINES OF OWEN |
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What are contour lines of Owen? |
number of adjoining parallel imbrication lines |
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Where are contour lines of Owen present? |
Stained section of dentin |
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contour lines of Owen are caused from what? |
disturbance in body metabolism that affects the odontoblasts by altering their formation efforts, and appear together as dark bands |
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What is the most pronounced contour line? |
Neonatal line |
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When do neonatal lines occur ? |
During the trauma of birth |
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Other contour lines can occur in conjunction with the clinically visible what? |
Tetracycline stain |
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What is Tetracycline stain? |
Antibiotic taken systemically during tooth development becomes chemically bound to the dentin in varying amounts |
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TOMES GRANULAR LAYER |
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Where are tomes granular layer most often found? |
in the peripheral part of the dentin beneath the roots cementum adjacent to the DCJ in a stained section of dentin |
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The area of tomes granular layer only looks granular because of why? |
of its spotty microscopic appearance |
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What may tomes granular layer be caused from? |
less mineralized having an increase level of interglobular dentin
presence of branching of the terminal parts of dentinal tubules found near the DCJ |
