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 (dĕn′tĭn) or den·tine (-tēn′)
The main, calcareous part of a tooth, beneath the enamel and surrounding the pulp chamber and root canals.

den′tin·al (dĕn′tə-nəl, dĕn-tē′-) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Rhodamine B dye was used in the current study because of its smaller particle size, easy visualization and large diffusion of the dye into dentinal tubules.17 Mineral Trioxide Aggregate consists of calcium oxide that reacts with water to produce calcium hydroxide that makes it alkaline.
In this study, G2 (CHX with solvent) and G4 (NaOCl with solvent) groups demonstrated the highest degree of filling material remnants in dentinal walls, with no statistically significant difference between them; thus, the second null hypothesis that there are no differences in the cleaning ability when using or not using a solvent during endodontic retreatment was rejected.
[1-3] Dentinal hypersensitivity is a very common clinical problem affecting the adult population.
This process can be potentiated in teeth with pulp necrosis because bacteria and their metabolic products can diffuse through the dentinal tubules, acting as a stimulant to inflammation on the external root surface.
Material penetrations into the dentinal tubules and reflection of discoloration through hard tissues have been indicated as the principal mechanisms of tooth discoloration over time (1,2).
Additionally, the evaluation revealed that the specimens had increased predentin, marked globular dentine with hipomineralized areas, dentinal clefts and dilated dentinal tubules (Figures 6,7).
ECL corresponded to teeth with modified ICDAS codes 1-3, while caries history took into account teeth with dentinal lesions and the decayed, missing and filled teeth (D4-6 MFT).
[3] Enterococcus faecalis can colonize the dentinal tubules and reinfect the obturated root canal as it can survive chemomechanical instrumentation and intracanal medication.
The smear layer also reduces the penetration of irrigants, medicaments, and sealers into dentinal tubules (3, 4).