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Updated: Jun 18, 2026
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In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint
Published on: March 7, 2014
Summary
Irritated dentinal tubules coagulate and die, prompting the pulp to form a protective barrier of secondary dentine. If this barrier fails, the pulp may also die, indicating dentine death following injury.
Area of Science:
- Dentistry
- Oral Biology
- Dentine Physiology
Background:
- Dentinal tubules are vital structures within teeth.
- Irritation or exposure can compromise tubule integrity and pulp vitality.
Purpose of the Study:
- To investigate the physiological response of dentine and pulp to injury.
- To determine the fate of opened or irritated dentinal tubules and the pulp.
Main Methods:
- Histological examination of injured dentine and pulp.
- Experimental assessment of fluid permeability and sensitivity in dentine.
Main Results:
- Opened dentinal tubules' contents coagulate and die.
- Pulp forms secondary dentine as a protective barrier against dead tubules.
- Injured dentine becomes insensitive and isolated from pulp fluids.
- Secondary dentine formation seals off injured primary tubules.
Conclusions:
- Dentine death occurs when dentinal tubules are significantly irritated or exposed.
- Pulp vitality is threatened by severe dentine injury, potentially leading to pulp necrosis.
- Secondary dentine formation is a crucial defense mechanism to protect the pulp.
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