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How does dentinal tubule occlusion stop dentin hypersensitivity?

How does dentinal tubule occlusion stop dentin hypersensitivity?

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Expert Solution

Dentinal hypersensitivity

Dentin is protected by hard tissue (enamel and Cementum)

Dentinal hypersensitivity is characterised by short sharp pain due to stimulation by thermal, chemical or any dental pathology

Sensitivity is induced when dentinal tubule is exposed or remain open at dentin surface and parent to the vital pulp

The dentinal tubule contain Tomes fibres extending from odontoblast and communicate with pulp(sensitivity)

Three types of nerve fibres are found, A Delta,Abeta and C fibres, mostly are nonmyelinated.

When there is hypersensitivity , intense activation is needed to activate C fibres- release of neuropeptides like SP and CGRP.

Exposed sensitive dentinal tubule ➡️ pulp irritation ➡️ nerve activation, sprouting, neuropeptides release ➡️ inflammation ➡️ dentine hypersensitivity

So one the management is to do tubal occlusion

Reduction in Dentin permeability

Eg plugging of dental tubule by calcium hydroxide, calcium phosphate, carbonate.

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gladiator answered 11 months ago
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