How can sensitive dentine become hypersensitive and can it be reversed?

Area of Science:

• Oral Biology
• Endodontics
• Periodontology

Background:

• The pulpo-dentine complex exhibits reactivity to mechanical and immunological stimuli.
• These reactions may influence dentine sensitivity following periodontal procedures.
• Mechanisms include neurogenic inflammation, increased fluid flow, nerve sprouting, and ion channel upregulation.

Purpose of the Study:

• To review studies on pulpo-dentine complex reactivity.
• To hypothesize the application of these reactions to dentine sensitivity post-periodontal procedures.
• To raise awareness of dentine sensitivity complexities for future therapeutic development.

Main Methods:

• Literature review of studies in oral biology and endodontics.
• Analysis of mechanisms contributing to dentine sensitivity.
• Hypothetical extrapolation to periodontal contexts.

Main Results:

• Neurogenic inflammation increases outward fluid flow in exposed dentinal tubules, enhancing sensitivity.
• Inflammation-related nerve sprouting leads to increased innervation of dentinal tubules.
• Upregulation of sensitive ion channels in pulpal nerves contributes to heightened sensitivity.

Conclusions:

• Dentine sensitivity is a complex issue involving multiple biological responses.
• Further research is needed to develop targeted therapies for dentine sensitivity.
• Understanding these mechanisms can guide the development of agents to mitigate or block sensitivity.