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Abnormal Interhemispheric Functional Connectivity in Acute Pericoronitis: A Resting-State MRI Study.

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Toothache from acute pericoronitis (AP) alters brain connectivity. This study found reduced thalamic and increased frontal gyrus connectivity in AP patients, impacting key brain networks.

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Area of Science:

  • Neuroscience
  • Medical Imaging
  • Dental Research

Background:

  • Acute pericoronitis (AP) is a common cause of toothache.
  • Toothache can affect brain function, but brain hemisphere interactions are understudied.

Purpose of the Study:

  • To investigate brain functional connectivity changes in patients with AP.
  • To explore the impact of toothache on interhemispheric brain communication.

Main Methods:

  • Resting-state functional magnetic resonance imaging (rs-MRI) was used.
  • Voxel mirror homotopic connectivity (VMHC) analyzed differences between 34 AP patients and 34 controls.
  • Functional connectivity analysis explored network changes.

Main Results:

  • AP patients showed reduced VMHC in the thalamus and increased VMHC in the inferior frontal gyrus.
  • Significant alterations were observed in default, frontoparietal, cerebellar, and pain networks.
  • Connectivity changes correlated with clinical pain parameters.

Conclusions:

  • Toothache associated with AP induces widespread changes in brain functional connectivity.
  • These findings provide new insights into the neurophysiology of pain processing.