Related Experiment Video
Updated: Aug 10, 2026

Induction and Diverse Assessment Indicators of Experimental Autoimmune Encephalomyelitis
Published on: September 9, 2022
Increased Risk for Acute Periapical Abscesses in Multiple Sclerosis Patients and the Possible Association with
1University of Southern California, Los Angeles, California.
Introduction:
Multiple sclerosis (MS) is a severe inflammatory neuroimmune degenerative condition affecting more than 2 million individuals worldwide. The purpose of this study was to assess the prevalence of acute periapical abscesses in patients with MS and to evaluate whether acute periapical abscesses (PAs) are more likely to affect patients who were previously infected by Epstein-Barr virus (EBV).
Methods:
Integrated data of hospital patients were used. Data from the corresponding diagnosis codes for MS and acute PA were retrieved by querying the appropriate International Classification of Diseases, Tenth Revision codes in the database.
Results:
Of the total hospital patient population, 0.18% were diagnosed with a history of MS. Females were more affected than males 3.25-fold. Whites were more affected than African Americans 6-fold. Whites were more affected than African Americans combined with other ethnicities 3.6-fold. The odds ratio (OR) for acute PAs in patients with a history of MS was 2.2 (P < .0001). After adjustment for diabetes mellitus comorbidity, the OR for acute PAs in patients with a history of MS was 2.6. After adjustment for cardiovascular disease comorbidity, the OR for acute PAs in patients with a history of MS was 1.27. Of the patients who presented with PAs, 0.2% were diagnosed with a history of EBV infection. The OR was 3.98, and the difference in prevalence was statistically significant (P < .0001).
Conclusions:
Under the conditions of this cross-sectional study, it appears that the prevalence of acute PAs is higher in patients with MS and that EBV may play a role.
Insights
Patients with multiple sclerosis (MS) have a higher prevalence of acute periapical abscesses (PAs). Epstein-Barr virus (EBV) infection may also increase the risk of PAs in MS patients.
Area of Science:
- Neuroimmunology
- Oral Medicine
- Infectious Disease Epidemiology
Background:
- Multiple sclerosis (MS) is a significant neuroinflammatory and degenerative condition impacting over 2 million people globally.
- Acute periapical abscesses (PAs) are a common dental infection with potential systemic implications.
Purpose of the Study:
- To determine the prevalence of acute PAs in individuals diagnosed with MS.
- To investigate the association between prior Epstein-Barr virus (EBV) infection and the occurrence of acute PAs in MS patients.
Main Methods:
- Utilized integrated hospital patient data, extracting International Classification of Diseases, Tenth Revision codes for MS and acute PAs.
- Conducted a cross-sectional analysis to calculate odds ratios (OR) and assess statistical significance.
Main Results:
- The prevalence of MS in the hospital population was 0.18%.
- Patients with MS had a significantly higher odds ratio (OR=2.2) for acute PAs, which persisted after adjusting for diabetes and cardiovascular disease comorbidities.
- A history of Epstein-Barr virus (EBV) infection was associated with a substantially increased odds ratio (OR=3.98) for acute PAs, a statistically significant finding.
Conclusions:
- This study suggests a higher prevalence of acute PAs in patients with multiple sclerosis.
- Epstein-Barr virus (EBV) infection appears to be a potential contributing factor to the increased risk of acute PAs in MS patients.
More Related Videos
Related Concept Videos
Amebiasis
Bacterial Meningitis II: Pathophysiology
Encephalitis l: Introduction
Encephalitis ll: Pathophysiology
Brain Abscess l: Introduction
Multiple Sclerosis l: Introduction

