Periodontitis and respiratory infections - exploring the oral-systemic link.

Area of Science:

• Oral Health and Systemic Disease
• Microbiology and Immunology

Background:

• Periodontitis is a prevalent chronic inflammatory condition with significant public health implications.
• An imbalance in oral microbiota, favoring pathogens, drives periodontitis pathogenesis.
• Periodontitis impacts not only oral health but also has systemic effects, including links to respiratory infections.

Purpose of the Study:

• To review the link between periodontitis and respiratory infections.
• To explore the mechanisms, transmission pathways, and epidemiological evidence of this association.
• To identify research gaps and suggest strategies for prevention and treatment.

Main Methods:

• A narrative review of literature from PubMed, Cochrane, and Google Scholar.
• Keywords included "Periodontitis," "Respiratory," "Infections," "Tuberculosis," "COVID-19," "Pneumonia," "Asthma," and "COPD."
• Focus on studies published within the last 15 years.

Main Results:

• Periodontal pockets can harbor pathogens that may migrate to the respiratory tract via aspiration or circulation.
• Evidence supports various biological mechanisms and inflammatory pathways connecting periodontitis to respiratory infections.
• Some studies show conflicting or inconclusive results regarding the strength of the link.

Conclusions:

• The oral-systemic link between periodontitis and respiratory infections is significant.
• Improving oral hygiene is a potential strategy to reduce respiratory disease burden, particularly in the elderly and high-risk groups.
• Further research is needed to develop targeted preventive and therapeutic interventions.