Beyond body weight: the systemic effects of obesity on periodontal health

Abstract

Background: Obesity promotes "metaflammation" – a chronic, low-grade systemic inflammatory state closely tied to periodontitis. This pathological synergy accelerates the destruction of tooth-supporting tissues through shared immuno-metabolic pathways. Aim: The aim of this study is to synthesize current scientific evidence regarding the systemic effects of obesity on periodontal health, focusing on the molecular, microbiological, and clinical mechanisms that link these two chronic conditions. Materials and Methods: A comprehensive review of databases, including PubMed, Scopus, and Quality in Sport, was conducted to identify systematic reviews and clinical trials. The investigation concentrated on adipokine profiles, clinical parameters (CAL, PD, BOP), and the influence of metabolic interventions on periodontal outcomes. Results Obesity accelerates alveolar bone loss by disrupting leptin/adiponectin and the RANKL/OPG axis. Systemic oxidative stress (elevated ROS, MDA) and endotoxemia (LPS/TLR-4) worsen local inflammation, which is sustained by HDAC1-mediated epigenetic memory. Clinically, obesity increases periodontitis risk by 31–35% (OR 1.31–1.35) and degrades pediatric oral health (DMFT, OHRQoL). Visceral adiposity impairs responses to non-surgical periodontal therapy (SRP), but weight loss restores healing and clinical attachment gain. Conclusions Adipose tissue dysfunction drives periodontal breakdown by reprogramming host immune and epigenetic landscapes. Mechanical debridement (SRP) often fails alone under unmanaged metabolic stress. Long-term stability requires interdisciplinary care combining oral therapy with metabolic stabilization and weight management.