Bariatric Surgery and Oral Health Interactions

Bariatric surgery encompasses a range of procedures designed to induce substantial and sustained weight loss by altering the gastrointestinal tract. While these interventions offer profound metabolic benefits, they also provoke changes in dietary habits, gastric physiology and systemic inflammation that can impact the oral environment. Post-surgical dietary restrictions and rapid weight loss often lead to increased acidic intake, episodes of vomiting and gastroesophageal reflux, which together accelerate tooth wear and enamel erosion. Concurrently, shifts in systemic inflammatory markers and improvements in glycaemic control may ameliorate periodontal inflammation, yet the balance of risk and benefit varies with procedure type and patient comorbidities. Salivary gland function may be altered by both mechanical and neurohormonal factors, affecting salivary flow and buffering capacity. Changes in the composition of the oral microbiota, including colonisation by gastro-derived species, further modulate caries risk and periodontal health. Understanding these multifactorial interactions is essential for optimising oral care protocols and interprofessional collaboration in the long-term management of bariatric patients.

Research from Nature Portfolio

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Bariatric Surgery and Oral Health Interactions publication trend

The graph below shows the total number of articles in bariatric surgery and oral health interactions across all publications each year (not limited to Nature Index journals).

Technical terms

Bariatric surgery: Surgical interventions on the stomach or intestines to induce weight loss.

Periodontitis: Chronic inflammatory disease affecting the supporting structures of the teeth, leading to attachment loss and bone resorption.

Gastroesophageal reflux: Backflow of gastric contents into the oesophagus, often associated with acid exposure and mucosal irritation.

Tooth wear: Irreversible loss of dental hard tissues through mechanical or chemical processes, including erosion, abrasion and attrition.

Salivary flow: Rate of saliva production, critical for buffering acids, antimicrobial defence and oral lubrication.

References

1. Impact of sleeve gastrectomy on the periodontal status of patients with and without type 2 diabetes: a 1-year prospective real-world study. Frontiers in Endocrinology (2024).
2. BARIATRIC SURGERY IMPACT ON GASTROESOPHAGEAL REFLUX AND DENTAL WEAR: A SYSTEMATIC REVIEW. ABCD Arquivos Brasileiros de Cirurgia Digestiva (São Paulo) (2019).
3. Obesity, salivary glands and oral pathology. Colombia Medica (2018).
4. Frequency of periodontal pathogens and Helicobacter pylori in the mouths and stomachs of obese individuals submitted to bariatric surgery: a cross-sectional study. Journal of Applied Oral Science (2016).