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Journal: Elsevier

Abstract

Objective

This systematic review analyzes the effects of smoking cessation on oral health outcomes in individuals with type 2 diabetes.

Data

The review followed PRISMA guidelines, and the protocol was registered on PROSPERO (CRD42024604271). Risk of bias was assessed using the Joanna Briggs Institute’s critical appraisal tools.

Sources

PubMed, Scopus, and Web of Science were searched on November 7, 2024, alongside references from highly cited journals and conference proceedings. No language or date restrictions were applied.

Study Selection

Inclusion criteria were human clinical studies (randomized controlled trials, cohort, case-control, or cross-sectional studies) involving patients with type 2 diabetes, stratified by smoking status (former, current, never smokers), assessing oral health outcomes (e.g., periodontal disease, caries). Studies without detailed smoking status data were excluded.

Results

The search retrieved 549 studies, of which 4 (N = 926 participants) met the inclusion criteria. These studies examined smoking status in relation to periodontitis progression and response to periodontal therapy. Overall, the effects smoking cessation in improving periodontal outcomes in this population appears limited. However, methodological limitations were identified, and the studies may have been underpowered for the smoking status subgroup.

Conclusion

Evidence on the impact of smoking cessation on oral health in patients with type 2 diabetes remains inconclusive, as large prospective studies specifically designed for this purpose are lacking. While smoking cessation benefits oral health in the general population, its effects on oral outcomes in patients with diabetes remain unclear. Further research is needed to elucidate its impact on patients with type 2 diabetes.

Clinical Significance

A multidisciplinary approach to managing diabetic patients is essential, where dentists not only address oral health but also support healthy behaviors, including smoking cessation, to improve overall diabetes-related complications.