Impact of Peri-Implant Inflammation on Metabolic Syndrome Factors: A Systematic Review

Abstract

This systematic review aims to evaluate the impact of peri-implantitis on the components of metabolic syndrome, and to provide suggestions on the management of peri-implantitis patients with metabolic disorders. A search for relevant records was performed in MEDLINE, EMBASE, and Global Health on 1st September 2023. Clinical trials, cohort studies, cross-sectional studies, and case-control studies containing comparisons of metabolic factors between patients with and without peri-implantitis were considered eligible. Study quality was assessed using the Newcastle–Ottawa scale. Out of 1158 records identified, 5 cross-sectional studies were eligible for final inclusion. Two studies reported significant differences in the lipid profile of patients with peri-implantitis, one of which reported higher total cholesterol and LDL cholesterol levels, while the other reported higher triglyceride levels. Another study reported significantly higher HbA1c levels in patients with peri-implantitis. The remaining two studies containing comparisons of BMI between patients with and without peri-implantitis indicated no significant differences. Overall, there are suggestions that peri-implantitis is associated with altered metabolic factors, including lipid profile and HbA1c level. However, there is not enough evidence to support these clinical implications due to the paucity of related literature and the low evidence level of the included studies. More investigations with stronger evidence levels are needed to narrow this gap of knowledge.