The effect of electronic cigarette use on peri-implant conditions in men: a systematic review and meta-analysis

Objective. To systematically review the effect of electronic cigarette (e-cigarette) use on clinical, radiographic, and immunologic peri-implant parameters in males.Study Design. A comprehensive search of indexed databases was conducted to identify studies reporting data on both e-cigarette users and nonsmokers with implant-supported prosthesis with >= 1-year in function, up to May 2022. Marginal bone loss (MBL), probing depth (PD), plaque index (PI), and bleeding on probing (BOP) were recorded. Peri-implant sulcular fluid volume (PISF), tumor necrosis factor alpha (TNF-a) and interleukin 1b(IL-b) levels were also assessed. A meta-analysis was performed using ran-dom-effect models to determine the effect of e-cigarette use in primary and secondary outcomes.Results. Four cross-sectional studies were included with a total of 327 participants (165 e-cigarette users and 162 nonsmokers). All studies showed greater MBL, PI, PD, and lower BOP in e-cigarette users compared with never smokers. The meta-analysis indi-cated significant heterogeneity for all outcomes except MBL for distal implant surfaces, with the mean difference between e -ciga-rette users and nonsmokers of 0.89 mm (95% CI: 0.67-1.11, P < .01). The PISF volume, TNF-a, and IL-1b levels were increased in e-cigarette users (P < .01) with no heterogeneity present between studies.Conclusions. E-cigarette use shows a negative effect on clinical, radiographic, and immunologic parameters of dental implants. (Oral Surg Oral Med Oral Pathol Oral Radiol 2023;135:492-500)