Sabancı A.Eltas A.Celik B.Otlu B.2024-08-042024-08-0420222212-4268https://doi.org/10.1016/j.jobcr.2022.05.007https://hdl.handle.net/11616/91962Background: Type 2 diabetes mellitus (T2DM) is an important systemic disease, predisposing patients to inflammatory conditions including periodontitis and peri-implantitis and negatively affects dental implant success through various mechanisms. This study aimed to compare clinical and microbiological findings of individuals with dental implants with or without T2DM. Methods: A total of 82 dental implants which were in function >3 years, were involved. The participants were divided into 2 groups; T2DM (n: 45 implants) and systemically healthy controls (n:37 implants). Periodontal indexes (Bleeding on probing (BOP), plaque index (PI), pocket depth (PD), and radiographic bone loss were recorded around implants in function >3 years. Subgingival microbiological samples were also collected from the peri-implant sites. Pathogens include Fusobacterium nucleatum, Camphylobacter rectus, Porphyromonas gingivalis, Tannerella forsythia, Actinobacillus actinomycetemcomitans, Treponema denticola, Prevotella intermedia, Peptostreptococcus micros, Eikinella corrodens, Prevotella nigrescens were evaluated. Results: Peri-implant heatlh was determined in systemically healthy (54.1%) and type 2 diabetes patients (24.4%). Peri-implantitis was also evident in systemically healthy (8.1%) and T2DM (35.6%) groups. No differences was found in shallow peri-implant pockets in both groups in terms of the prevelance of all evaluated bacteria (p > 0.05). However, C. rectus, P. gingivalis, A. actinomycetemcomitans and T. forsythia were isolated more frequently in deep peri-implant pockets in systemically healthy patients compared to T2DM patients (p < 0.05). Conclusions: Evaluted periodontal pathogens may not be affected by the presence of T2DM in implants. T2DM may not significantly alter the levels of specific periodontal pathogens in shallow and deep peri-implant pockets. C. rectus, P. gingivalis, A. actinomycetemcomitans and T. forsythia may be affected by T2DM in implants in deep pockets. © 2022 Craniofacial Research Foundationeninfo:eu-repo/semantics/openAccessDental implantDiabetes mellitusMicrofloraPeri-implant pocketArticle12440540910.1016/j.jobcr.2022.05.0072-s2.0-85130559350Q2