Aim: Aim of the present study was to evaluate the periodontal disease in teeth adjacent to implant with peri-implantitis. Materials and Method: A total of thirty participants in the age range of 25–45 years were enrolled in the present study. Sample sizes of thirty participants were calculated based on pilot study. Informed consent was obtained from all the participants. Inclusion and Exclusion criteria were implied to select the participants. Depending upon presence or absence of peri‑implantitis, participants were divided into two groups. Group A (15) was with peri‑implantitis and group B (15) was without peri‑ implantitis. In all participants, William graduated periodontal probe was used to calculate the probing depth (PD) around the implant as well as around the teeth adjacent to the implant. Parameters such as Bleeding on probing (BOP), Pocket probing depth (PPD), and Clinical attachment loss (CAL) were assessed. Results: The present study consists of total 30 participants (12 males’ and18 females) with dental implants. Clinical attachment loss was 5.48 ± 0.26 in group A and 3.98 ± 0.18 in group B (P = 0.001) around implants. Pocket probing depth (PPD) was 4.56 ± 0.37 in group A and 2.84 ± 0.10 in group B around adjacent teeth (P = 0.001). Bleeding on probing (BOP) was 2.72 ± 016 in group A and 0.98 ± 0.14 in group B. Conclusion: The present study concluded that, as peri-implant diseases have increased prevalence in clinical practice, teeth adjacent to dental implant plays an important role in deciding the success or failure of implant. Maintenance of periodontal health is of paramount importance for successful implant therapy.