Abstract Aim: to compare the serum vitamin D, HbA1c and vitamin B12 levels in patients with gingivitis and four different periodontitis stages diagnosed according to the 2017 Periodontal Disease Classification.

Materials and methods: A total of 606 (378 Female, 228 Male) patients were included in the study. The periodontal status of the patients was diagnosed with gingivitis, stage 1,2,3 and 4 periodontitis groups were formed. HbA1c, vitamin D and vitamin B12 values of the patients were compared and analyzed.

Result:

Conclusion:

bstract Aim: to compare the serum vitamin D, HbA1c and vitamin B12 levels in patients with gingivitis and four different periodontitis stages diagnosed according to the 2017 Periodontal Disease Classification as determined by the American Academy of Periodontology and the European Federation of Periodontology (AAP-EFP) Materials and methods: A total of 606 (378 Female, 228 Male) patients were included in the study. The periodontal status of the patients was diagnosed with gingivitis, stage 1,2,3 and 4 periodontitis groups were formed. HbA1c, vitamin D and vitamin B12 values of the patients were compared and analyzed.

Inclusion Criteria:

• Patients diagnosed with gingivitis or periodontitis with complete periodontal diagnostic data (Gingival Index(Löe, 1967), Plaque Index(Löe, 1967), Periodontal pocket depths(PD), Clinical Attachment loss (CAL), Radiological data- Interdental Bone loss (IBL) data
• Non-smoker
• Vit D, HbA1c and B12 vit in blood on the date of application to the clinic and/or in the last 3 months. Patients with data on values were included in the study.

Exclusion Criteria:

• Patients with missing data and not allowing data use
• Smoker
• The data of pregnant and lactating patients were not included in the study.

Patients between the ages of 18-80, who applied to the clinic due to periodontal disease, and had serum HbA1c, vitamin D, vitamin B12 values in the hospital archive within 3 months from the date of clinical application.