Evaluating the association between gingival crevicular blood glucose levels and finger capillary blood glucose levels according to periodontal status

Abstract Objectives The aim of this study was to evaluate the association between gingival crevicular blood glucose levels (GCBG) and finger capillary blood glucose levels (FCBG) according to the periodontal status of patients. Materials and methods In this case–control study, 80 patients were divided into 4 groups according to their periodontal status. In these patients, an area of the maxillary gingiva with the highest probing depth was selected for blood sampling. Blood glucose obtained from this area and the right fingertip was measured with a glucometer. Data were analyzed using ANOVA and Pearson correlation coefficient with a significance threshold of 0.05. Results The groups studied were matched in regard to their sex and age (P > 0.05). The average FCBG and GCBG were not significantly different according to periodontal status (P > 0.05). The correlation between the FCBG and the GCBG showed a significant positive correlation in the total number of participants (P < 0.05, r = 0.531). Conclusion The study observed a positive association between GCBG and FCBG. However, the relationship with periodontal status appeared to be relatively weak. Further research may be needed to determine the potential efficacy of GCBG in diabetes screening during periodontal examinations. Clinical relevance: Most patients with diabetes do not have proper periodontal health, so it may be helpful to screen for diabetes during periodontal examinations