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Oxidative and inflammatory status in Type 2 diabetes patients with periodontitis


  • Conflict of interest and source of funding
    The authors declare that there are no conflicts of interest in this study.
    No external funding apart from the support of the authors' institutions was available for this study.

Edith M. Allen
Department of Restorative Dentistry
Cork University Dental School and Hospital


Allen EM, Matthews JB, O' Halloran DJ, Griffiths HR, Chapple IL: Oxidative and inflammatory status in Type 2 diabetes patients with periodontitis. J Clin Periodontol 2011; 38: 894–901. 38: 894–901. doi: 10.1111/j.1600-051X.2011.01764.x.


Aim: To determine the impact of periodontitis on oxidative/inflammatory status and diabetes control in Type 2 diabetes.

Materials and Methods: A comparative study of 20 Type 2 diabetes patients with periodontitis [body mass index (BMI) 31+5], 20-age/gender-matched, non-periodontitis Type 2 diabetes controls (BMI 29+6) and 20 non-diabetes periodontitis controls (BMI 25+4) had periodontal examinations and fasting blood samples collected. Oxidative stress was determined by plasma small molecule antioxidant capacity (pSMAC) and protein carbonyl levels; inflammatory status by total/differential leucocytes, fibrinogen and high sensitivity C-reactive protein (hsCRP); diabetes status by fasting glucose, HbA1c, lipid profile, insulin resistance and secretion. Statistical analysis was performed using SPSS.

Results: pSMAC was lower (p=0.03) and protein carbonyls higher (p=0.007) in Type 2 diabetes patients with periodontitis compared with those without periodontitis. Periodontitis was associated with significantly higher HbA1c (p=0.002) and fasting glucose levels (p=0.04) and with lower β-cell function (HOMA-β; p=0.01) in diabetes patients. Periodontitis had little effect on inflammatory markers or lipid profiles, but Type 2 diabetes patients with periodontitis had higher levels of hsCRP than those without diabetes (p=0.004) and the lowest levels of HDL-cholesterol of all groups.

Conclusion: Periodontitis is associated with increased oxidative stress and compromised glycaemic control in Type 2 diabetes patients.

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