RT Journal Article SR Electronic T1 Effects of non-surgical treatment of chronic periodontitis on insulin resistance and glucose tolerance in subjects without diabetes (PARODIA 2 study) JF Journal of Investigative Medicine JO J Investig Med FD BMJ Publishing Group Ltd SP 1377 OP 1381 DO 10.1136/jim-2021-001831 VO 69 IS 7 A1 Arnel Redon Nana Nana A1 Nadia-Flore Tsobgny Tsague A1 Eric Lontchi-Yimagou A1 Charles Bengondo Messanga A1 Aurel Tankeu A1 Jean-Claude Katte A1 Eric Balti Vounsia A1 Mesmin Dehayem A1 Eugene Sobngwi YR 2021 UL http://hw-f5-jim.highwire.org/content/69/7/1377.abstract AB This study aimed to assess the effects of non-surgical periodontal treatment (NSPT) of chronic periodontitis on insulin sensitivity, glucose tolerance, and serum C reactive protein (CRP) level in individuals without diabetes. Twenty individuals without diabetes with chronic periodontitis underwent NSPT, which consisted of complete scaling, polishing, root planing, and irrigation of the periodontal pockets with a 10% povidone-iodine solution. Periodontal indices (plaque index, gingival bleeding index, pocket depth, and clinical attachment loss), insulin sensitivity using the Short Insulin Tolerance Test index (KITT), glucose tolerance derived from oral glucose tolerance test, and serum CRP level were measured before and 3 months after the intervention. This study was carried out at the National Obesity Center of Yaoundé Central Hospital, Cameroon. After 3 months, we observed significant improvement in periodontal parameters (all p<0.001) and insulin sensitivity (3.72 (2.99–4.17) %/min before treatment vs 4.04 (3.67–4.78) %/min after treatment, p=0.001) and significant decrease in serum CRP level (2.35 (1.46–4.18) mg/L before vs 1.53 (1.03–2.12) mg/L after, p=0.033). There was a trend toward improvement in glucose tolerance, although not statistically significant after the intervention. This study suggests that NSPT of chronic periodontitis in individuals without diabetes is associated with increased insulin sensitivity and decreased serum CRP levels.Trial registration number NCT02830113.