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Comment & Response
May 14, 2014

Hemoglobin A1c Levels Among Patients With Diabetes Receiving Nonsurgical Periodontal Treatment—Reply

Author Affiliations
  • 1Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, New York
  • 2Department of Preventive Medicine, Stony Brook University School of Medicine, Stony Brook, New York
  • 3Department of Developmental and Surgical Sciences, University of Minnesota, Minneapolis
JAMA. 2014;311(18):1921-1922. doi:10.1001/jama.2014.2231

In Reply Dr Merchant suggests that the relationship between periodontal therapy and glycemic control in persons with type 2 diabetes may vary by BMI. In the DPTT, participants were predominantly obese (72% had a BMI ≥30). Subgroup analyses of different BMI cut points found no effect of periodontal therapy on glycemic control (P ≥ .10) in any subgroup examined. Differences in baseline periodontitis levels, use of antibiotics, and race/ethnicity may also explain the inconsistent findings among studies.

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