Comment & Response
May 14, 2014

Hemoglobin A1c Levels Among Patients With Diabetes Receiving Nonsurgical Periodontal Treatment

Author Affiliations
  • 1Dental Faculty, Toulouse University Hospital, Toulouse, France

Copyright 2014 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.

JAMA. 2014;311(18):1920-1921. doi:10.1001/jama.2014.2225

To the Editor The study by Engebretson and colleagues1 adds knowledge about the effect of periodontal treatment on glycemic control in patients with type 2 diabetes and moderate to advanced chronic periodontitis. The authors of this multicenter randomized study (the Diabetes and Periodontal Therapy Trial [DPTT]) concluded that nonsurgical periodontal therapy did not improve HbA1c values. Despite its high internal validity, this trial raises some important interpretation issues, particularly regarding the interventions that were compared.

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