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Periodontal treatment and its effects on glycemic control: a review of the evidence.

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  • 1Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor 48109-1078, USA.


Persisting poor glycemic control has been shown to be associated with the incidence and progression of diabetes-related complications. The bulk of oral health-related research has focused on the impact of diabetes on periodontal health, yet there are several lines of evidence to support the plausibility of the notion that periodontal infections contribute to problems with glycemic control. This article reviews the body of English-language literature containing reports of clinical research that has considered the relationship between treatment of periodontal diseases and improvement in glycemic control in humans. Although there is supportive clinical and epidemiologic evidence, equivocal and contrary evidence also exists. It is concluded from this review that the quantity, breadth, and strength of evidence-based knowledge are currently insufficient to establish periodontal therapy as influential in improving glycemic control in either type 1 or type 2 diabetes. Further rigorous, systematic study of the effects of treating periodontal infection on glycemic control is warranted.

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