A new study highlights the importance of oral hygiene for people with type 2 diabetes, after finding that those with the condition may have better blood glucose levels if they look after their teeth.
Type 2 diabetes develops when the body's cells stop responding to the hormone insulin. This is a process known as insulin resistance. Blood glucose levels become too high as a result.
Without effective management of blood glucose levels, a number of serious complications may arise, including nerve damage, or neuropathy, eye problems such as glaucoma and cataracts, and skin conditions.
Previous research has also shown that there is a two-way link between type 2 diabetes and gum disease, or periodontitis; individuals with type 2 diabetes are at greater risk of developing gum disease, and gum disease may increase the risk of type 2 diabetes.
The new study — recently published in The Journal of Clinical Periodontology — suggests that for people who already have type 2 diabetes, good dental hygiene could be key for managing blood glucose levels.
Led by Miquel Viñas — a professor of microbiology at the University of Barcelona in Spain — the study included 90 adults who had an average hemoglobin A1c (HbA1c) level of 7.7 percent, constituting a diagnosis of type 2 diabetes.
The adults were randomized to one of two groups for 6 months. One of these groups received oral health instructions, as well as scaling and root planing, a non-surgical form of "deep cleaning" that removes tartar and plaque from the surface of the teeth and below the gums.
The other group — the controls — received oral health instructions plus supragingival removal of plaque and tartar, meaning that plaque and tartar are removed from above the gum line only.
Both groups had their HbA1c levels, fasting plasma glucose, and oral bacteria levels measured at 3 and 6 months after the start of the study.
The results revealed that the group that received the deep cleaning experienced significant improvements in HbA1c levels and fasting plasma glucose, while the control group saw no improvements.
The team notes that, in most cases, these improvements corresponded with oral bacteria levels. Previous research has shown that oral bacteria may play an important role in diabetes.
So, it seems that good oral hygiene and regular dental checkups may aid good blood glucose management for people with type 2 diabetes.
The adults were randomized to one of two groups for 6 months. One of these groups received oral health instructions, as well as scaling and root planing, a non-surgical form of "deep cleaning" that removes tartar and plaque from the surface of the teeth and below the gums.
The other group — the controls — received oral health instructions plus supragingival removal of plaque and tartar, meaning that plaque and tartar are removed from above the gum line only.
Both groups had their HbA1c levels, fasting plasma glucose, and oral bacteria levels measured at 3 and 6 months after the start of the study.
The results revealed that the group that received the deep cleaning experienced significant improvements in HbA1c levels and fasting plasma glucose, while the control group saw no improvements.
The team notes that, in most cases, these improvements corresponded with oral bacteria levels. Previous research has shown that oral bacteria may play an important role in diabetes.
So, it seems that good oral hygiene and regular dental checkups may aid good blood glucose management for people with type 2 diabetes.
"The main conclusion of the study is that the non-surgical treatment of periodontitis improves the glycemic status and levels of glycated hemoglobin, and therefore proves the great importance of oral health in these patients."
Study co-author José López-López, University of Barcelona
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