Perio Reports Vol. 24, No. 1 |
Perio Reports provides easy-to-read research summaries on topics of specific interest to clinicians.
Perio Reports research summaries will be included in each issue to keep you on the cutting edge
of dental hygiene science.
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Why is it Called Oral-Systemic Connection?
It’s hard to avoid this topic today, with a
steady stream of articles and opinion pieces
focusing on the associations between oral
health and systemic health. Despite links
between periodontitis, diabetes and cardiovascular
diseases, the dental profession has
difficulty convincing other health professionals
and the public of the importance of
these connections.
It is a start to associate the mouth to
the rest of the body. A new organization
was recently formed called the American
Society for Oral Systemic Health. But are
we perpetuating the separation of the mouth
and the rest of the body by suggesting that
oral health and systemic health are still
two different things? Oral health is in fact
systemic health.
Two professors at the University of
Manitoba in Winnipeg, Canada, suggest the
terminology should be changed, to ensure
that oral health is recognized as part of systemic
health and not a separate entity. They
suggest using the terms “oral health” and
“overall health” or even “oral” and “non-oral”
health rather than “oral-systemic,” which
unintentionally separates the mouth from
the rest of the body. As an example, they suggest
a physician wouldn’t discuss diabetes, an
endocrine disease of the pancreas, by referring
to the patient’s pancreatic and systemic
health. Since the mouth is part of the body,
oral diseases with an impact on other parts of
the body are in fact systemic diseases and not
oral conditions with systemic influence.
Choose your words
wisely when discussing oral health and
overall health with patients and medical
colleagues, to avoid reinforcing the separation
rather than a whole-body view.
Nogueira-Filho, G., Tenenbaum, H.: So Why Do We Call It the Oral-
Systemic Health Connection? J Can Dent Assoc 77: B36, 2011. |
Diabetes and Dentistry
Diabetes mellitus (DM) is a relatively common metabolic
disorder affecting approximately 10 percent, or 20 million
Americans, with the incidence increasing. DM is a bi-directional
disorder, affecting oral health and oral health affecting DM.
Three primary types of DM are Type 1, Type 2 and gestational
DM. Type 1 accounts for 10 percent and Type 2, 85-90
percent. Gestational DM occurs during pregnancy and in most
cases resolves after childbirth.
Type 1 DM is generally diagnosed in childhood. Insulin
deficiency is caused by autoimmune destruction of pancreatic
beta cells. Onset and diagnosis occur rapidly, as symptoms of
dehydration from hyperglycemia and ketoacidosis can lead to
coma and death. Those with Type 1 DM require daily insulin
injections. The body type for Type 1 DM is lean.
Type 2 DM was considered an adult disease, being diagnosed
in overweight and obese adults over age 40. These traditional
criteria are becoming blurred as more overweight young
adults and children are being diagnosed. Insulin resistance precedes
diagnosis of Type 2 DM. A confirmed diagnosis includes
a defect in both the action and secretion of insulin. Diagnosis
might be delayed for many years, until complications of DM are
recognized. Type 2 DM is often controlled with diet and in
some cases, oral medications.
Gestational DM may be a predictor of DM later in life,
as 50 percent of those with gestational DM remain at risk
of developing Type 2 DM later in life. Diagnosis of gestational
DM provides an opportunity to initiate prevention
strategies early.
Clinical Implications: Clinicians deal with the oral implications of DM now, and can also look for early signs of DM
with simple screening tools.
Kidambi, S., Patel, S.: Diabetes Mellitus Considerations for Dentistry. J AM Dent Assoc 139: Suppl 5, 8S-18S, 2008. |
Oral Health and Diabetes Mellitus
Periodontitis is a well-documented complication of
diabetes mellitus (DM) and periodontitis might increase
the risk of poor metabolic control. The subgingival
microflora associated with periodontitis does not differ
between those with and without DM, but those with
DM have an exaggerated inflammatory response. In
1993, Dr. Löe proposed that periodontitis be considered
the sixth complication of DM. The first five are:
retinopathy, nephropathy, neuropathy, macrovascular
disease and poor wound healing.
Those with DM have excess glucose in the blood
due to a deficiency of insulin secretion or an increased
cellular resistance to insulin actions. This leads to a variety
of abnormalities involving fats, carbohydrates and
proteins. One pathologic mechanism associated with
excess glucose leads to the formation of advanced glycation
end-products (AGEs). AGEs bind to receptor sites
(RAGEs) on endothelial cells of the blood vessel walls
and monocytes. These mechanisms are linked to the five
identified complications of DM. This might also explain
the link to periodontitis.
Periodontal inflammation dumps a variety of
cytokines into the blood stream from oral tissues that
travel to other areas and tissues of the body. These
cytokines trigger an overall systemic immune response
and antagonize insulin. In some cases, periodontitis is
the first sign of DM. Thirty percent of those with Type
2 DM have yet to be diagnosed. Dentists and dental
hygienists play an important role in the recognition of
the early signs and symptoms of DM, often evident as
periodontitis and poor healing following treatment.
Clinical Implications: Dentists and dental hygienists
providing prevention and periodontal therapy will
impact both the oral health and the general health of
those with DM.
Lamster, I., Lalla, E., Borgnakke, W., Taylor, G.: The Relationship Between Oral Health and
Diabetes Mellitus. J Am Dent Assoc 139: Suppl 5, 19S-24S, 2008. |
Inflammation – the Link Between Perio and Diabetes
Type 2 DM is a broad activation of the innate immune
response, causing chronic low-grade inflammation throughout
the body. Type 2 DM is commonly seen in overweight
and obese people who have elevated levels of circulating fatty
acids that inhibit glucose uptake, glycogen synthesis and glycolysis.
This triggers the innate immune response. Often,
insulin resistance is countered by an increase in insulin production.
However, in 30 percent of Type 2 DM cases, pancreatic
cells are reduced by programmed cell death called
apoptosis, leading to inadequate insulin production.
Cytokines are released by white blood cells in the periodontal
tissues in response to subgingival bacteria. These
cytokines eventually make their way into the blood stream
and to distant organs and tissues. Cytokines circulating in
the blood stream activate an acute phase response with a
cascade of immune responses.
The risk for periodontitis in those with DM is two- to
five-times higher compared to those without DM. Changes
in the blood vessels in those with DM influence the initiation
and progression of gingivitis and periodontitis. Both
DM and periodontal disease experience cytokine-induced
acute phase immune response reactions. Compromised
immune response leads to both progression of periodontal
disease and reduced metabolic control in DM.
Some, but not all clinical trials demonstrate improved
glycemic control following periodontal therapy. Study outcomes
are similar for both oral diabetes drugs and periodontal
treatment when measuring glycemic control.
Clinical Implications: Active periodontal therapy, as well
as maintenance care is important for both oral health and
overall health. Dentists and hygienists provide valuable
care for those with both periodontitis and DM.
Tunes, R., Foss-Freitas, M., Nogueira-Filho, G.: Impact of Periodontitis on the Diabetes-Related
Inflammatory Status. J Can Dent Assoc 76: 1-7, 2010. |
Awareness of Diabetes’ Impact on Other Diseases
The incidence of diabetes is on the rise worldwide.
Chronic systemic manifestations of diabetes are primarily seen
in the vascular system, with specific issues related to the
microvasculature including retinopathy, nephropathy and
neuropathy. Oral complications of diabetes include gingivitis,
periodontitis, xerostomia and consequently, caries. Diabetes is
bi-directional, with uncontrolled diabetes leading to periodontitis
and severe periodontitis impacting glycemic control.
A researcher at the University of Sharjah in the United
Arab Emirates, used a written questionnaire to evaluate the
attitudes and awareness of patients with diabetes. The 200
subjects were seeking care at the largest diabetic clinic in
Benghazi, Libya. The questions related to oral health and
oral care.
The majority of subjects, 71 percent, had Type 2
diabetes, with 18 percent reporting Type 1 and 11 percent
unsure which type they had. Subjects ranged in age
from 17 to 78 years and had diabetes from one week to
40 years.
Dry mouth was experienced by 84 percent of the group.
Smokers accounted for 42 percent of the group. The majority
had teeth, but 31 percent were edentulous with only 44
percent of them wearing full dentures. Only 17 percent
brushed twice daily and only 12 percent reported daily flossing.
The dentist was the primary source of information about
oral complications of diabetes and oral care. Those reporting
oral infections also had high glycemic control scores. Less
than 50 percent were aware that dental diseases are complications
of diabetes.
Clinical Implications: Education is needed from both dental and medical professionals addressing the oral complications
associated with diabetes and the importance of good oral hygiene and regular dental care.
Eldarrat, A.: Awareness and Attitude of Diabetic Patients about Their Increased Risk for Oral Diseases. Oral Health Prev Dent 9: 235-241, 2011. |
Diabetes Part of Multiple Risk Factor Syndrome
Periodontal disease is the sixth-most-common
complication of diabetes. The primary cause of
death for those with diabetes is cardiovascular disease
with risk being three-times higher in people
with Type 2 diabetes mellitus (DM).
A recent study showed a one percent
increase in hemoglobin A1c (HbA1c)
level associated with an 18 percent
increased risk of cardiovascular disease.
This case report follows the diagnosis
and treatment of a 62-year-old
Japanese woman presenting with severe
periodontitis and diabetes. She was
diagnosed 10 years earlier with DM,
was receiving daily insulin injections and had no
other complications of diabetes besides periodontitis.
She was also a smoker and took oral medications
for high blood pressure and high cholesterol.
Clinically, several teeth were missing, anterior
teeth were flared and severe bone loss was evident
around some teeth with severe mobility. Plaque and
calculus levels were high throughout the mouth.
Periodontal treatment was provided including surgery
and oral hygiene instructions. Following treatment
her HbA1c level, cholesterol levels and blood
pressure improved. The patient was then followed
and remained stable for four years while receiving
periodontal maintenance therapy. She then developed
myocardial infarction. During this time she
showed continuous deterioration of her HbA1c level
and also increased periodontitis. Following coronary
bypass surgery and re-establishment of periodontal
maintenance therapy, systemic markers improved.
The long-term clustering of these risk factors is associated
with development of heart problems.
Clinical Implications: Dental and medical clinicians
will provide coordinated treatments for
general health and periodontal health in the
management of patients with multiple risk factor
syndrome.
Shimoe, M, Yamamoto, T., Iwamoto, Y., Shiomi, N., Maeda, H., Nishimura, F., Takashib,
S.: Chronic Periodontitis with Multiple Risk Factor Syndrome: A Case Report. J Int Acad
Periodontol 13: 40-47, 2011. |