Why Does Diabetes Affect Periodontal Health?

Introduction:

Diabetes is a progressive, chronic disease that not only dramatically increases the risk of vascular diseases in an individual but, when left uncontrolled, is a significant cause of mortality. Furthermore, as diabetes is a chronic systemic disease mainly featured by increased blood glucose levels and malfunctioning lipid metabolism, it weakens the individual for an immune breach (at an increased risk of infections) due to the absence or decreased insulin level. Hence, type 1 or type 2 diabetes impacts multiple organs, affecting their functions directly or indirectly.

Dental surgeons and patients suffering from dental issues should understand this disease's pathogenesis and its direct, indirect, or systemic manifestations. It is linked based on the theory that periodontal diseases are a subsequent extension of the gingival inflammation into the underlying supporting structures of the periodontium, including the alveolar bone or jawbone.

Periodontal diseases initiated by plaque later turn orally invasive with the byproducts of anaerobic or aerobic pathogens on the tooth and the adjoining structures. The progression of periodontal disease depends fundamentally upon the causative microorganisms, host response and extent of immunity breached, systemic disorders or hormonal abnormalities, and immunosuppressive nature, or, in fact, even the host's genetic predisposition.

How Are Periodontal Disease Pathogenesis and Diabetes Linked?

Periodontal disease is a chronic bacterial infection that affects the gingiva. It causes the loss of alveolar bone (a bony area that supports the teeth) through an anaerobic Gram-negative microorganism present in the bacterial plaque that adheres to the teeth. Anaerobic Gram-negative bacteria, inflammatory cells, or increased PMNs (polymorphonuclear leukocytes) can also be significant sources of alveolar bone loss or gingival recession due to periodontal pathologies.

Some microbial components, especially lipopolysaccharide, activate macrophages that synthesize and secrete proinflammatory molecules such as cytokines, IL-1 (interleukin-1), tumor necrosis factor-alpha (TNF-alpha), prostaglandins (significant amounts of PGE2), accessory enzymes, and AGEs. AGEs also increase in diabetic patients, causing atypical inflammation and inhibiting reactive oxygen species (ROS).

Sustained hyperglycemic levels also cause elevated NET levels (neutrophil extracellular traps), composed of decondensed chromatin and cytotoxic proteins. These increases in NETs aggravate tissue damage and delay wound healing. The NETs are incapable of ingesting microorganisms and instead contain them.

Various herpes viruses, such as the human cytomegalovirus (HCMV) and Epstein-Barr virus, have recently emerged as pathogens in destructive periodontal diseases. Many conditions can predispose to and facilitate the occurrence of periodontal diseases, such as smoking, genetic influences, estrogen deficiency, estrogen excess, dyslipidemia, and obesity.

What Causes Gum Disease in Diabetics?

The structure of the blood vessels in diabetic individuals changes by becoming thicker, thus inhibiting clearances out of body tissues for waste and nutrients. As a result, the gums and bones become weakened and less resistant to infections.

Uncontrolled diabetes raises salivary glucose, or blood sugar, which, in turn, contributes to the proliferation of gum disease-causing bacteria. Untreated periodontal diseases, on the other hand, can raise blood sugar levels, making it harder for diabetic patients to manage the disease.

On top of that, smokers suffering from the disease run a drastically increased risk of contracting gum disease compared with smokers who are not infected by the disease from smoking, which is, overall, not conducive to good oral health.

These diabetes-related variables, taken together with poor oral hygiene, significantly increase the likelihood of the development of periodontal disease.

What Are the Clinical Symptoms of Periodontal Disease in Type 1 and Type 2 Diabetes?

One or more of these clinical features are predominant in diabetic patients. However, with proper oral hygiene, regular visits to the dental surgeon every six months to one year for follow-ups and treating clinical pathologies observed orally will aid in symptomatic relief of oral health issues.

Mouth ulcers, canker sores, or gingival inflammation are seen in nearly most diabetics (who do not have frequent access to dental visits or are negligent of oral hygiene and scaling or prophylaxis).

• Gingival recession.

• Bleeding on probing by the dental surgeon and bleeding gingiva while brushing or flossing.

• Persistent bad breath or halitosis.

• Ill-fitting dentures due to alveolar bone resorption or bone pathologies and infections.

• Increased gaps between the contact surfaces of teeth and misaligned teeth.

• Tooth mobility ranges from mild to severe (grades 1, 2, and 3).

• Leaking of pus (periapical pathologies, root infections, or gingival abscesses and swellings).

How Does Diabetes Affect Periodontal Disease and Its Treatment Outcomes?

• The Impact of Diabetes on Periodontal Disease: Diabetes mellitus type 1 and diabetes mellitus type 2 are a risk factor for periodontitis. Control of blood sugars has a powerful impact on the risk for periodontitis: poorly controlled diabetes dramatically increases risk, nearly doubling or tripling it; while a well-controlled diabetes decreases it. Diabetes also increases the severity and progression of periodontitis. It can cause infections, ulcers, and dry mouth, among other oral health issues. The antidiabetic drugs Metformin and calcium channel blockers may cause medication side effects. The main reasons for the association in diabetic patients are increased oxidative stress, inflammation, and other immunological responses.

• Relation Between Diabetes and Periodontal Disease: Controlling diabetes can be hard when associated with periodontitis as it can increase HbA1c (glycated hemoglobin) levels and the risk for complications such as heart and renal problems. Studies have stated that untreated gum disease may worsen diabetes control while having severe gum disease can impact diabetes outcomes.

• Periodontal Treatment and Its Effect on Diabetes: There has been evidence of periodontitis treatment lowering HbA1c levels by about 0.4 percent, improving diabetic control, and decreasing morbidity. While some results from others are inconclusive, the evidence remains that periodontal treatment is a useful, low-risk intervention for diabetics.

What Are the Oral Hygiene Instructions Recommended for Diabetic Patients?

As per the American Dental Association (ADA), correct tooth brushing and flossing are sufficient oral hygiene aids to maintain and prevent recurring dental issues. However, accessory interdental cleaning aids like interproximal brushes, chemical plaque control by the regular usage of mouthwashes (Chlorhexidine 0.12 percent or Triclosan-containing mouthwashes), and oral prophylaxis at the in-clinic appointment with the dental surgeon every six months to one year are highly recommended as oral systemic complications can be prevented by the dental management in diabetes patients.

1. Toothbrushing: A primary requisite of correct tooth brushing is brushing twice daily with a nylon or soft-bristled brush with round bristles and fluoridated toothpaste. Hard back-and-forth and sawing motions between the teeth' contact surfaces should be avoided. Instead, small circular, short back and forth, and vertical motions for the front teeth (both the labial and the lingual surfaces) will be beneficial. The modified Stillman technique, the simple Fones technique, and the Bass method or sulcular technique are some of the recommended tooth brushing techniques by the ADA. The toothbrush must also be replaced every three to four months, as the bristles may be frayed.

2. Mouthwashes: Rinsing with mouthwash should preferably be done after flossing.

3. Flossing: The floss should be curved around each tooth and scraped several times in an up-and-down motion from the gingival portion to the crown portion of the tooth to dislodge food accumulation and for plaque control.

How Does the Dental Surgeon Manage a Diabetes Patient?

Diabetics, even without any dental issues, should be regularly recalled by the dentist to check for gingival, periodontal, and alveolar bone status by half-yearly scaling or oral prophylaxis.

Dietary diabetic measures, increased nutritional supplementation, and regular visits to the diabetologist and the dental surgeon are key to proper glycemic control (HbA1C levels) and oral health. Scaling and root planing, along with antibiotic therapy administration for targeting the periodontal pathogens most likely to be invasive in high-risk diabetics, is a suitable treatment modality every six to 12 months for these cases.

Dental treatment is the first step in documenting the patient's medical history. The dentist can give appropriate oral hygiene instructions for the patient's needs and antibiotic prophylaxis before undertaking any procedures.

Conclusion:

To conclude, substantial evidence exists of a bidirectional relationship between diabetes and periodontal disease. Therefore, timely dental checkups and diabetologists' recommended regimens and medications for controlling blood sugar levels are an interdisciplinary pathway to prevent aggravation and boost the immunity breached by diabetes and periodontal disease in an individual.