Periodontitis is one of the leading causes of tooth loss in adults and, despite this, it remains an underdiagnosed disease. One of the reasons is that it can progress for months or even years without causing pain, while the tissues supporting the teeth gradually deteriorate.

Traditionally, the diagnosis of periodontal disease is based on clinical examination and radiographic imaging, essential tools for assessing the condition of the gums and the underlying bone. However, there is another equally important factor that cannot be seen with the naked eye: the bacteria responsible for the infection.

Today, microbiological diagnosis makes it possible to identify the microorganisms involved in each case, providing information that helps the dentist personalize treatment and monitor the patient's progress more accurately.

Periodontitis Is Not Caused by a Single Bacterium

Although we often refer to "the bacterium that causes periodontitis," the reality is much more complex.

Periodontal disease is an infection caused by a group of bacteria that colonize the space between the tooth and the gum. Not all patients have the same microbiological profile, nor do they develop the disease with the same severity.

In addition to the presence of pathogenic bacteria, other factors influence the progression of the disease, including:

• Smoking.
• Diabetes.
• Stress.
• Hormonal changes.
• Genetic predisposition.
• Each patient's immune response.

For this reason, two people with apparently similar clinical findings may require different therapeutic strategies.

Why Is It Important to Identify the Bacteria?

Knowing that periodontitis is present is only one part of the diagnosis. The next step is understanding which microorganisms are keeping the infection active.

Microbiological analysis makes it possible to identify the main periodontal bacteria present in the gum sample and determine their quantity. This information provides the dentist with a much more comprehensive understanding of the infectious process.

Knowing the bacterial profile can help to:

• Confirm the microbiological origin of the disease.
• Assess the risk of disease progression.
• Choose the most appropriate treatment for each patient.
• Select the most suitable antibiotic, when indicated.
• Monitor the response to periodontal treatment.

In other words, it does not replace the clinical diagnosis but complements it with objective information about the source of the infection.

The Role of Molecular Diagnosis

One of the most significant advances in periodontology in recent years has been the incorporation of molecular biology techniques.

The Laboratorio Echevarne Periodontal Health Test uses PCR-hybridization technology, a methodology that enables the identification and quantification of the main bacteria involved in periodontal disease with a high degree of sensitivity.

Unlike traditional microbiological cultures, molecular techniques can detect bacteria that are difficult, or even impossible to culture, providing a much more comprehensive microbiological characterization.

The result is a report that provides additional information to support clinical decision-making and design more personalized treatments.

Which Patients Benefit the Most?

Although the test can be requested whenever the dentist considers it necessary to determine the patient's microbiological profile, it is particularly useful in situations such as:

• Chronic periodontitis.
• Cases that do not respond adequately to conventional treatment.
• Patients for whom antibiotic treatment is being considered.
• Follow-up after periodontal treatment to evaluate microbiological changes.
• Patients whose risk of disease progression needs to be assessed.

In addition, molecular techniques can detect the presence of bacteria even before severe clinical signs appear, allowing for earlier intervention in selected patients.

How Is the Test Performed?

One of the main advantages of the test is that it is a simple and virtually painless procedure.

During the dental appointment, the dentist collects a small sample of crevicular fluid, the fluid found in the space between the tooth and the gum, using sterile paper points. The procedure takes only a few minutes and does not require any invasive techniques.

The sample is then sent to the laboratory for analysis using PCR-hybridization techniques.

The report is available within seven working days and can be downloaded through the Patient Portal once the analysis has been completed.

Beyond Diagnosis: A Tool for Personalized Treatment

Modern dentistry is moving toward increasingly personalized treatments.

Simply knowing that an infection is present is no longer always enough. Knowing which bacteria are causing it allows clinicians to better tailor the therapeutic strategy and obtain objective information to evaluate treatment response.

For this reason, microbiological diagnosis has become a valuable complementary tool in the management of selected patients with periodontal disease.

Conclusion

Periodontitis is a complex disease involving multiple factors, but bacteria remain the underlying cause of the infectious process.

Identifying which microorganisms are present through molecular diagnostic techniques provides valuable information that complements the clinical examination and helps dentists make more accurate treatment decisions.

The Laboratorio Echevarne Periodontal Health Test represents another step toward personalized dentistry, based on understanding each patient's microbiological profile to optimize treatment and monitor disease progression more effectively.