Periodontology

Definition

Periodontology (from Greek peri "around" and odous "tooth") is the specialty of dentistry that studies the supporting structures of teeth, as well as diseases and conditions that affect them. The supporting tissues are collectively known as the periodontium.

A Periodontist is a specialist who focuses on the prevention, diagnosis, and treatment of periodontal disease, and in the placement of dental implants.

The Periodontium

The periodontium is composed of four main tissues:

Gingiva (Gums): The visible soft tissue covering the alveolar bone.
Periodontal Ligament (PDL): The connective tissue fibers that anchor the tooth to the bone and act as a shock absorber.
Cementum: The calcified layer covering the tooth root.
Alveolar Bone: The part of the jawbone that contains the tooth sockets.

Periodontal Diseases

Periodontal disease is typically an inflammatory response to the bacterial biofilm (plaque) on the teeth. It is broadly classified into two stages:

1. Gingivitis

The mildest form of periodontal disease.

Symptoms: Red, swollen, and bleeding gums.
Reversibility: Completely reversible with professional cleaning and good oral hygiene.
Bone loss: No loss of supporting bone occurs in this stage.

2. Periodontitis

If gingivitis is left untreated, it can progress to periodontitis, where the inflammation spreads below the gum line.

Periodontal Pocket: The attachment between the tooth and gum breaks down, creating a space where bacteria thrive.
Bone Destruction: The body's immune response causes the breakdown of the alveolar bone.
Classification: Staged by severity (Stage I–IV) and graded by rate of progression (Grade A–C) according to the AAP/EFP 2017 Classification.

Clinical Procedures

Periodontists utilize both non-surgical and surgical interventions:

Non-Surgical Therapy

Scaling and Root Planing (SRP): A deep cleaning that removes plaque and calculus from below the gum line and smoothes the root surfaces.
Local Delivery Antimicrobials: Placing antibiotics directly into periodontal pockets.

Surgical Therapy

Flap Surgery (Pocket Reduction): Lifting the gums to remove deep tartar and suturing them back in a way that makes the area easier to clean.
Soft Tissue Grafting: Using tissue (from the palate or a donor) to cover exposed roots caused by gingival recession.
Guided Tissue Regeneration (GTR): Using membranes and bone grafts to "regrow" lost bone and ligament.

The Perio-Systemic Link

Modern periodontology emphasizes the "Oral-Systemic Connection." Chronic periodontal inflammation is linked to several systemic conditions:

Diabetes Mellitus: A bidirectional relationship where uncontrolled diabetes worsens gum disease, and gum disease makes blood sugar harder to control.
Cardiovascular Disease: Increased risk of heart disease and stroke.
Adverse Pregnancy Outcomes: Potential links to low birth weight and preterm birth.

Professional Education

To become a Board-Certified Periodontist:

Earn a DDS or DMD degree.
Complete a 36-month CODA-accredited residency.
Achieve Diplomate status through the American Board of Periodontology (ABP).