Radiographic alveolar bone morphology and progressive periodontitis

Area of Science:

• Periodontology
• Oral Radiology
• Dental Research

Background:

• Understanding the relationship between radiographic bone morphology and periodontitis progression is crucial for effective treatment.
• Chronic periodontitis requires ongoing maintenance care to prevent disease advancement.

Purpose of the Study:

• To evaluate the association between radiographic alveolar bone morphology and the progression of periodontitis.
• To identify radiographic predictors of progressive periodontitis in patients undergoing maintenance care.

Main Methods:

• Radiographic assessment of marginal bone morphology (angular vs. horizontal) and lamina dura in 1,356 posterior interproximal sites from 56 adults.
• Clinical evaluation for progressive periodontitis semi-annually over a 30-month post-treatment period.
• Logistic regression analysis to identify baseline predictors of disease progression.

Main Results:

• Progressive periodontitis occurred in 2.4% of sites, with angular bony defects showing a significantly higher incidence (14.7%) than horizontal topography (1.8%).
• Angular bony defects (OR=10.6) and probing depths ≥5 mm (OR=4.2) were significant independent predictors of progressive periodontitis.
• Sites with intact radiographic lamina dura, regardless of bone morphology or probing depth, remained stable for at least 24 months.

Conclusions:

• Post-treatment angular bone morphology and deep periodontal pockets (≥5 mm) are significant risk factors for progressive periodontitis.
• The presence of radiographic crestal lamina dura at baseline is a strong indicator of long-term clinical stability (≥24 months) in periodontitis patients.