Dr. Phua's Oral Wellness

19/10/2026

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19/10/2026

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17/10/2026

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17/10/2026

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Dehiscence vs. Fenestration:

Both are alveolar bone defects that expose the root surface by removing its bony covering. The key difference is whether the defect involves the alveolar crest.

🦷 1. Dehiscence

A defect in which the marginal bone is lost and the denuded area extends apically along the root surface.

Key feature: The alveolar crest is involved.

Clinical significance: Associated with an increased risk of gingival recession and root exposure.

🦷 2. Fenestration

A localized, window-like defect in the cortical alveolar bone that exposes part of the root surface while leaving the marginal bone crest intact.

Key feature: The alveolar crest remains intact, and the overlying gingiva is usually intact.

Clinical significance: Often undetected on routine clinical examination. CBCT, when clinically indicated, or surgical exploration may help identify the defect.

🔬 Easy way to remember:

• Dehiscence = Open at the crest.
• Fenestration = Window with the crest intact.

Clinical takeaway: If the alveolar crest is lost, think dehiscence. If the crest remains intact, think fenestration.

📚 Clinical relevance: Both defects are associated with anatomical factors such as thin cortical bone and prominent or malpositioned roots. Recognizing them is important in periodontal treatment planning and orthodontic risk assessment.

16/10/2026

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07/10/2026

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16/09/2026

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Younger people are now entering the list of stroke victims, dispelling the belief that the affliction only hits older people, the Southern Philippines Medical Center has warned.

16/09/2026

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Researchers from La Trobe University have demonstrated a promising new approach to fighting gum disease using a bacteriophage—a naturally occurring virus that infects bacteria but is harmless to humans.

In a laboratory study, the phage specifically targeted Fusobacterium polymorphum, a key bacterial species that helps disease-causing microbes stick together and form complex dental plaque communities.

When this "bridge" bacterium was attacked, the entire pathogenic biofilm became unstable. Total bacterial levels dropped by 94%, while several other major gum disease pathogens were reduced by more than 85%.

Rather than broadly killing bacteria like traditional antibiotics, phages can selectively target harmful microbes, potentially preserving more of the healthy oral microbiome.

These findings suggest that phage therapy could one day become a highly targeted treatment for periodontal disease.

📚Source: Journal of Oral Microbiology (2026)
DOI: 10.1080/20002297.2026.2726627