Periodontal Regeneration in Intrabony Defects

Periodontal intrabony defects arise when chronic inflammation drives resorption of the supporting alveolar bone around teeth, creating vertical voids that compromise tooth stability. Successful regeneration of these defects requires restoration of the cementum–periodontal ligament–alveolar bone complex, which is achieved through a combination of surgical access, barrier membranes, bone grafts and bioactive agents. Guided tissue regeneration (GTR) employs occlusive membranes to prevent epithelial downgrowth and permit selective repopulation by periodontal ligament cells. Enamel matrix derivatives (EMD) and recombinant growth factors further stimulate cementogenesis and osteogenesis. Recent advances include minimally invasive flap designs that preserve blood supply, biomimetic scaffolds that combine mechanical support with osteoinductive cues, and autologous platelet concentrates to boost early wound stability. Clinical outcomes are assessed by probing pocket depth reduction, clinical attachment level gain and radiographic defect fill. Although complete defect closure remains elusive for complex morphologies, combination therapies and tailored approaches now yield predictable improvements, reducing tooth loss and improving long-term prognosis on a global scale.

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Periodontal Regeneration in Intrabony Defects publication trend

The graph below shows the total number of articles in periodontal regeneration in intrabony defects across all publications each year (not limited to Nature Index journals).

Technical terms

Intrabony defect: A vertical osseous lesion within the alveolar bone caused by periodontal disease.

Guided tissue regeneration (GTR): A surgical method using barrier membranes to direct selective cell repopulation for periodontal repair.

Enamel matrix derivative (EMD): A protein fraction derived from porcine tooth enamel that stimulates cementum and bone formation.

Probing pocket depth (PPD): The clinical measurement of the depth of the gingival sulcus or periodontal pocket from the gingival margin to the base of the pocket.

Clinical attachment level (CAL): The distance from a fixed reference point (e.g. cementoenamel junction) to the base of the periodontal pocket, indicating tissue attachment.

Barrier membrane: A resorbable or non-resorbable material placed over a defect to exclude epithelium and allow periodontal ligament cells to repopulate the area.

References

1. From Basic Science to Clinical Practice: A Review of Current Periodontal/Mucogingival Regenerative Biomaterials. Advanced Science (2024).
2. Minimally invasive non‐surgical periodontal therapy of intrabony defects: A prospective multi‐centre cohort study. Journal Of Clinical Periodontology (2024).
3. New Perspectives in the Use of Biomaterials for Periodontal Regeneration. Materials (2019).
4. The role of surgical flap design (minimally invasive flap vs. extended flap with papilla preservation) on the healing of intrabony defects treated with an enamel matrix derivative: a 12-month two-center randomized controlled clinical trial. Clinical Oral Investigations (2021).