Use of Collagen Matrix Scaffolds as a Substitute for Soft Tissue Augmentation: Case Series

Area of Science:

• Periodontology
• Dental Regenerative Medicine

Background:

• Keratinized mucosa (KM) is crucial for dental health, particularly in restorative, prosthetic, and orthodontic contexts.
• Autogenous gingival grafts (AGGs) are standard for KM augmentation but have drawbacks like donor site morbidity and limited availability.

Observation:

• A case series evaluated the porcine bilayer collagen matrix (BCM), a xenogeneic material, for increasing attached KM.
• Patients with limited KM, shallow vestibules, or aberrant frenum attachments received BCM treatment.
• Follow-up extended to 4.5 years, assessing KM gain, gingival margin stability, and esthetics.

Findings:

• The BCM demonstrated effectiveness in increasing KM width around natural teeth.
• Successful outcomes included stable gingival margins, vestibular deepening, frenum elimination, and excellent esthetic integration (color, texture, contour).

Implications:

• BCM presents a promising alternative to AGGs, especially when donor sites are limited or esthetics are paramount.
• It offers a less invasive option, suitable for patients preferring to avoid a second surgical site or for clinicians seeking minimally invasive procedures.
• Further well-controlled, long-term studies are needed to confirm these findings.