Slow-Resorbing Small Intestinal Submucosa Membrane for Horizontal Ridge Augmentation: A Case Series.

Area of Science:

• Periodontology and Implantology
• Biomaterials Science
• Regenerative Medicine

Background:

• Severely atrophic alveolar ridges present a challenge for dental implant placement.
• Horizontal bone augmentation is crucial for achieving adequate bone volume.
• Small intestinal submucosa (SIS) membranes offer potential as barrier membranes in guided bone regeneration (GBR).

Purpose of the Study:

• To evaluate the efficacy of a slow-resorbing SIS membrane combined with freeze-dried bone allograft (FDBA) for horizontal bone augmentation.
• To assess bone gain, resorption, and membrane integrity in patients with severely atrophic ridges.

Main Methods:

• Six patients with severely atrophic ridges underwent horizontal bone augmentation using FDBA and a slow-resorbing SIS membrane.
• Cone-beam computed tomography (CBCT) was used for measurements at baseline, immediately post-op, and 4-6 months post-op.
• Histomorphometric analysis of bone core biopsies was performed.

Main Results:

• Significant horizontal bone gain of 4.74 mm was achieved.
• Minimal short-term resorption (0.37 mm) and high bone retention (95.08%) were observed.
• Histomorphometry revealed 44.6% new bone and 38.1% residual graft; SIS membranes maintained structural integrity.

Conclusions:

• The SIS-GBR technique shows promise for substantial horizontal bone augmentation in atrophic ridges.
• This combination demonstrates favorable biocompatibility and minimal short-term resorption.
• Further studies are warranted to confirm these preliminary findings.