The search for fully synthetic alternatives to autogenous bone and collagen membranes continues to drive innovation in guided bone regeneration. This prospective interventional study, published in the International Journal of Implant Dentistry, evaluates a combination of carbonate apatite granules and poly(lactic acid/caprolactone) (PLCL) membranes — both entirely synthetic.

Sixteen patients with alveolar bone deficiencies were treated across 18 sites. The surgical protocol involved GBR using carbonate apatite granules mixed with saline, covered by PLCL membranes. Radiopaque markers placed at grafted sites enabled standardized CT evaluation. Pre- and post-operative computed tomography assessed changes in crestal bone width and cross-sectional bone area.

The results were encouraging: statistically significant increases in both crestal bone width and cross-sectional bone area (P < 0.01). The complication profile was manageable — minor wound dehiscence occurred in 33.3% of cases at 2 weeks and 22.2% at 1 month, but crucially, no infections developed at any time point. By 3 and 6 months, all sites demonstrated uneventful healing.

The dehiscence rate, while notable, compares favorably with non-resorbable membrane protocols and did not compromise outcomes. The combination showed favorable biocompatibility and mechanical stability — two properties that often conflict in synthetic biomaterials.

For the implantologist, this study presents a practical all-synthetic GBR option. Carbonate apatite offers bone-like crystallographic properties with controlled resorption, while PLCL provides a tunable degradation profile without the concerns of titanium mesh or ePTFE removal. The absence of animal-derived components simplifies regulatory and ethical considerations. The small cohort and lack of control group are limitations, but the prospective design and CT-based volumetric analysis provide useful preliminary evidence for this material combination.