Guided Bone Regeneration for Vertical Alveolar Augmentation: Clinical Evaluation of d-PTFE-Ti Membranes and Comparison with Collagen Membranes: A Systematic Review
T titanium-reinforced d-PTFE membranes may offer mechanical advantages in space maintenance and dimensional stability, particularly in larger vertical defects; however, the available comparative evidence did not demonstrate a consistent statistically significant superiority over collagen-based approaches.
Abstract
Based on the growing use of guided bone regeneration (GBR) for implant rehabilitation in atrophic alveolar ridges, the choice of barrier membrane remains a critical factor for clinical success. This review aimed to evaluate the clinical effectiveness of titanium-reinforced dense polytetrafluoroethylene (d-PTFE-Ti) membranes compared with resorbable collagen membranes in vertical ridge augmentation. A literature review was conducted using PubMed, Cochrane Library, and ScienceDirect databases. Clinical studies published since 2014 involving human subjects undergoing GBR procedures with either d-PTFE-Ti or collagen membranes were included. Nine studies met the inclusion criteria, including randomized clinical trials and cohort studies. The selected studies indicated that both membrane-based approaches were effective in promoting bone regeneration and enabling implant placement. Titanium-reinforced d-PTFE membranes may offer mechanical advantages in space maintenance and dimensional stability, particularly in larger vertical defects; however, the available comparative evidence did not demonstrate a consistent statistically significant superiority over collagen-based approaches. Within the limitations of the available evidence, both strategies appear to provide clinically predictable outcomes, and membrane selection should be individualized according to defect morphology and treatment requirements.
Background Alveolar bone loss following tooth extraction remains one of the main challenges in implant dentistry. To counteract the physiological resorption that occurs post‐extraction, regenerative techniques such as alveolar ridge preservation (ARP) and guided bone regeneration (GBR) have been developed. These approaches use bone graft materials and barrier membranes to preserve or restore alveolar architecture, facilitating optimal implant placement. Objective This systematic review aims to critically evaluate the most relevant and methodologically robust clinical studies comparing the effectiveness of ARP and GBR techniques. Specific attention is given to membrane types, graft materials, surgical timing, and soft tissue management strategies, assessing their impact on biological, functional, and esthetic outcomes. Methods Fourteen high‐quality randomized controlled trials were selected and analyzed. Key outcome measures included vertical and horizontal bone gain, implant survival rates, soft tissue stability, postoperative complications, and patient‐reported satisfaction. Results Modern resorbable membranes demonstrate comparable bone regeneration outcomes to nonresorbable ones, while minimizing surgical invasiveness. Titanium mesh offers superior bone gain in complex defects but is associated with a higher complication rate. Early intervention may improve outcomes. The choice of graft material influences both osteogenic potential and structural stability. However, generalizability is limited by small sample sizes, short follow‐up periods, and exclusion of patients with systemic comorbidities. Conclusions Successful alveolar regeneration requires a personalized treatment approach, considering defect morphology and individual patient characteristics. Future research should prioritize larger, long‐term, multicenter studies that include real‐world patient populations to support the development of more predictive and patient‐centered clinical protocols.
A. Inchingolo, G. Marinelli, Pietro Lauria et al.· International Journal of Den...· 0 citations
While DO provides the greatest vertical bone gain, the GBR techniques might be a more clinically practical option, however, future well-planned RCTs to identify effective vertical bone augmentation techniques are still warranted.
Adjunctive use of LLLT with T-PRF effectively reduced early postoperative pain but did not provide significant additional benefits regarding implant stability or bone density compared with T-PRF alone.
Dr. Love Kumar Bhatia, Dr. Shwetank Dwivedi, Devendra Srivastava et al.· Genetics and Molecular Resea...· 0 citations
Objective
To evaluate the clinical and radiographic outcomes of membrane-free guided tissue regeneration (GTR) using enamel matrix derivative (EMD) with bone grafts in dogs with vertical infrabony periodontal defects.
Methods
This retrospective study reviewed cases of client-owned dogs that underwent membrane-free GTR using EMD in combination with bone grafts between August 1, 2023, and September 30, 2025. Outcomes were assessed from records and cone-beam computed tomography (CBCT) datasets using 2-D measurements of clinical attachment loss (CAL) and vertical bone defect ratio (VBDR) and 3-D volumetric analysis. Success was defined as CAL improvement (≥ 1 mm) and VBDR reduction (> 10%). Volumetric analysis was used to quantify infrabony defect fill.
Results
20 periodontal defects in 16 dogs were included (allograft, n = 10; xenograft, 10). Median follow-up was 7 months (range, 6 to 14 months). All defects met the success criteria. Median CAL decreased from 5.0 mm (range, 3.0 to 8.0 mm) to 2.0 mm (range, 1.0 to 3.0 mm), and median VBDR decreased from 0.42 (range, 0.16 to 0.78) to 0.18 (range, 0.04 to 0.46). Volumetric analysis revealed a median infrabony defect fill of 98.49% (range, 71.86% to 100.00%).
Conclusions
Membrane-free GTR with EMD was associated with clinically meaningful periodontal improvement and substantial infrabony defect fill in appropriately selected canine patients with vertical infrabony defects. Prospective, controlled studies are warranted to further evaluate its efficacy and indications.
Clinical Relevance
This membrane-free regenerative approach may provide a practical tooth-preserving treatment option for selected small-breed dogs when conventional barrier-membrane placement is technically challenging.
Daehyun Kwon, Y. Jang, Gyumin Kim· American Journal of Veterina...· 0 citations
Horizontal ridge deficiencies in the anterior maxilla frequently compromise ideal implant positioning and esthetic outcomes. This randomized controlled clinical trial evaluated the clinical performance of customized CAD/CAM zirconia membranes compared with conventional collagen membranes for guided bone regeneration (GBR) performed simultaneously with early implant placement. Twenty systemically healthy patients requiring single-tooth replacement in the anterior maxilla underwent early implant placement (4–8 weeks after tooth extraction) combined with simultaneous contour augmentation using a composite graft of autogenous bone and deproteinized bovine bone mineral (1:1). Participants were randomly assigned to receive either a customized CAD/CAM zirconia membrane (test group, n = 10) or a double-layer collagen membrane (control group, n = 10). The primary outcome was horizontal bone gain (HBG) at 6 months, assessed by standardized CBCT superimposition. Secondary outcomes included soft tissue healing evaluated using the Modified Wound Healing Index (MWHI), membrane exposure (wound dehiscence), and patient-reported postoperative pain assessed using a visual analogue scale (VAS). All implants survived during the 6-month follow-up period (100% survival rate). Mean HBG was 6.18 ± 0.60 mm in the test group and 5.85 ± 0.37 mm in the control group, with no statistically significant difference between groups (p = 0.158). Membrane exposure occurred in all patients receiving customized zirconia membranes (10/10, 100%), whereas no membrane exposure was observed in the collagen membrane group (0/10, 0%). Despite the higher exposure rate, graft stability and horizontal bone regeneration were not adversely affected. Soft tissue healing was significantly more favorable in the collagen membrane group. Postoperative pain decreased significantly over time in both groups, with no significant intergroup differences. Customized CAD/CAM zirconia membranes achieved horizontal bone augmentation comparable to conventional collagen membranes when used for simultaneous GBR during early implant placement. Although customized zirconia membranes were associated with a substantially higher membrane exposure rate, regenerative outcomes and implant survival remained unaffected, indicating that customized rigid barriers may represent a predictable alternative for horizontal ridge augmentation while offering potential advantages in surgical precision and procedural efficiency. Trial registration: ClinicalTrials.gov NCT06987149.
Mohammed Mashhout Anas, A. M. Gabr, Yasser El‐Makaky et al.· International Journal of Imp...· 0 citations
The Bone Ring Technique (BRT) is a newer viable option for restoring complex defects around dental implants with three-dimensional bone augmentation with significant height and width augmentation of buccal bone.
Priyadharshini Annamalai Senthur Pandian, Aniz Amanullah, Lakshmiganthan Mahalingam et al.· Journal of Clinical and Diag...· 0 citations