A Clinical Case Utilizing a New Collagen-Based Bone Xenograft

Objectives: To show the advantage of using a collagen-based porcine bone graft in bone regeneration.
Methods: A 65-year-old patient came to our private dental clinic, complaining of pain in the right maxillary area and a fallen bridge. The radiographic examination revealed a radicular fracture in tooth 14, a deep tooth decay in tooth number 23, both were bridge abutments, and a large bone defect in the 21-22 area (Photo 1).
All abutment teeth were extracted, alveolar bone filling and onlay bone graft using GTO® Osteobiol® were performed (Photo 2). No membrane was placed to cover the biomaterial, and vertical mattress sutures were performed.
After 4-month healing period, four dental implants were placed, and a second onlay graft was performed to obtain the adequate bone volume.
Following another 4-month healing period, implant stability was measured using resonance frequency analysis technology (Osstell®). A screw-retained prosthesis was prepared, with a precise occlusal adaptation to optimize the biomechanical function and to preserve the bone tissue and implants.
Results: After 4 months, significant bone graft volume was maintained. After clinical follow-up for 9 months, a large bone volume was observed as well as an improvement in the gingival biotype (Photo 3), no complications were observed. The radiological and clinical evaluations showed a stable graft. The high implant stability and the successful prosthetics provide evidence for the effectiveness of the collagen-based biomaterial in enhancing bone regeneration in dental surgery.
Conclusions: GTO® Osteobiol®, a porcine collagen-based bone substitute, was successfully used for alveolar bone filling and onlay bone grafting. The resulting bone volume provided a high stability and successful osseointegration of the dental implants. The use of GTO® Osteobiol® may reduce the patient discomfort, surgical time, and morbidity.