Abstract: Vertical bone augmentation is one of the greatest challenges of bone regeneration in implant dentistry. When the bone defect is large, it is often necessary to open a second operative area for autologous bone block grafting or to use titanium mesh or non-absorbable membrane in combination with autologous bone blocks or particulates. The incidence of complications is high and the surgical trauma is significant. In this case, the patient had a severe vertical bone defect in the posterior maxillary region. Bio-Oss Collagen combined with titanium tent poles and absorbable collagen membrane were used for vertical bone augmentation. The average bone height increased by 6.57 mm at 6 months after bone grafting, which met the need of implant implantation. The bone tissue around the implant was relatively stable during the follow-up after restoration. Due to the predictable effect of bone augmentation, the simpler operation procedure and the less invasive results, this operation can provide a reference for the clinical selection of vertical bone augmentation.

Key words: Dental implants, Guided bone regeneration, Vertical bone augmentation