In situ reversed bone shell technique in alveolar ridge augmentation: A case report with two-year follow-up
TL;DR
In this single case, the ISRBS technique showed technical feasibility for staged horizontal ridge augmentation in a severe localized mandibular ridge defect and further clinical studies are required to evaluate its reproducibility and comparative effectiveness.
Abstract
Resorption of the alveolar bone often hinders dental implant placement in the ideal position and the long-term stability of dental implants. This study aimed to introduce a modified in situ reversed bone shell (ISRBS) technique of alveolar ridge augmentation. A 37-year-old female patient presented for treatment of a missing mandibular tooth and severe horizontal bone defect. An autogenous bone shell was harvested in situ, reoriented, and fixed in situ with a titanium screw, leaving a space for a mixture of autogenous bone chips and xenogeneic particulate bone graft material. A concentrated growth factor membrane and a bioresorbable barrier membrane were used for bone augmentation. At 6 months post-surgery, sufficient osseous regeneration had occurred, and the implant was placed in an ideal position. At the 2-year follow-up after crown delivery, the implant remained clinically functional, the peri-implant soft tissue appeared healthy, and CBCT showed maintenance of the augmented ridge contour. In this single case, the ISRBS technique showed technical feasibility for staged horizontal ridge augmentation in a severe localized mandibular ridge defect. Further clinical studies are required to evaluate its reproducibility and comparative effectiveness.