Introduction: Loss of alveolar bone following tooth extraction is a common phenomenon which occurs especially within the first 6 months leading to the development of a variety of ridge deformities. The quantity and quality of bone support not only influences implant osseointegration, but also affects the shape and contour of the soft tissue and, hence, the esthetic outcome. Therefore, bone augmentation is an essential procedure.

Aim: The aim of the present case series is to evaluate the efficacy of xenograft (Bio Oss) in combination with collagen membrane (Creos Xenoprotect) in the treatment of horizontal ridge augmentation.

Material and Methods: In this case series five patients with Seibert’s class I ridge defect were selected and horizontal ridge augmentation was done using combination of xenograft and collagen membrane. Clinical and radiographic measurements were performed at baseline and 6 months postoperatively.

Results: Ridge width at baseline assessed by bone sounding, direct caliper and CBCT was 2.90±1.07 mm, 3.00±1.11 mm and 3.00 ± 1.16 mm and at 6 months by bone sounding and CBCT was 5.54 ± 1.11 mm and 5.62 ± 1.18 mm respectively.

Conclusion: In all 5 augmented sites, ridge width increased from baseline to 6 months. Thus, the use of xenograft along with collagen membrane provides a good alternative for lateral ridge augmentation.