**5. Conclusion**

In conclusion, while some vinyl monomers had cytotoxic effects on tissues, their polymers, Ceraform and Unilab Surgibone were found to be biocompatible in soft and hard tissues and they seem only to be beneficial bone filler materials in treatment of the bone defects. Unilab Surgibone and xenograft could be used as bone filler materials in the treatment of traumatic and post-traumatic skeletal complications (e.g delayed unions, non-unions), defects due to bone removal (e.g. bone tumors, congenital diseases) or low bone quality (e.g. osteoporosis, osteopenia) and in other medical fields.
