Odontogenic jaw cysts are common lesions in the oral and maxillofacial region. Enucleation and Bone grafting is the treatment of choice for large jaw cysts. After enucleation of jaw cyst, the bone defect is generally left for the spontaneous bone healing which will take time for complete bone healing. Replacement of jaw bone defect is one of the challenges faced by oral and maxillofacial surgeons since long time. For treating such defects bone grafting is an ideal treatment option. Bone grafting after removal of different pathologic defects was evaluated by many authors, but same study was not reported for exclusively for radicular cysts. In the present study, Demineralized Freeze Dried Bone Allograft (DFDBA) was placed after enucleation of the radicular cyst and healing was evaluated on the gray scale histogram study up to 6-month post-operative period. This method first time used for exclusively for the Radicular cysts