Radiographic diagnosis of a well-defined, unilocular radiolucent, area between vital mandibular bicuspias is more likely to be.. The mental foramen Radiographic diagnosis of a well-defined, unilocular radiolucent, area between vital mandibular bicuspias is more likely to be: a. Residual cyst. b. The mental foramen*** c. A radicular cyst. d. Osteoporosis. e. None of the above. Share This: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook