Gaber, D. S.; Kheir El Din, N. H.; Nassar, H. A.; Ashmawy, M. S. E.-D.; Ezzatt, O. M. Clinical and Biochemical Assessment of Lycopene Gel Combined With Nanohydroxyapatite Graft in Treatment of Grade II Furcation Defects: A Randomized Controlled Clinical Study. Perio J 2021, 5, 28-37.