Piperine-Loaded In Situ Gel: Formulation, In Vitro Characterization, and Clinical Evaluation against Periodontitis oleh Poornima K. Gopalakrishna, Rajamma Abburu Jayaramu, Sateesha Shivally Boregowda, Shruthi Eshwar, Nikhil V. Suresh, Amr Selim Abu Lila, Afrasim Moin, Hadil Faris Alotaibi, Ahmad J. Obaidullah, El-Sayed Khafagy