Attre, T.; Malhotra, S.; Chowdhry, R.; Gupta, D.; Pandey, A.; Chopra, R. Comparative Evaluation of Dimensional Changes Achieved and Osteopontin Level in Peri-Implant Crevicular Fluid After Sinus Crestal Floor Elevation Using Piezosurgery and Concentrated Growth Factor With or Without Allograft: A Randomized Clinical Trial. Int J Clin Trials 2026.