Evaluation of Horizontal Ridge Augmentation Using 1% Metformin Gel and PRF in Split Crest Technique: A Randomized Controlled Clinical Trial - Mahmoud T El-Destawy; AbdelAziz AKA AboAmo; Mahetab M Abdel-Wahab; Mostafa M Hosny; Ahmed M Bilal; Samy Saeed; Abd el-latif G Borhamy; Ahmed M Elshamy; Ahmed Halim; Aya Ali Hussien (The Journal of Contemporary Dental Practice, 2025)