Comparative mechanical behavior of grand Morse and external hexagon systems dental implants in posterior maxillary region. A Three-Dimensional Finite Element Analysis (3D-FEA) study. RSD [Internet]. 2024 Oct. 13 [cited 2025 Jun. 28];13(10):e53131047055. Available from: https://ojs34.rsdjournal.org/index.php/rsd/article/view/47055