Lateral Approach Sinus (LAS) and Crestal Approach Sinus (CAS): The Unravelled Paraphernalia for Maxillary Sinus Membrane Advancement. GJMR. 2023;23(J1):35-47. Accessed January 30, 2026. https://medicalresearchjournal.org/index.php/GJMR/article/view/102300