A dental implant is provided. In some embodiments, the dental implant facilitates viewing an outside of a distal end thereof via a proximal opening thereof, and/or facilitates providing bone graft material via selectively closable one or more distal openings. A dental implant installation procedure is also provided in which a distal end of a dental implant is projected into a paranasal sinus cavity or a nasal cavity to thereby displace the respective sinus membrane or nasal cavity membrane from the respective cavity floor, while minimizing risk of damaging the respective membrane. Bone graft material is introduced into the space thereby created between the respective membrane and the respective cavity floor via a distal portion of the dental implant to thereby form a desired sinus augmentation.
