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Figure 2. Illustration of the components of an implant—prosthesis screw (Ps), abutment screw (As), abutment (A), and fixture (F)—and two dental implants supporting a three-tooth prosthesis. Black portion (long arrow) represents the metal framework within the prosthesis. Note how the location of neurovascular bundle in the mandibular canal (short arrow) must be established to prevent injury during implant placement. (Reprinted, with permission, from reference 1.)