Figures 1–5. Figure 1. Implant surface before acid-etched treatment. SEM ×1000. Figure 2. Implant surface obtained after organic acid mixture treatment. SEM ×1000. Figure 3. High magnification of the treated surface showing the microconcavities' appearance. SEM ×5000. Figure 4. Clinical image showing implants inserted in the hemimandible of nonhuman primates. Figure 5. Clinical image showing a test implant inserted in the rectus adbominus muscle of nonhuman primates.