Figures 10–14. Figure 10. Subperiosteal implant seated on 3-dimensional cast. Note design features. Figure 11. Intraoperative photograph of implant placement before suturing. Figure 12. Postoperative view. Notice satisfactory tissue healing. Figure 13. Preexisting denture showing the flanges removed and relined for immediate insertion after surgery. Figure 14. Modified immediate completely implant-supported overdenture inserted minutes after surgery