Figures 7–10. Figure 7. The gingival thicknesses are noted as points under the traced gingival arch and the dots connected to demonstrate an approximation of the underlying bone contour. Figure 8. A 5-mm width is measured on the drawing and a sizing transparency available from implant companies is placed over the drawing to approximate implant size and fit in the available volume. Figure 9. Postoperative loss of thin bone to a gap of 1.4 mm can expose the implant threads. Figure 10. An overview of the flapless ridge expansion technique using osteotomes