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Retention of bone graft (Fig.1 *) is maintained by spreading setting acrylic into the edentulous undercut areas (Fig.2 *). The so called "acrylic dressing" remains in place 3 weeks postop. When it is removed with high-speed handpiece, the wound heals (Fig.3). Note the limited vertical height.
Xin Wei, DDS, PhD, MS 1st edition 11/20/2018, last revision 02/22/2020