Maxillary Hydroxyapatite Augmentation
HA is readily eliminates the need for donor-site’ ~lIrgery, and is castly placed in an outpatient setting. H:\ can be used to contour and eliminate minor ridge migration and undercut areas in the maxilla.I\:\ is pla ced into the maxilla in ” tet lmique similar tothat described for mandibular augrncntati, In. In the maxilla”single midline incision is unvually sufficient Ior adequa teaccess to both sides of the m.ixillarv ridge j Fig. 13-36).When access through a single incision is inadequate
eral vertical maxillary incisions in the canine and premolar areas can be used to improve visibility and access. Subperiosteal tunnels are created over the crest of the alveolar ridge, and preloaded syringes are inserted into the most posterior aspect of these tunnels. The HA particles are in jected and molded to the desired height and contour, and the incisions are dosed with a horizontal mattress suture. The amount of augmentation possible in the maxilla is sometimes limited by the ability to develop sufficient space for HA particles in the subperiosteal tunnels, Loss of
containment or displacement of the HA particles can result in inadequate ridge form.