July 15, 2021
Geometry of the bone present can make implant placement challenging. This can be especially true in the anterior, where the angle of the ridge requires a different trajectory than that of the prosthetic axis that will be used during restoration.1 Both the maxillary and mandibular ridge tip to the facial aspect, requiring implant placement that is not vertical in position. This can become more complicated in a site that is either edentulous or undergoing significant periodontal changes to the bone present, as the facial aspect is lost first, shifting the trajectory of the available bone present.
June 21, 2021
The presence of sufficient bone volume is one of the most important criteria for successful osseointegration of implants,1 wherefore restoration of atrophied edentulous maxillae poses a great dilemma for the surgeon and restorative dentist. Sinus bone grafting to build new bone for implant anchorage in atrophied jaws entails multiple surgical interventions and has varying implant success rates, high potential for donor site morbidity and increased surgical costs.2, 3 A major breakthrough came when Brånemark first used custom-designed, longer implants inserted into the zygomatic bone in support of a craniofacial prosthesis in the 1980s.4 When used in the treatment of maxillary atrophy,5, 6 zygomatic implants present a graftless alternative.