Completely edentulous patients, aged 18 years or older, presenting with severely atrophic mandibles (Class VI according to Cawood and Howell) were enrolled and treated using four implants, a CAD/CAM titanium bar and a low-profile attachment system to support an implant-supported overdenture.
A radiographic stent was modified and used as a surgical stent instead of computer-guided implant surgery to reduce the treatment time. Compared to the stent made with computer -guided surgery, since it is not accurate enough to use until final drilling, it can be used as an marker for initial position.
To compare virtual planning accuracy of novel computer-assisted, template-based implant placement techniques, which make use of CAD/CAM stereolithographic surgical templates with or without metallic sleeves. Furthermore, to compare open versus closed sleeves for templates without metallic sleeves.
The ideal treatment planning, accurate placement, and functional restoration of dental implants for the completely edentulous patient can be challenging. Anatomical limitations can make implant location difficult to determine.
One of the most difficult factors for an esthetic implant restoration is the natural profile of the cervical area in which the tooth emerges from inside …