الفهرس | Only 14 pages are availabe for public view |
Abstract This was a non- randomized in-vitro study, in Which a 3D- digital model of a partially edentulous maxillary cast was designed to receive dental implants in anterior and posterior regions using computer assisted surgical guides manufactured by Digital Light Processing (DLP) technique. After which, the accuracy of implant placement was assessed in both tooth and tooth tissue supported sites. Three designs of surgical guides were designed representing different type and position of support (Anterior tooth-supported, Posterior tooth-supported and posterior tooth-tissue supported) respectively when using the same number of tooth support. After implant placement, Accuracy measurements were done using (blue sky bio software) by superimposing the actually placed implants with the virtually placed implants, after implant placement The deviations between placed and planned implants were measured according to the global deviation؛ which was divided into vertical (depth deviation) and lateral deviations according to the shift in the outer border of the abutment. Moreover, the lateral deviation was further divided into mesio-distal and bucco-lingual deviations Results of present study showed that the most accurate group was posterior tooth supported group as 3 units of support was found to offer similar accuracy as those of full-arch guides .on the other hand anterior tooth-supported group was not considered the best support for surgical guides compared to |