الفهرس 
Title : Accuracy of implant placement with tooth versus tooth tissue supported digital light processing guides (Non randomized invitro study)
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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