الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 132 |  |  |
| | | from | 132 | | |
Abstract
T
SUMMARY
his study was carried out on a model constructed from aluminum with a length of 3.5 cm and a width of 2 cm and a height of 2 cm which was used as a control model. Four implants of 3.6 mm Diameter and 11 mm Length were positioned at 90, 80, 75, and 65 degrees in relation to the horizontal surface of the model.
Aided by three different splinting methods, A total of thirty polyether impressions were made to the model. The impressions were equally divided into three groups as follows:
group A: polyether impressions including transfer caps splinted with self-cured acrylic resin.
group B: polyether impressions including transfer caps splinted with addition silicone.
group C: polyether impressions including transfer caps left without splinting.The impression procedure for the three groups was done. The impression was then poured with the stone. The stone cast was separated from impression, inspected and trimmed. Image cytometric analysis was done for all the thirty casts.
The results were recorded, collected, tabulated and statistically analyzed.
As regards comparison between accuracy of the models used at different angulation degrees, the difference of implant angulation at 65 degree and 75 degree with different splints were statistically significant while difference in implant angulation at 80 and 90 degree with different splints were statistically non-significant.
In addition, regardless of implant inclination, resin splint was more accurate than splinting with addition silicone and the no splint group showing the smallest error followed by the other 2 groups as proved by its significantly lower total mean absolute percent error.
The perpendicular inclination could be considered the favorable implant position giving the best impression accuracy and nearest values to the control model regardless of the efficiency of the impression material used.