الفهرس 
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Abstract
The present review evaluated the planes of obstruction of the small hole and rupture of the extensions held by the intracranial crown. Endocrownenute spans, endocrownendocrown domains were constructed by supplanting 6 missing lower ones on molded ramses with suggested standard sizes normally used in previous examinations. The two planes were constructed with an occlusal decrease of 2 mm, the size of the connector was 4x4, the specimens were arranged in two equivalent loops, each loop was 10 specimens: • group A: extensions retained by the ’endocoron. • group B: internal with endocoronal seal. Solid zirconia crowns machined the CAD / CAM framework. The peripheral hole was estimated and examined with a computerized magnification tool using for all examples. The gap obstruction was estimated using a general testing machine for all examples. The information was reviewed by surrogate testing to distinguish significance between meetings. A one-way examination of the ANOVA difference test followed by NewmanKeuls in pairs was used to identify significance between locations. ; 0.05 is considered measurable in all tests. The effects of negligible variation showed better minor transformations of supported endocoronal scaffolds. No measurable critical contrast between the breaking opposition of the two rallies.