## 5 Conclusions  
The PEEK demonstrated better stress-shielding properties compared to the high noble alloy, potentially reducing the risk of residual root fractures. These findings suggest that PEEK could be a more favorable alternative for post and core restorations, particularly in enhancing the longevity and durability of endodontically treated teeth. Conceptualization, T.S.A. and T.Y.M. ; methodology, T.S.A., G.A.M., D.F.A.K. and M.A. ; software, M.A. ; validation, T.S.A. and T.Y.M. ; formal analysis, T.Y.M. ; resources, M.A. ; writing--original draft preparation, G.A.M., D.F.A.K. and M.A. ; writing--review and editing, T.S.A. and T.Y.M. ; visualization, T.S.A. and T.Y.M. ; supervision, T.Y.M. ; project administration, T.S.A. All authors have read and agreed to the published version of the manuscript. This research received no external funding. [PERSON] [PERSON]; [PERSON]; [PERSON] [PERSON] The effect of ferrule height on stress distribution within a tooth restored with fibre posts and ceramic crown: A finite element analysis. _Dent. Mater._**2014**, _30_, 1304-1315. [CrossRef] [PubMed]
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