Effect of different fabrication materials and techniques on the retention of implant meso-structures to Ti-base abutments

Objectives: This study aimed to evaluate the effect of material and manufacturing technique on retention meso-structure Ti-base after artificial thermo-cycling aging. Materials Methods: Forty implant analogues were placed in resin moulds which Ti-bases screwed. scanned, abutments designed using CAD/CAM software. Samples divided into 5 equal groups according construction as follows: Group I (Zr CAD): zirconia, II (E.max Press): Pressable lithium disilicate with 3D printed pattern, III disilicate, IV (PEEK PEEK, V PEEK was directly pressed Ti-bases. each group surface treated cemented respective manufacturers’ instructions. All samples subjected 10,000 thermal cycles between 5°C-55°C. pull-out test. The surfaces internal photographed under high magnification analyze mode failure. Results: Press) showed highest values followed by CAD). press) least values. Insignificant difference found CAD) Conclusions: Lithium ceramics best results for both techniques. zirconia have comparable Pressing Ti-Base without macro-retentive features is not a reliable alternative. More clinical trials are needed confirm success different materials techniques used construct meso-structures Ti-base.