Cone-in-cone (ACone-in-cone) is a term used to describe a To keep implant-supported definitive fixed dental prostheses in place, a Morse taper connection between abutments and crowns has been proposed(FDPs). This "Conometric Concept '' prosthetic method was employed to keep both lithium disilicate(LS2) and zirconia restorations in place. A cone-in-cone connection between an abutment and the appropriate coping is used in the conometric concept to preserve an implant-supported restoration without the need of fasteners or cement. Prefabricated components are used to ensure a perfect fit between the abutment and the restoration

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