General anaesthesia is not routine for every dental procedure; it is considered in selected clinical and patient-related situations.
Both approaches are used for fixed full-arch rehabilitation; the obvious difference is implant number, but treatment decisions are not based on number alone.
Zirconia and E-max have different material properties; the choice depends on tooth position, bite forces, remaining tooth structure and aesthetic goals.
Bone anatomy, gum health, oral hygiene, smoking, systemic conditions and careful planning are among the important factors in implant treatment.