What are dental crowns (tooth cap)?
For start, dental crowns are prosthetic substitutes that we attach to the natural teeth or dental implant. In order to install dental crown we need to grind natural tooth into reduced shape. Due to thickness of dental crown material, natural teeth also must not increase total tooth size. On the other hand, if we are installing crown to the endodontic treated tooth (tooth without root) we need to install add-on to the root to strengthen remain tooth structure. We do this because of proper transfer of the chew power.
In contrast, installing dental crown on the implant requires suprastructure – abutment. In other words, build-up that is screwed in implant and allows fixation of dental crown.
To conclude, purpose of dental crown is to restore teeth function and to improve its aesthetics.