These are dental restorations permanently fixed by the dentist in the mouth to provide a comfortable and long-lasting replacement for teeth, potentially lasting a lifetime. Since they are called "fixed," this automatically indicates that they cannot be removed after being placed, at least not personally under any circumstance. Instead, the assistance of a dentist is required if removal is necessary. These artificial teeth, fixed by the dentist, are made from materials that closely resemble natural teeth in appearance and are precisely matched to the size of the missing natural teeth. The dentist recommends fixed dental restorations to replace missing or worn-out teeth, achieving teeth that emulate the best possible appearance in shape and whiteness. Additionally, fixed restorations may be used to conceal the unsightly appearance of large fillings in teeth previously treated for decay or nerve removal. This process helps protect the treated teeth from breaking or falling out. They can also be used to cover the unpleasant appearance of one or more deformed teeth.