A dental crown is basically a manufactured tooth. A crown is a cap or covering for a tooth. It is used when your tooth is discolored, cracked or broken, heavily filled, or if fillings have been lost. A dental crown is used to entirely cover or "cap" a damaged tooth. Besides strengthening a damaged tooth, a crown can be used to improve its appearance, shape or alignment. A crown can also be placed on top of an implant to provide a tooth-like shape and structure for function. Porcelain or ceramic crowns can be matched to the color of your natural teeth. Other materials include gold and metal alloys, acrylic and ceramic. These alloys are generally stronger than porcelain and may be recommended for back teeth. Porcelain bonded to a metal shell is often used because it is both strong and attractive. A dentist may recommend a crown to replace a large filling when there isn't enough tooth structure remaining, protect a weak tooth from fracturing, restore a fractured tooth, attach a bridge, covers a dental implant, cover discolored or poorly shaped tooth and cover tooth that has had root canal treatment. For preparing crown; upper and lower teeth shape will be recorded. This is done using a putty-like material in trays. Your dentist may refer to this as “taking impressions”. You will be numbed up with a local anesthetic. This is to ensure you do not experience any discomfort while the tooth is reshaped using a drill. The tooth will only be shaved back by a few millimeters, possibly less. Another impression is taken of the newly prepped tooth. A temporary crown is created in order to protect the tooth while the crown is being made. This temporary crown is also useful if any gum modification is required. It allows the gum to heal around the temporary crown before placing the final crown. When the crown is ready to cement in the mouth, the temporary crown is removed. The new crown is fitted and the appearance is checked with you. Then, it is glued directly to the tooth. Adjustments can be made if needed and floss is used to check the contact of the crowned tooth with the teeth next door.