A crown is an artificial dental prosthesis that covers what remains of a broken, damaged tooth or a weakened cavity to prevent further damage. The crown is shaped like a natural tooth. For a more natural look, your dentist will also adjust the crown color to that of your adjacent teeth.
The crown can last for years depending on the health of the tooth below. When the tooth has lost a lot of its material, choosing a more durable material is always the best option. Temporary crowns are placed on the tooth while waiting for the permanent crowns that are developed in a dental laboratory and take time.
A dental crown must be placed, when a tooth is broken or weakened by decay, the ideal way to repair it is to place a crown. Crowning is recommended in several cases:
• After root canal treatment, the crown is necessary to protect what remains of the tooth;
• To improve the appearance of the tooth after discoloured filling;
• To hold a prosthesis or bridge in place;
The materials used for a dental crown are:
• Gold and metal alloys: it is one of the oldest filler materials. Gold is reinforced with metal alloys and becomes very resistant to wear and tear.
• Alumina: The crowns are manufactured according to the latest CAD/CAM dental techniques and look natural. Alumina can be used in all areas of the mouth.
• Porcelain and precious metals: Most crowns are made from a combination of porcelain and metal. The base of the crown is made of precious metal and layers of porcelain are placed on it.
• Porcelain: Of all the materials used, the porcelain crown is the most faithful to the appearance of the natural tooth. It is mainly used for front teeth. However, they are not as strong as porcelain-metal crowns.
• Pure ceramic: it is suitable for use in all areas of the mouth. Ceramic crowns have the appearance of a porcelain crown and the strength of a veneered crown. This modern technique is a metal-free alternative for people who are allergic to certain metals.
Duration of hospital stay
About 1 hour.
Average length of stay
2 to 4 days.
Allow time to manufacture the crown(s).
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Before installing a dental crown, the dentist must examine the tooth to be treated, using an X-ray or other method. This will allow him/her to determine if the tooth is decayed and needs root canal treatment to devitalize it. Generally, the treatment is performed in two appointments with the dentist.
The surgeon starts with a local anesthetic.
Once the tooth has been treated, i. e. the cavity has been cleaned and replaced by a material that fills the void caused by this cavity, the practitioner will grind the tooth to remove a certain thickness that will be necessary for the placement of this crown. If he/she removes 3mm of enamel and dentine, these three mm will be replaced by three mm of ceramic or metal according to what you have chosen in the estimate proposed to you.
Then, an impression has to be taken.
This is the most delicate moment and the guarantee of a successful future crown. Indeed, the choice of the impression material determines the fidelity of the impression on which the dental technician will work. It is easy to understand that if the impression of the tooth is not correct, the future crown will have difficulty inserting itself perfectly on the residual stump, either the crown will have play, which is detrimental for its future appearance, or it will have difficulty entering the stump and the practitioner will either send it back to the laboratory or will try to reduce the places that hinder its introduction, a practice that is strongly discouraged because it is more like DIY than dental art.
Another requirement that will condition the crown gum junction is that this junction must be as perfect as possible and to do this, the practitioner must incorporate a thread impregnated with a substance that will slightly retract the gum so that the impression will not be hindered by the gum, and the prosthetist can extend the crown slightly under the gum.When the crown is placed, it will be placed slightly half a millimetre below the gum so that it will be impossible for the naked eye to guess that this tooth is a prosthetic or artificial tooth.
The treatment lasts about an hour.
• Inappropriate root
• Inadequate bone support
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