Most Common Questions

Crowns & Post Crowns

What is a crown?

Crowns are an ideal way to rebuild teeth which have been broken, or have been weakened by decay or a very large filling. The crown fits right over the remaining part of the tooth, making it strong and giving it the shape and contour of a natural tooth. Crowns are sometimes also known as ‘caps’.

Why would I need a crown?

There are a number of reasons.
For instance:

  • the tooth may have been weakened by having a very large filling
  • you may have discoloured fillings and would like to improve the appearance of the tooth
  • you may have had a root filling which will need a crown to protect it
  • you may have had an accident and damaged the tooth
  • it may help hold a bridge or denture firmly in place.

  • What are crowns made of?

    Crowns are made of a variety of materials and new materials are being introduced all the time. Here are some of the options available at present:

  • Porcelain bonded to precious metal: this is what most crowns are made from. A precious metal base is made and layers of porcelain are then applied over it.
  • Porcelain: these crowns are not as strong as bonded crowns but they can look very natural and are most often used for front teeth.
  • Porcelain and composite: porcelain and composite resin materials can sometimes look the most natural. However, these crowns are not as strong as bonded metal crowns.
  • Precious metal (gold and palladium): these crowns are very strong and hard-wearing, but are usually used at the back of the mouth, where they are not visible.

  • Post crowns may be used when the tooth has been root filled. The weakened crown of the tooth is drilled off at the level of the gum. The dentist makes a double-ended ‘post’ to fit into the root canal. This can be either prefabricated stainless steel or custom made of gold. One end of the post is cemented into the root canal, and the other end holds the crown firmly in place.

    If a root-filled tooth is not completely broken down, it may be possible to build it up again using filling material.  This ‘core’ is then prepared in the same way as a natural tooth and the impressions are taken.

    No. A local anaesthetic is used and the preparation should feel no different from a filling. If the tooth does not have a nerve, and a post crown is being prepared, then local anaesthetic may not be needed.

    The dentist will prepare the tooth to the ideal shape for the crown.  This will mean removing most of the outer surface, and leaving a strong inner ‘core’.  The amount of the tooth removed will be the same as the thickness of the crown to be fitted.  

    Once the tooth is shaped, the dentist will scan or take a digital impression of the prepared tooth, one of the opposite jaw and possibly another to mark the way you bite together.  The scans are way faster and better than old way to take impressions with sticky gooey clay like material in mouth.Then cap will be digitally designed and delivered by the dentist in the same visit

    The scanning and digital designing is done by our internationally trained head dentist Dr P.S Sethi in our in-house Cerec scanning and designing machine.Cerec Scanner and milling unit makes the crown faster which are accurate and fit better.

    No.  The crown will be made to match your other teeth exactly.  The shade of the neighbouring teeth will be recorded, to make sure that the colour looks natural and matches the surrounding teeth.  A temporary crown, usually made in plastic, will be fitted at the end of the first appointment to last until the permanent one is ready.  These temporary crowns may be more noticeable, but they are only in place for about two weeks till the final cap is fabricated.However at Dontia we specialize in delivering single visit crowns as we are the first one in Eastern India to fabricate in house digitally designed crowns with Cerec by Densply Sirona.

    Dontia is first dental clinic of Eastern India to deliver single visit dental crowns which are digitally designed with Cerec by Densply Sirona,Germany which is 33 years old technology now available in Kolkata.

    The life of a crown will depend on how well it is looked after.  The crown itself cannot decay, but decay can start where the edge of the crown joins the tooth.  It is very important to keep this area as clean as your other teeth, or decay could endanger the crown.  Properly cared for crowns will last for many years.Regular dental visits to detect any damage at early stage will help in the longivity of crown

    Once the fit and appearance of the crown has been checked – and approved by you – it will be cemented in place with special dental cement.  The cement also forms a seal to help hold it firmly in place.In some instances the crown may come out when they can be easily refitted by the dentist if the tooth is intact and dentist is visited within a day or two.

    Because the shape of the crown will be slightly different from the shape of you tooth before it was crowned, you may be aware of it to begin with.  Within a few days it should feel fine, and you will not notice it.  The crown may need some adjustment if it feels higher than the surrounding teeth.  If it is at all uncomfortable ask your dentist to check and adjust it.

    Scroll to Top