Brilliant Smiles Family Dental Care
Karl G. Lum Jr., D.D.S. &
Robert M. Lum, D.D.S., Inc.


San Jose, CA
(408) 377-0953

Crowns and Bridges


A crown is a type of dental restoration which completely caps or encircles a tooth or dental implant. Crowns are often needed when a large cavity threatens the ongoing health of a tooth. They are typically bonded to the tooth using a dental cement. Crowns can be made from many materials including ceramic, porcelain, gold or other semi-precious or non-precious metals.


In addition to strengthening a damaged tooth, bridges and crowns can be used to improve a tooth’s appearance, shape, alignment and dental occlusion (bite). Gaps left by missing teeth can cause the remaining teeth to shift, which can result in a bad bite. Bridges and crowns help prevent this from happening.


Reasons for crowns:

  • Decayed teeth.
  • Broken or fractured teeth.
  • Broken or fractured fillings.
  • Large fillings.
  • The tooth has a root canal.
  • Cosmetic improvement.


The Procedure:


The procedure for installing a dental crown normally takes two separate dentist visits.  At your first appointment,  while the tooth is numb, the dentist will prepare the tooth by removing any decay and then begin filing it down to prepare for the crown.  After the tooth is filed or filled to the proper shape, a mold or impression of the tooth is taken.  It is sent away to a dental lab, so that a custom permanent crown can be made accordingly. By the end of this first visit, your tooth will have a new temporary crown that protects it until the final crown is ready to be permanently placed.

When the permanent crown is ready, usually in two weeks, you will have your second visit.  At this appointment, the temporary crown is removed, after which the dentist will position and fasten the new crown to the tooth with a special adhesive.

Once your dental crown procedure is complete, it may take some getting used to before the permanent crown feels normal in your mouth; however, after a little time has passed, the crown should look, function, and feel like a regular tooth. If you have any questions about your crown after your procedure, be sure to talk to your dentist.

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