Cosmetic Dentistry & Implant Dentistry
Las Vegas, Nevada
Dr. Henry Kim
Affectionate Dental Care
Excellence in Cosmetic Dentistry
A crown is a restoration that covers, or "caps," a tooth to restore it
to its normal shape and size, strengthening and improving the appearance
of a tooth. Crowns are necessary when a tooth is generally broken down
and fillings won't solve the problem.
If a tooth is cracked, a crown
holds the tooth together to seal the cracks so the damage doesn't get
Crowns are also used to restore a tooth when there isn't enough
of the tooth remaining to provide support for a large filling, attach a
bridge, protect weak teeth from fracturing, restore fractured teeth or
cover badly shaped or discolored teeth.
Especially, Crown, or PFM( Porcelain
Fused To Metal Crown), is a MUST for a Root Canal treated
Tooth as the Tooth with Root Canal are very weak, dry and
Types of Crowns:
Crown Alumina,Procera∝ Crown Zirconia -
Natural teeth transmit and refract light. Unlike crowns
with metal substructures,
Procera ceramics let the light shine through whether you are using
Alumina or Zirconia. Both Alumina and Zirconia materials are strong and
result in long-lasting beauty that metal materials cannot match.
However・ For the best esthetics, Procera Alumina can be used in all
areas of the mouth. For the best strength, Procera Zirconia is often
used in the posterior area where biting forces are greater and for more
complex rehabilitations with bridges and implants.
Porcelain Fused to Metal (PFM)-This type
of crown has been used in dental practices for a long time. Even though
it is tooth colored, it has a very strong metal core inside. In fact, it
is a little stronger than the all-ceramic crown. It is possible to
reproduce this type of crown in the same color as natural teeth because
of the porcelain overlay.
Crown-Made of very hard porcelain, this is the newest and best
material to use for tooth colored crowns. It produces excellent
aesthetic results . Contemporary all-ceramic crowns are exceptionally
strong. Current technology even allows bridges to be made using the
latest all-ceramic material.
This material has been used for the longest period of time. Many
dentists use this type of crown for teeth in the back of the mouth. Gold
is a very strong material and it is less abrasive against our natural
How is a crown placed?
To prepare the tooth for a crown, it is reduced so the crown can fit
over it. An impression of the teeth and gums is made and sent to the lab
for the crown fabrication. A temporary crown is fitted over the tooth
until the permanent crown is made. On the next visit, the dentist
removes the temporary crown and cements the permanent crown onto the
Will it look natural?
Yes. The dentist's main goal is to create a crown that looks like a
natural tooth. That is why your dentist takes an impression. To achieve
a certain look, a number of factors are considered, such as the color,
bite, shape and length of your natural teeth. Any one of these factors
alone can affect your appearance.
If you have a certain cosmetic look in mind for your crown, discuss it
with your dentist at your initial visit. When the procedure is complete,
your teeth will not only be stronger, but they may be more attractive.
Why crowns and not veneers?
Crowns require more tooth structure removal, hence they cover more of
the tooth than veneers. Crowns are customarily indicated for teeth that
have sustained significant loss of structure or to replace missing
teeth. Crowns may be placed on natural teeth or dental implants.
What is the difference between a cap and a crown?
There is no difference between a cap and a crown.
How long do crowns last?
Crowns should last approximately five to eight years. However, with good
oral hygiene and supervision, most crowns will last for a much longer
period of time. Some damaging habits like grinding your teeth, chewing
ice or fingernail biting may cause this period of time to decrease
How should I take care of my crown?
To prevent damaging or fracturing the crown, avoid chewing hard foods,
ice or other hard objects. You also want to avoid teeth grinding.
Besides visiting your dentist and brushing twice a day, cleaning between
your teeth is vital with crowns. Floss or interdental cleaners
(specially shaped brushes and sticks) are important tools to remove
plaque from the crown area where the gum meets the tooth. Plaque in that
area can cause dental decay and gum disease.
© 2005 Henry Kim DDS