At Classic Dental Care, we use durable, cosmetic crowns and bridges fabricated by reputable laboratories right here in the Phoenix Valley! Our crowns are made of Zirconia which is the strongest all-ceramic material available with no underlying metal. . We also use lithium di-silicate all-ceramic crowns which surpass the cosmetics of zirconia and are better tailored for front teeth. Lithium di-silicate crowns have more translucency, a quality that allows light to penetrate, giving them a more natural, life-like appearance.
When are crowns necessary?
Crowns are needed when the extent of decay and/or fracture is beyond the scope suitable for a filling. When decay in combination with existing filling material occupies more than 1/3 of the tooth’s volume, it is weakened and can’t withstand the forces of chewing (don’t forget they’re not just for smiling). Our jaw muscles are very strong and those forces are absorbed by the teeth as they crunch through the foods we eat. A tooth weakened by an over-sized filling can crack through the root while chewing. Once it’s cracked through the root, it isn’t repairable, causing the need to extract it and replace it with an implant or bridge (and a much higher $$ bill). In such situations, it is much more cost effective to restore a badly decayed tooth with a crown before it cracks or fractures.
The secret to its success is that a dental crown encircles and covers the whole tooth down to the gumline. The strength and durability of crowns, combined with non-soluble, bonded cement fortifies teeth making them resistant to cracking or decay.
Dental Crowns can..
1. Repair and restore the shape of a decayed and/or fractured tooth
2. Strengthen and restore cracked/painful teeth
3. Cosmetically rejuvenate discolored teeth with large metal fillings
4. Straighten rotated and/or crooked teeth back into alignment and function
What kinds of Dental Crowns are there?
All Ceramic Crowns
All-ceramic crowns come in two different materials:
Utilizing the best advancements in both strength and cosmetics, nothing surpasses the quality and longevity of zirconia crowns. This is the stronger of the two ceramic crowns and is best used for back chewing teeth due to its resistance to fracture.
Lithium disilicate ceramic
Due to their superior cosmetic appearance, translucency, and how well they match the look of natural teeth, these crowns are best suited for the front incisors, canines and bicuspids where appearance really matters. Although they’re not as strong as zirconia, they provide an excellent balance of strength and esthetics.
Porcelain-fused-to-metal (pfm) crowns
These have been the most commonly used crowns from the 1960’s until the early 2000’s. It consists of a underlying metal shell for strength which is over-laid with a weak feldspathic porcelain for cosmetics. it is a bi-layered crown. Although they’re more cosmetic than full metal crowns, they don’t blend in as well as all-ceremic crowns. The reason for this is because they lack translucency. This property is important as it give a “see-through” effect that mimics natural teeth better. Another limitation of PFM crowns is that the porcelain can break off of the underlying metal.
Full cast (metal) crowns
This group is comprised of “full gold” crowns and semi-precious “white gold” crowns. There is no porcelain covering so the whole tooth is either yellow-gold or metallic in color. Although they are very strong and serve well, they are very rarely used due to poor cosmetics. Another reason is the high cost of gold and other precious metals.