Some people are reluctant to get premium dental crowns made completely of ceramic because they are afraid they won’t last. But a new study should put those concerns to rest. This study showed that ceramic dental crowns made with an advanced material have a survival rate of about 97% over four years.
And because the material is as beautiful as it is strong, the crowns also had a 97% satisfaction rate for their appearance.
But the study also hinted that your choice of dentist can make all the difference when it comes to avoiding dental crown complications.
Lithium disilicate is one of the newer materials available for dental veneers, dental crowns, and dental bridges. In its current form, it was introduced in the mid 2000s. It’s a very good material for dental crowns, because it’s translucent like natural tooth enamel, but also very strong. The strength of lithium disilicate is about 10 times that of your natural tooth enamel, so, in theory, it should be able to stand up to most bite situations.
Another benefit of lithium disilicate is that it comes in ingots that we can use with CEREC to make same-day dental crowns. That’s part of what makes this study so exciting–it confirms that crowns you get in a day can still last you for years.
Durable Dental Crowns
Because of its newness, we don’t have very many good studies on how well lithium disilicate performs in the real world, but this new study gives us a lot of good information. It’s a long-term study focused on a large number of crowns. In this study, 45 patients were followed for up to five years and they had a total of 327 dental crowns. Some of the patients had as many as 28 crowns.
There were a total of 15 complications experienced by 14 dental crowns. Most of these were minor complications, such as crowns that came off and had to be rebonded or minor chips. But there were six dental crowns that failed: three that fractured, two that developed marginal cavities, and one tooth that needed a root canal after the crown was placed.
Based on these failures, researchers calculated a survival rate of 96.8% at four years. If we consider that only half of the failures were actually caused by the crowns, the survival rate for the crowns is much higher.
The other part of the study looked at the appearance of the dental crowns. Initially, all the crowns were judged to be acceptable in their appearance.
By the end of the study, 90% of the dental crowns were considered “excellent” in terms of their appearance. A further 7% were considered acceptable in appearance. Only 3% were considered to be unattractive in appearance.
And 99% of the crowns maintained their color over the course of the study, with only 1% experiencing some form of discoloration.
Your Dentist Makes a Difference
This study mostly looked at restorations, not dentists and techniques, but it still turned up some important evidence about how much of a difference your dentist can make. Of the 14 dental crowns that experienced complications, six were placed by the same dentist. Since this dentist only placed 26 of the dental crowns, their personal complication rate was over 23%, four times the estimated complication rate at 24 months.
When you’re considering dental crowns, it’s important to talk to dentists about their experience and their personal success rates for a particular restoration.
Reconstructive dentist Dr. James B. Polley has extensive experience and a very high success rate when placing dental crowns and ceramic fillings with the CEREC system. If you want to learn more about this type of advanced dental crown in Las Vegas, please call (702) 873-0324 today for an appointment with Dr. Polley.