Posts for tag: porcelain crowns

Question: What are the pros and cons of metal free crowns?

Answer: Metal free crowns are a great alternative to the more traditional gold crowns and porcelain fused to metal crowns we have seen over the past 20 years. The reason is due to the esthetics as there is no metal in the crown and no darkening of the tooth can occur. Color matches tend to be better and also are typically more stable since they are made of 1 material versus multiple materials. Many patients with porcelain fused to metal crowns(aka PFM crowns) will see a gray line at the gumline over time as the gum recedes or pulls away from the tooth. This can lead to very unsightly esthetics over time. Even if the gum does recede, a metal free crown will not yield a gray line because their is no metal present. Although esthetics are exceptional, there are limitations on where they can be placed such as the bite. Patients that have a "tight" or "deep" bite may not have sufficient room for these type of crowns. If the crowns are placed anyways, they are more susceptible to fracture. Metal free crowns are more at risk for fracture if the patient is a severe grinder or clenches their teeth often. Talk to Dr. Glasmeier about metal free crowns!


Question: If I want to whiten my teeth, should I whiten before or after my dental work.


Answer: Almost always you would want to whiten prior to commencing with your dental treatment. Modern teeth whitening techniques are designed to remove external stains from natural tooth structure. It is well known that there a variety of successful brands and techniques available that can help whiten stained and darkened teeth. However, in spite of the technological advancements, whitening materials have no effect on existing restorations in the mouth.


Restorations such as crowns, bridges, fillings, etc. will not respond to whitening. Because of this, it is encouraged to whiten before any major restorations are placed or there could be some discrepancies in the tooth colors.

Question: What is a bridge?


Answer: A bridge is a permanent dental restoration that replaces one or more teeth. It is permanent in that it is permanently glued in and cannot be taken in and out of the mouth like a denture. It often follows after a hopeless tooth has been extracted(removed). To put in a bridge, I have to prepare and reshape the teeth on both sides of the missing tooth. The bridge consists of the replacement tooth and two crowns (caps) on each side. The crowns will fit over the prepared teeth to support the replacement tooth. This typically requires two appointments and you will be placed in temporaries at the end of the first appointment until the lab fabricates your bridge. While this is one way to replace missing teeth, there are other ways to replace missing teeth such as removable partial dentures and implants.

August 25, 2009
Category: Uncategorized



Hello.I have cerebral palsy.I have a few metal crowns.over time my bite has become off and I ground at night.I didn't take care off this right away like I should have and now my teeth are severely worn.Do you think if I got posts and metal crowns they would last in my mouth?the few crowns I have seem to have done well over time.would the new zirconia crowns be as durable as the metal? Thank you for your time and consideration. Kurt



Hi Kurt,


This unfortunately is a very loaded question that I cannot give you a good answer for the following reasons:

1. Posts do not make teeth stronger...they more less help hold in the foundations that the crowns sit on so they are more for retention, not strength.

2. There are crowns with different properties for different situations, so it is hard to say what is best for you as there many things that need to be evaluated such as:
1. Cavities present?
2. What kind of bite do you have?
3. Condition of existing crowns?
4. How heavy you grind?

These are several questions that would need to be answered before telling you what kind of crowns you need. Having said that, zirconia crowns are showing promise in strength and certainly have esthetic advantages over metal crowns but they are not indicated in all situations. I would recommend getting evaluated to further determine this.


Good luck!