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Metal Free Crowns- No Black Lines

{ News - Nothing but the tooth }

Jun 2014
6th
6th of June 2014
If you have a dental crown, this article is for you. In the old days of dentistry, there were only a few types of crown. Namely: 

1. Metal crowns 

2. Gold crowns 

3. Porcelain bonded to metal crowns
 

Metal and Gold Crowns

Now metal and gold crowns have their place, but they do not look like teeth! Porcelain bonded to metal crowns were devised to overcome this problem and still provide adequate strength. Over the years, these have proven to be a great success on the whole. However, they still contain metal and all too often a black line would appear around the gum line due to gum recession (ever heard of the term 'long in the tooth'?
 

Metal Free Crowns

At Progressive Dentistry, we aim to use metal free crowns wherever possible. There are a number of metal free crowns now available which have certain indications for the area required. For example,
 

Zirconia Crowns

Zirconia crowns are extremely strong and durable with compressive strengths of 900MPa. These are excellent at the back of the mouth.
 

Empress E max Crowns

Empress E max crowns are highly aesthetic and are our choice for front teeth. Have a look at some photos:
 

Zirconia crowns

Zirconia crowns- extremely strong and durable.

Left central tooth is an empress crown

The left central tooth is an Empress crown- highly aesthetic.

The choice is clear- metal free! If you have crowns and would like replaced due to the dreaded black line or would like more aesthetic crowns, please do not hesitate to contact us.

Treatment completed by Dr Nissit Patel. Laboratory work completed by Andy Foster.


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As you will be aware, dental implants are the best way to replace missing teeth. Whether you are missing one, several or all of your teeth, dental implants can help. In the past, dental implant crowns (the actual tooth replacement) was a combination of a titanium abutment (screwed into the implant) and a porcelain fused to metal crown. This was fine and provided a perfectly good, robust result. However, for front teeth especially, the aesthetics of such restorations were possibly not great. Today, we are able to provide crowns with all ceramic fittings. This is usually with a zirconium abutment and an E max crown. We can now also use a screw retained all ceramic crown, which was previously not possible. Therefore there is no metal above the gum line; greater aesthetics and no chance of a black line at the gum level. If you would like the most aesthetic dental implant restoration for your missing tooth/ teeth, contact us- we will have the solution.