I had a

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I had a root canal and subsequent crown installed ($2200) on rear molar, second to last, lower….after three days i noticed two black ‘holes’ and a off white area about 1/2 centimeter……went back and dentist said that because of upper molar extending down too far (for which he filed) it had worn crown down to the subhousing (metal i suppose) is this normal to have such a thin venear of porcelain between the finish crown and its actual structured base? how does it wear thru after just a few days? i was hoping to get at least 5 years out of it. he guarantees for a year and said this was purely cosmetic . very small and not a threat to my health. i just feel at 2000 the tooth should look like george clooney’s!

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Asked on 22/03/2012 12:00 am
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If you shop around you can get a guarantee of up to 5 years . Depends where and how they are made .

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Posted by Dental Professional (Questions: 0, Answers: 1475)
Answered on 11/05/2012 12:00 am
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Your dentist is right that this crown is structurally sound but if you do not like the appearance then you should go back and discuss it with him
It would be impossible for it to wear in a few days meaning that it was either made with thin porcelain or adjusted to allow space for the opposing tooth.
It all depends on the "small print" of your contract with him as to whether he promised there would be no metal show through on the crown but most dentists I know would prefer to replace a crown that a patient disliked as rather that have adverse publicity

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Posted by Dental Professional (Questions: 0, Answers: 1475)
Answered on 27/03/2012 12:00 am
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The crown was proud in the bite and therefore your dentist needed to adjust both the crown it self but also the opposing tooth. Small amounts of adjustments are perfectly acceptable. It is very difficult to make a crown, especially when the bite is not perfect that requires no adjustment at all.However these should be small adjustments and should ideally be re-fired with new glace over the adjustments as the glace will have been removed during adjustment. When using ceramic fused to a metal substructure type crowns, more tooth has to be removed to allow sufficient space AND THICKNESS to prevent fracture from happening. I think it sounds like the ceramic on the crown was 'thin' or insufficient space was allowed to accommodate the crown, hence all the adjustments. Since the metal coping is intact the tooth is actually fully protected underneath. However there is a growing emphasis on cosmetics and I would expect for that price that both function and aesthetics were delivered on. I am sure that your dentist will agree to re-visit the crown if you have this conversation.

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Posted by Dental Professional (Questions: 0, Answers: 1475)
Answered on 27/03/2012 12:00 am