Talk:Crown (dentistry)

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Contents 1 Understandability 2 lifetime 3 metal pins 4 Photos

[edit] Understandability

I don't entirely understand what's going on in the article, so I had some trouble effectively editing it. I took out one sentence:

Contamination by saliva and blood may lead to discolouration and inhibition of dentine bonding systems used to prevent microleakage.

because I altered the sentences preceding it, and I didn't understand it well enough to determine whether it made sense with my revisions. If anyone knows what the original author meant with the above, please feel free to add it back in a (hopefully) more readable manner.

The same applies to the "Process" section. I don't understand the process, so I can't edit the section too well. Still, it needs work; if you understand the section, please edit it! Starwiz 23:48, Apr 27, 2005 (UTC)

[edit] lifetime

i'm in the uk and the figures i've heared are more like 20 years does anyone know where the 10 year figure came from and what it includes? Plugwash 23:34, 11 October 2005 (UTC)

Yes, there should really be a citation for this. --Delirium 20:45, 24 February 2006 (UTC)

I've had a crown for over twenty years, so I don't think the 10 years is correct.Rt66lt 02:28, 20 March 2006 (UTC)

I agree a citation is needed, but certainly the number will be an average. I have seen crowns that have lasted less than 3 years. - Dozenist talk 03:06, 20 March 2006 (UTC)

What is possiblly true is that there are sufficiant badly fitted crowns to drag down the average significantly. I suspect it varys a lot by country too. Plugwash 18:43, 29 April 2006 (UTC)

At our lab, we guarantee crowns for five years. If the impression is good and the crown is crafted well and the fit is good with no major pressure from the opposing teeth, then there's no reason that a crown won't last practically forever.--SweetNeo85 21:27, 12 July 2006 (UTC)

[edit] metal pins

i'm sure i've heared that sometimes metal pins are placed in the root or even down into the jaw to support a crown. Is this true and if so should it be mentioned here? Plugwash 18:48, 29 April 2006 (UTC)

Metal pins are not usually placed for the crown itself. Metal pins are not placed into the jaw for a crown, unless you are referring to the screws used in implants. Metal pins are sometimes used for better retention in amalgam fillings or the build-up of a tooth. In that case, build-ups usually precede the placement of a crown, but the pin itself was not placed for the crown. I believe I have not heard of a pin being placed solely for a crown. - Dozenist talk 20:58, 29 April 2006 (UTC)

I just rember my mum telling me there was a pin of some sort involved when she had a crown done a long time ago. As you say it may have been part of a build up or similar rather than directly supporting the crown (i'm no expert). I also noticed dental implant links here and this page should probablly link back there. Some info on this "build up" process would be nice too. Plugwash 23:03, 29 April 2006 (UTC)

From my own currently ongoing crown installation, it seems like what is called "shoulder" in the article indeed has a part which somehow goes into the tooth, making it kinda lika a "pin". I could be wrong, but that how it looked. :) There was definitely a screw involved when I (in the same tooth) previously had a composite buildup made. (That doctor showed me and explained everything he did. I liked that. :-) ) --Regebro 20:15, 28 November 2006 (UTC)

[edit] Photos

While attempting to avoid criticism of the crowns in the photos, is there anyone who has pictures of maybe, more aesthetically pleasing crowns? Even a gold crown can look better than that lump that is in there. Same for the temporary. I'll try and find some myself, but seriously those are pretty bad. Dr-G - Illigetimi nil carborundum est. 16:37, 31 October 2006 (UTC)

I think it looked better now than last week, but yet there are no change... I could provide a picture of what I guess is a "shoulder", that I got installed today. :) --Regebro 20:18, 28 November 2006 (UTC)