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Medical Forum / General / Dentistry / December 2004Metal posts in crowns
Hi, Can anyone tell me what metal(s) are used for the posts in crowns please? Thank you. Lyn Lyn, it depends on what the dentist prescribed. elizzy >Lyn, it depends on what the dentist prescribed. >elizzy IF cast of course ,,, if pre-fabricated, then it comes as it is. I put in titanium posts, I'm sure there are many other types of metals used > Hi, > [quoted text clipped - 4 lines] > > Lyn > I put in titanium posts, I'm sure there are many other types of metals used Out of interest... Is it safe to have an NMR/MRI scan with metal in your head? Big magnets and all that. That's a thought! Surely the hospitals would ask about fillings if it wasn't safe...but then again....they stuff amalgams in our mouths without telling us there's mercury in them! I'm curious now about this one myself! It's not so much the fillings but the metal posts if one has a lot of crowns which I'm wondering about. Lyn > I put in titanium posts, I'm sure there are many other types of metals used Out of interest... Is it safe to have an NMR/MRI scan with metal in your head? Big magnets and all that. >That's a thought! Surely the hospitals would ask about fillings if it >wasn't safe...but then again....they stuff amalgams in our mouths >without telling us there's mercury in them! I'm curious now about this >one myself! It's not so much the fillings but the metal posts if one >has a lot of crowns which I'm wondering about. They frequently put you on the tilting table and then tilt it upside down ... if mercury starts dribbling out of the corner of your mouth, then there is mercury fillings in there ..... Mercury is liquid at room temerature and therefore can only be used on lower teeth as it drips out of uppers way too fast. They once tried using frozen mercury for fillings but then if you ate Popsicles a lot, they would constantly stick to the cold surface. NO GOOD. Joel >Lyn > [quoted text clipped - 7 lines] >and >all that. lol lol Good one Joel. Not sure what's going on with the postings, but your first two didn't show up until after your third one here. I was wondering where you were.....this one gave me a great laugh. lol lol I sure needed it.Thanks for cheering me up. The prospect of a Christmas without my soulmate with me has really brought me down lately (he died in July)...I needed a laugh and this gave me one. Thanks. :-) Lyn >That's a thought! Surely the hospitals would ask about fillings if it >wasn't safe...but then again....they stuff amalgams in our mouths >without telling us there's mercury in them! I'm curious now about this >one myself! It's not so much the fillings but the metal posts if one >has a lot of crowns which I'm wondering about. They frequently put you on the tilting table and then tilt it upside down ... if mercury starts dribbling out of the corner of your mouth, then there is mercury fillings in there ..... Mercury is liquid at room temerature and therefore can only be used on lower teeth as it drips out of uppers way too fast. They once tried using frozen mercury for fillings but then if you ate Popsicles a lot, they would constantly stick to the cold surface. NO GOOD. Joel >lol lol Good one Joel. > [quoted text clipped - 6 lines] > >Lyn Sorry to hear that ....... Joel >>That's a thought! Surely the hospitals would ask about fillings if it >>wasn't safe...but then again....they stuff amalgams in our mouths [quoted text clipped - 14 lines] > >Joel [top post reformatted for your convenience] > > I put in titanium posts, I'm sure there are many other types of > metals [quoted text clipped - 8 lines] > That's a thought! Surely the hospitals would ask about fillings if it > wasn't safe... I had an MRI once. They asked about "any sort of metal whatsoever", which would include fillings. But to answer the question: Yes, it's safe to have an MRI with fillings in your mouth. Even if you have a lot of them. > It's not so much the fillings but the metal posts if one > has a lot of crowns which I'm wondering about. It's safe with stainless steel crowns. Been there, done that. But what about implants? Those are much larger than the posts used with crowns. It would sure suck to have the magnets in the MRI machine rip one of those out of your head, huh. >But what about implants? Those are much larger than the posts used with >crowns. It would sure suck to have the magnets in the MRI machine rip >one of those out of your head, huh. Titanium is non magnetic. -- W_B Take out the G'RBAGE wubbabubbazG@RBAGEyahoo.com > >But what about implants? Those are much larger than the posts used with > >crowns. It would sure suck to have the magnets in the MRI machine rip > >one of those out of your head, huh. > > Titanium is non magnetic. Alloys sometimes are, to some degree, and dental implants are not necessarily 100% titanium. But apparently the problem is more of "artifacts" appearing on the MRI output, rather than having the magnets in the machine move the implant itself. (So the doc interpreting the scan needs to know about the implant in order to draw an accurate conclusion.) Well I do know that brain stents will keep you out of the MRI machine. I guess they can be magnetic and could tear through tissue if given enough magnetic attraction. Of course they have you remove any external metal such as earrings. As far as metal like posts and such in you teeth, I don't think your tooth is going to come flying out and stick to the MRI. > > I put in titanium posts, I'm sure there are many other types of metals > used [quoted text clipped - 3 lines] > Is it safe to have an NMR/MRI scan with metal in your head? Big magnets and > all that. >Well I do know that brain stents will keep you out of the MRI machine. I >guess they can be magnetic and could tear through tissue if given enough >magnetic attraction. Of course they have you remove any external metal such >as earrings. As far as metal like posts and such in you teeth, I don't think >your tooth is going to come flying out and stick to the MRI. I guess you have not seen the posts I put in ...... HUMOR .... I actually do good posts. EVERYTHING ELSE still undertermined. Joel >> > I put in titanium posts, I'm sure there are many other types of metals >> used [quoted text clipped - 4 lines] >and >> all that. >> I put in titanium posts, I'm sure there are many other types of metals >used [quoted text clipped - 3 lines] >Is it safe to have an NMR/MRI scan with metal in your head? Big magnets and >all that. You only have to worry about ferrous metals and rare earth magnets. -- W_B Take out the G'RBAGE wubbabubbazG@RBAGEyahoo.com I don't use very many posts anymore. They do not strengthen the tooth. I used to use stainless steel or titanium. Now I use resin fiber when they are indicated to help retain the build up material. Fawks > Hi, > [quoted text clipped - 4 lines] > > Lyn I use a paper clip or old dental drill bit when I'm running short on supplies. <jk> > I don't use very many posts anymore. They do not strengthen the > tooth. I used to use stainless steel or titanium. Now I use [quoted text clipped - 10 lines] > > > > Lyn Hi Steven, Does that mean that a person can have a crown which does not contain any metal at all, so it's safe for people with metal allergies? Thanks. Lyn From: Steven Fawks <tuthjoc...@earthlink.net> - Find messages by this author Date: Tue, 21 Dec 2004 19:39:42 GMT Local: Tues, Dec 21 2004 11:39 am Subject: Re: Metal posts in crowns Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse I don't use very many posts anymore. They do not strengthen the tooth. I used to use stainless steel or titanium. Now I use resin fiber when they are indicated to help retain the build up material. Fawks - Hide quoted text - - Show quoted text - > Hi, > Can anyone tell me what metal(s) are used for the posts in crowns > please? > Thank you. > Lyn Reply > Hi Steven, > [quoted text clipped - 4 lines] > > Lyn Yes, there are crowns without metal. I would recommend an NTI device if you had them placed on posterior teeth. Most metal allergies relate to Nickel. This metal is easily avoided in the construction of porcelain fused to metal crowns. Just specify a 'high noble' alloy. JMO, Fawks >Hi, > [quoted text clipped - 4 lines] > >Lyn YUP, first of all, carbon polymer is better ....... of the metals, we have DENTATUS titanium and DENTATUS gold plated ...... We have lots of steel posts (stainless)... And there are custom cast gold posts ...... Joel Thanks for the replies...I'd appreciate some more if possible. :-) Lyn Can anyone tell me what metal(s) are used for the posts in crowns Aluminum, gold, silver, nickel, stainless, fiberglass, composite, resin, carbon fiber, acrylic, platinum, titanium, brass, copper, amalgam, palladium, chromium, and others. Why do you ask?  Signature~+--~+--~+--~+--~+-- Stephen Mancuso, D.D.S. Troy, Michigan, USA .................................................... This posting is intended for informational or conversational purposes only. Always seek the opinion of a licensed dental professional before acting on the advice or opinion expressed here. Only a dentist who has examined you in person can diagnose your problems and make decisions which will affect your health. ...................... > Thanks for the replies...I'd appreciate some more if possible. :-) > Lyn > > Can anyone tell me what metal(s) are used for the posts in crowns This is from Sue,,,,,, Member Join Date: Oct 2004 Posts: 627 no... and yes. -------------------------------------------------------------------------------- Will the MR imaging affect the fillings in my teeth? No, MR imaging will not cause fillings in your teeth, if in proper condition, to dislodge or come out. The metal in most fillings is not affected by the MR system's magnetic field. However, the fillings may cause some distortion of the images if you are having a scan of your neck, brain or facial area. Can I have an MR exam if I have braces on my teeth? Patients with braces may receive an MR imaging examination. However, if you have braces and need MR imaging of your brain or facial area, the MR system may have difficulty "tuning" to your body. The MR tuning process is similar to tuning a radio to a specific frequency or radio station. This tuning process can be "confused" if the patient has metal in his or her body, particularly if the metal is in the area being imaged. Unfortunately, there is no way to know in advance how much distortion from braces may result on MR images of the head, face or upper neck. >Hi, > [quoted text clipped - 4 lines] > >Lyn And for people with metal temporomandibular joint replacements, the MRI for brain study is more than not an option. My decision making process included this "problem" back in 1991/1992. However, there was hope that technology advancement over my lifetime might resolve this issue but I had to accept this limitation for many years to come. TW > This is from Sue,,,,,, > [quoted text clipped - 34 lines] > > > >Lyn True, Fillings are not iron. Iron is magnetic, fillings are not. If you have IRON fillings and you get MRI, then you quickly learn the meaning of the term, FERROUS WHEEL." OVERHEARD IN THE MRI WAITING ROOM: ONE LADY: "My son's in-laws are in the iron and steel business." SECOND LADY: "Yeah her mother irons and her father steals." Joel >Hi, > [quoted text clipped - 4 lines] > >Lyn |
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