| Author | Message | ||
     X5thxgearxfreak |
For those who sport dental prosthetics, such as crowns, cast crowns, bridges, implants, partials, dentures, etc... I could use some info, please, I'm on my hands and knees begging you! In our dental lab we use a particular alloy for crowns thats primarily palladium along with small amounts of gold, indium, and one tenth of one percent of rhodium. My question being, has anyone with a crown, whether it be a cast crown(all metal), or a porcelain fused to metal crown or bridge that is of a semi-noble to noble composition have any discomfort like a pulling sensation or pain on/around the tooth/teeth that have a crown/bridge during an MRI? I found out today that it's magnetic. I had to solder a bridge together and used my personal pair of hemostats which I magnetized, only to discover the bridge kept sticking to the hemostats. But this got me wondering the possible complications that could arise like having a crown of palladium and getting an MRI taken or walking through airport metal detectors. Let it be known this is not for my own personal knowledge but will also be relayed to the BDA(British Dental Association) and ADA(American Dental Association). My boss woke me up 10 minutes ago to tell me post this on "that BadWeB poppycock". My most gracious thanks to all. | ||
| Gunut75 |
I have a few. Never had any problems at all with airport metal detectors. I have not had an MRI since the crowns though. | ||
| Skntpig |
I got the gold. I think it's full noble cast crown. Only a few years old. No MRIs with it yet. No issues with metal detectors either. | ||
| Ulywife |
I have countless crowns and a bridge. I've not had any issues with any of them at airports, etc. The only medical test I've had run was a MRA several years ago. No issues there either. (Message edited by Ulywife on December 29, 2009) | ||
| Cowboy |
The only problem I have had with dental work was when I was diving,if they had a small flaw when they were being filed they would catch a air bubble when doing a dive below 100ft.) when you would surface you would feel like your head was going to blow off. | ||
| Ourdee |
I have some cast crowns(all metal), and some porcelain fused to metal crowns. During my last MRI I was busy feeling my whole body get warm from the injection of some magic potion. I did not notice any pulling or pushing in my mouth. Your results may vary but that was mine. | ||
| Ft_bstrd |
I think the problems with MRIs are with metal attached to soft tissues (heart valves, loose in skin, etc.). I think pins, crowns, fillings, etc. that are bolted to bone are fine. | ||
| Mr_grumpy |
Had a Bridge for over 20 yrs now & various crowns from porcelain to gold. Never had any probs at the airport but not had an MRI. The Microwave oven doesn't affect me either, the microwave oven doesn't affect me either, the micr... | ||
| Bluzm2 |
I did have a interesting incident recently with an MRI. I partially dislocated my left knee cap and bruised the under side of the knee cap and the top of the femer. (Old farts shouldn't play softball with the young guys..) Didn't know all of this until after the MRI.... I forgot to remove the metal glasses case from my back pocket when they put my knee in the tube. Nothing unusual at first but when they hit the right frequency, my left ass cheek started vibrating like I was being shocked! It took me a minute to figure out what was going on. Keep in mind that it was only my knee in the tube, my butt and torso were well out of the tube. The MRI have some amazingly strong magnetic fields. Neat stuff. I have lots of crowns too, some gold, some porcelain I didn't feel anything weird though. Doesn't surprise me though, magnetic energy falls off quite rapidly with distance. Brad | ||
| X5thxgearxfreak |
Thanks a ton guys. My boss is thankful as well. As for air bubbles, I would go back to your dentist and ask if they can use a resin based cement. It works kind of like a polyurethane glue where as it cures it slowly expands to fill voids unlike most UV cured cements which don't expand at all. I do already know that gold will not affect anything at all, that's why they use gold. The thermal conductivity somewhat matches that of teeth so if you get done eating anything cold the crown will return to regular temp just like real teeth. Where as some nickel-chrome alloys will keep cold longer thus imparting more pain since it'll stay colder longer. Using a pocket metal detector we were able to pick up a weak signal with an ingot of this palladium alloy in my mouth. Of course a pocket detector isn't going to be the same as one at an airport. However, I did bring an ingot back home and stuck it in my cheek and laid my head on the back of one of my old Cerwin Vega 15" speakers and it grabbed. It honestly kind of hurt, but it wasn't cemented to a tooth like a crown would be so it wasn't a very scientific test. Knowing how strong MRI magnets can be, I may have to pop my porcelain crown off and stick a palladium crown in place then get an MRI done. Again, bunches of thanks. | ||
| Mr_grumpy |
By the way Vic has Crowns. Yeah I know it's a bit tenuous but hey it's 11pm here & I've just got in from drinkies with the neighbours. Feeling no pain, time for bed. | ||
| Bobbuell1961 |
Never had a problem  | ||
| Ezblast |
Now there's a bottle opener! | ||
| X5thxgearxfreak |
Lol, I could try to make some 'grills' like Jaws' teeth. We've made grills before so I cant see how it would be a problem, only thing is that the lower alone would probably weigh a couple ounces. One would probably need heavy duty denture bond to wear them. |
