Dental Question
12 September 2004, 11:34 AM
#31
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Thread Starter
I am an Engineer and not a Dentist, so shall tread carefully here - but, if in an engine block for example a stud sheared off in the block, what would an engineer do?
He would simply unscrew it, if there wasn't enough stud to grab hold of he would drill it out. Now, this operation is understood by a 1st year apprentice and would be carried out by one.
So, why, oh why, can't any dentist carry out the same operation on a tooth? Not being patronising, just really interested in the mechanics of the technique?
It doesn't answer the claim that he wanted to charge for a new crown, when my old one was perfectly serviceable!
Indeed, why he didn't take steps to stop the gum closing up??
Pete
He would simply unscrew it, if there wasn't enough stud to grab hold of he would drill it out. Now, this operation is understood by a 1st year apprentice and would be carried out by one.
So, why, oh why, can't any dentist carry out the same operation on a tooth? Not being patronising, just really interested in the mechanics of the technique?
It doesn't answer the claim that he wanted to charge for a new crown, when my old one was perfectly serviceable!
Indeed, why he didn't take steps to stop the gum closing up??
Pete
Last edited by pslewis; 12 September 2004 at 11:36 AM.
12 September 2004, 01:55 PM
#32
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Huxley posting HC's Machine
Pete Helloooooooooooo
Could you pm me to see if it's the same dentist that has just fleeced me to the sum of £400+
We must arrange a meet up the club again???
Paul
Pete Helloooooooooooo
Could you pm me to see if it's the same dentist that has just fleeced me to the sum of £400+
We must arrange a meet up the club again???
Paul
12 September 2004, 09:45 PM
#33
pslewis
neat question..... most dental posts holding crown in are not threaded, Hans and Peter Kurer sold lots of posts in the 60's and 70's that were threared like a nut and bolt. Unfortunately human dentine is not solid and is slightly elastic so not a good material to "tap". the otehr problem is that roots are tapered and wedging forces can break them.
Most dental posts for anterior teeth are now cemented into place. Some posts are carbon fibre or equvalent and bonded down the root to make a "monoblock" structure"
putting aside ultrasonic vibration for a minute the most common way of getting rid of unweanted posts are to use small hollow trephines. The market leader is a kit called a "Masseran Kit".
These are small hollow trephines which remove a "core" of material from the middle of the tooth inclusing the post and cement. The tooth is softer than themetal post so care needs to be taken (the reason why a metal post cannot be drilled out).
They are quite fragile and easilly damaged. at £17.35 plus VAt each (the last time I remember looking) it's quite easy to spend £120 getting a post out !!
Not a cost effective option on the NHS !! that's why specialists usually step in, either on the NHS or privately.
Cheaper than an Implant at £1.5k plus.
Does this help ??
Midlife.....
don't get me onto the subject of retrofit (re-using) crowns and bacterial microleakage
neat question..... most dental posts holding crown in are not threaded, Hans and Peter Kurer sold lots of posts in the 60's and 70's that were threared like a nut and bolt. Unfortunately human dentine is not solid and is slightly elastic so not a good material to "tap". the otehr problem is that roots are tapered and wedging forces can break them.
Most dental posts for anterior teeth are now cemented into place. Some posts are carbon fibre or equvalent and bonded down the root to make a "monoblock" structure"
putting aside ultrasonic vibration for a minute the most common way of getting rid of unweanted posts are to use small hollow trephines. The market leader is a kit called a "Masseran Kit".
These are small hollow trephines which remove a "core" of material from the middle of the tooth inclusing the post and cement. The tooth is softer than themetal post so care needs to be taken (the reason why a metal post cannot be drilled out).
They are quite fragile and easilly damaged. at £17.35 plus VAt each (the last time I remember looking) it's quite easy to spend £120 getting a post out !!
Not a cost effective option on the NHS !! that's why specialists usually step in, either on the NHS or privately.
Cheaper than an Implant at £1.5k plus.
Does this help ??
Midlife.....
don't get me onto the subject of retrofit (re-using) crowns and bacterial microleakage
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