I have a great pleasure tonight in putting up a blog emailed to me by Pete Buchan. Pete is a fantastic dentist who is the principle of number 9 dental practice in Edinburgh. Although we will meet in person for the first time in a few weeks I’d like to think that thanks to the blog and our shared commitment to excellent dentistry we have become good friends.
Pete has been one of the most encouraging people of the blog and my dental aspirations since I started the blog and I’d like to take the opportunity to publically thank him!
Anyway it was with great pleasure that I opened this email:
I did this today and took some pics thought it might make and interesting post for your blog……
Firstly just take a minute to admire the endodontic result but also think what a great little trick to help you do better root fills with crowned teeth! Once teeth are root filled I think you can justify a bit more tooth loss too so if the patient does want to change to a PFM crown or all porcelain restoration this technique is even more perfect.
I hope you find this as useful as I did, another little trick for our collections!
It’s great to have people to bounce ideas off, “a clinical tribe”, and I find the more you share the more you get back. The important thing is to have an open mind and enjoy hearing about other peoples techniques. On some dental forums people are so defensive about how they do things.
I’ve long since realised that what I do may not be the best and I can honestly say that while I don’t exactly love my work being critiqued I love the people who have the kohones to tell me it straight. There friendship and feedback then mean a lot to me. They are also much cheaper than most CPD!
All the best
Chris







#1 by david Cunningham at March 11th, 2010
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nice idea, concerned at the lack of correction of the distal leakage at the crown margin. ? What type of stop is on the palatal canal on the endo? Where is this in relation to the true apex? why not new core and no bacterial re introduction from the stinky old crown? Maybe a putty template and an acrylic temp at chairside?
#2 by ChrisO'C at March 11th, 2010
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Good points Dave. I thought the palatal looked just about spot on, though on review it could be just be long… it’s hard to tell. I would trust in Pete’s tactile sensation.
I suppose I just thought that this technique was so much better than trying to go through the crown, especially in a newly fitted gold crown scenario. They are still weakened and need replacing with a big access cavity so why not do it this way.
In this case maybe an acrylic temp would be better but I think it would be hard to make it last 3 months without replacement. Maybe you could make it part built with composite or a lab made shim.
Also with the root filling completed and a seal of gic/composite over there should be no leakage into the root canal system even if the crown margin poor at least in the short term.
#3 by iqbal kathrada at March 13th, 2010
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hi
easier more conservative way is to use a Wam key, only need one tiny slot on buccal of crown and levers out easily with twisting motion
great endo
#4 by matt at March 13th, 2010
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Nice trick with the crown but even better endo. Why not just crack staight on with the new crown and avoid all the risks of a temporary. Back yourself, look at it, you can’t get a much better result and if you get an immediate core build and new crown on staight away the biologic conditions are kept as you intended them during the endo.
I would reserve this method for cases which haven’t gone as well as expected but have never seen it before so thanks for showing us.
#5 by DundeeDent at March 13th, 2010
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Hey there,
If the crown has been wiggled off and loosened with couplands, surely the forces involved with this would compromise the already squiffy marginal integrity? Would there be a way to, chairside, improve the margins like has been done with the slot, or would the composite be too weak without 2 walls of gold to hold it?
Like the sound of the idea though, just worried about further failure should the margins go again in the case of a long wait from the lab.
#6 by ChrisO'C at March 13th, 2010
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Yes, you could reline the whole crown with one of my favourite materials bosworth trim. Then polish back the distal ledge and use this.
you would be treating the old crown like a prefab metal temp you sometimes use for posterior teeth when you can’t get a matrix.
That would work pretty well I think
#7 by Pete Buchan at March 16th, 2010
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Here is a link to some info on the Wam Key
http://www.wamkey.com/EN/produit/103-/WAMkey-more-than-a-crown-remover
#8 by ChrisO'C at March 21st, 2010
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Pete some of that stuff looks really good. Have you used any?
Do you own a WAM??
#9 by Toronto Dentist Blog at July 16th, 2010
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Thanks Chris. Good MacGyver Dental tip to add to my repertoire!
Joe

http://www.RoyalYorkDental.com
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