Porcelain Fused to Metal Crown Preparation - PFM Canine
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- čas přidán 25. 07. 2018
- In this video, Dr. Richard Stevenson, stevensondentalsolutions.com, demonstrates the steps required to prepare a canine on the typodont for a ceramic-metal crown (PFM).
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Thanks for watching! - Krátké a kreslené filmy
That’s honestly one of the best crown preps I’ve ever seen
I'm amazed how smooth you finish every step of the requirement. The lingual approach is being my major problem. Thank you so much for your helpful video !
Thank you Doctor! Stayed tuned for more...
Doctor to be :)) , Just a student. I have watched it 3 times already. I wish I could reach that level of perfection. Thank you so much for your response Doctor :) Can't wait for more !
Wow!!!!! Thank you thank you thank you soo much...it is a beautiful preparation, and really really helpful. I had requested for a canine prep and you just made one before my bench test ..thanks ..really appreciate .
how lucky are we to be able to see master at work, i am grateful for all the time and effort you put in your videos. thank you
My pleasure!
Thank you Dr.Stevenson for sharing this amazing video !
Thank You Dr. Stevenson for sharing, I hope I have I set of your Burs
Thank you,Dr. Stevenson for sharing. Nice work.
Thank you! Dr. S
This depth plane technique is very amazing and effective .. thank you doctor ♥️♥️♥️ waiting from Egypt all your new amazing skills
Great - more coming soon!
this video has really helped me ..im having a major problem trying to do a pfm 13 n 23 within one hour, (thats my exam requirement)..your video made it a bit easier , thanks ! i struggle with preparing the mesial part of canines ... n the disto lingual area
Great - keep at it - it'll come with dedicated practice!
Yes this lingual approach is fantastic for bite reduction and to give space clearance ..thanks Doc..
Hi Dr Stevenson yes this helped me a lot . Can u pl post upper second premolar and lower first premolar and a class 4 composite restoration on Kilgore precut teeth . Thanks
Awesome preparation sir.. very nice to see your video.. ur work is really amazing Sir. One can get lot of confidence by seeing ur videos sir.
Great! Thank you for watching.
amazing that help me so much
Thanks for this video. One of the best canine preparations
really appreciate the effort , well done doc
Thank you
Thank you so much! I used your techniques today in class and it was amazing!
Wonderful!
Thank you Dr stevenson amazing video ❤
My pleasure! All the best, Dr. S
amazing preparation
Thank you! Dr. S
thank u so much dr u really helped me👍🏻
Happy to help.
Fantastic
Dr Steven, can you please make a video on common mistakes seen in pfm preps and how to correct them.Thank you
Yes, that is a great suggestion!
@@StevensonDentalSolutions looking fwd Dr Steven
@@someonesomeday1 Soon, I hope!
Yes please!!!
@@mariaph9700 You got it!
Touch of a genius.
I try my best, thank you.
Great work
Thank you for sharing this video
Can you please teach how to prepare PFM with wings for canine
Thank you - your request is noted.
Thanks for this video. Please can you upload Maxillary first molar class 2 amalgam preparation .
Yes, for sure!
The cleanish preparation ❤
Thank you for your kind words. Dr.Stevenson
Hello Dr.Stevenson! Your calibration instruments are awesome! If it were not for the massive international shipping and taxes, our dental school students would have purchased it right away :(
Anyway, thank you for all your great solutions, sir!
Thank you - wish we could make a deal!
@@StevensonDentalSolutions I and my fiance will be looking foward to visiting you and getting some great tips on how to be a dental rock star 😄 after our board exam in Korea :) (hopefully the covid calms down by then!) Thank you sir!
@@StevensonDentalSolutions I'm the fiance :P We're a huge fan of yours!
@@92cindychoi Thank you!
master!
Great work👍
Nice
Dr stevenson would you please teach us how to assess the crown prep with the putty index really appreciate your help and your time
Okay will put this in my next crown video!
@@StevensonDentalSolutions thanks Dr great appreciation
You are the best teacher I have found online.Thank you.
Thank you!
you are a legend, could you kindly do a video for feldshpatic vs. lithiumdisilicate-emax veneers preparation, how to avoid failures of fractures,chipping,repairs,debonding,preps of incisal edge,preps for closing diastemas and how to mask a dark stump-?
best regards
Great ideas - you got it! Coming soon the the channel
Good job 🌹
Thanks
Amazing
Thank you! Dr. S
Hi, fantastic video. I like your methodical and thorough approach, I recommend your channel to my students!
Could you please do a video on temporisation of crown/veneer preparations? Thanks
I will add this to the queue, thank you professor!
This is so helpful, thanks for posting! Do you by chance have any tips for finding the long axis of the canine when doing this prep? That’s where I struggle the most- thanks!
Think about where the tooth would launch if it were a spaceX rocket and make your bur parallel to that - really! Not kidding, try it.
@@StevensonDentalSolutions hahah love it, thank you!!
@@StevensonDentalSolutions Great!
Beautiful....
Thank you, Doc!
Try try to purchase the product but it is showing unavailable in your website
Sir honestly u have the excellent teaching skills plz make the crown preparation videos on natural tooth
I have one in the Zirconia video - but will do more - clinically!
@@StevensonDentalSolutions for pfm??
As usual , a great prep. Could you share some tips to make distolingual reduction in lower canines easier specially in the fourth quadrant. Thanks
You got it - on the to do list!
Thanks a ton . Waiting eagerly :)
@@racingadam.3533 :)
Thank you doctor for your efforts to teach us.
But I've a question...
What about using a wheel diamond stone to reduce the palatal surface including the cingulum before or even after the tapered stone with flat or rounded end to draw the finish line?!!!
Works equally well - very fast too! Thank you for the suggestion.
Thank you so much mentor! Could you please tell me what is the right (or perfect) working position and the position of the head when doing lingual reduction on dental simulation head.
I prefer 11-12 o'clock. From here you may turn the head either towards you or away to gain better access and visualization. Best wishes! Dr. S
thx
Thank you Doc!
Dr steve can u pls teach out to do a complex amalgam rest with fast set amalagma ... sdi permite ect pls... its part of my exam ...
Can u also help with 46 n 36 pfm prep amd how to view n remove undercuts from pfm prep
I will add this to the queue - good suggestions!
Thank you 🇺🇬
My pleasure!
Thank yoy for sharing your video!!
😊😊😊
Do you use a high-speed handpiece
or an electric motor handpiece
when preparing the teeth in the oral cavity.
Yes, but also slow speed or electric for finishing. Thank you for your question.
@@StevensonDentalSolutions Thank you for your kindness
Great
What is the minmum length of the preparation should be to have resistance and retention form dr ?
usually if you prep to the tissue level and reduce 2.0 mm from the incisal, you'll have enough length - it will vary between typodonts and clinical practice, but 3 mm vertical walls mesial and distal would be sufficient.
Sir can I have mandibular canine preparation for omg crowns plz
For pfm crowns plz
Any video of PFM on lower canine?
Not yet, but this is a good idea. Will put this on the list!
Hi can you suggest a book that has all the step by step crown preparation?
Shillingburg Fundamentals of Tooth Preparations: www.amazon.com/Fundamentals-Tooth-Preparations-Porcelain-Restorations-ebook/dp/B07ZFJYZXC/ref=sr_1_fkmr0_1?dchild=1&keywords=Shillingburg+anf+Fisher+Dentistry&qid=1586454527&sr=8-1-fkmr0
I wish I may become so perfect at crown cutting 😮
Thank you - practice for many hours!
Also i find bur marks on my proximal wall?How can i avoid that?Thank you
Keep a thin shell between the axial wall and the adjacent tooth - use a thin bur like an 859-010. After breaking proximal, you can progressively increase bur diameters...
doc could you advise how to figure out if the handpiece or the bur is not working optimally?? the frequency of changing the bur or handpiece and the optimum cutting speed?
I change diamond burs after 3-5 preps. If cutting dry, even more often. The handpeiece should be lubricated daily. and when you turn the bur with your fingers it should move freely with no resistance. Other than that, keep experimenting to find your zone...
@@StevensonDentalSolutions thanks for sharing doc
@@drabhibds My pleasure
Hey.. Did you use 847 KR supercoarse or fine grit??
847KR-016 is considered a medium grit and has 100 micron diamond particles, and has no color ring on the bur shank. The 6847KR-016 is a coarse grit and has 125 micron diamond particles and has a green ring around the shank. The 5847KR-016 is an extra-coarse grit and has a black ring around the shank. The finishing diamond in this shape (the *847KR* shape) is the 8847KR-016, with a red ring on the shank with 30 micron particles - a fine grit. I use the 847KR followed by the 8847KR, however it works equally well to use the coarse 6847KR instead of the 847KR.
hi, doc. what do you call to that instrument you used for clearance and measurement?
RGS 1-2 and RGS 3-4 available at stevensondentalsolutions.com
Why did you not use end cutting bur, instead using it at the end?
I found that, when I use end cutting bur while doing finishing line on buccal surface, my preparation tends to have equigingival shoulder on line angles.(any suggestions to improve on this plz)
The end cutting bur is potentially very dangerous, as it can cause internal undercuts. It should be used to simply refine the shoulder carefully. Keep the finish line 1 mm above the tissue before refining - this way, the end result will be 0.5 mm in most cases.
@@StevensonDentalSolutions thank you sir. God bless you
How do you smoothen the margin ?
Usually with a 30 micron grit diamond, like a 8847KR-016 on slow speed.
Hello, Dr.
The margin width is not constant when preparing. And the margins are shaped to be rugged.
What should I check for?
Great questions: If you have an electric handpiece, turn it down to 2500 and use a finishing diamond to smooth the finish line. Otherwise, use stall-out speed or even a slow speed fitted with a friction grip attachment to refine. Correcting uneven depth takes practice but try using the bur tip to define it more uniformly - the tip of the 8847-016 is 1.1 mm. Another great bur to try is Brasseler's 8881-012 - Best to you, Dr. S
@@StevensonDentalSolutions
Thank you so much for your kindness.
I use only a high-speed handpiece, not an electric handpiece.
Is it possible to prepare teeth with FG low speed handpiece?
It looks like you're using a fine bur(red band).
Hello doctor. In Australian Dental Council exams we have to prepare 1.2mm shoulder. When I do that I tend to get more cutting from proximal areas. Is their a criteria for proximal cutting? Or as long as the taper is fine and margin in transitioning it's ok?
As long as the measurement is 1.2 and the taper is correct, the results wil be good. If you can use a more narrow bur at first, like a 850-014 this might help...
@@StevensonDentalSolutions sir I mean is there a over cutting criteria from proximal? For ideal preparation?
@@mohitpatel3757 it would be anything 1.5 or more.
@@StevensonDentalSolutions Thank you.
@@mohitpatel3757 Happy to help - best wishes.
What do u mean when they say butt joint on labial margin???how do u check it precisely
Try to achieve 91-110 degrees with respect to the root or unprepared apical tooth surface on the facial finish line. You don't want this to be less than 90 degrees, as this would leave unsupported tooth structure.
Good work doctor.. Plz can you tell me where i make bevel in all teeth.. iam still astudent .. i know only the bevel in the lower molars in the buccal cusp and the upper molars in the palatal cusp .. Is there abevel in the upper and lower premolars and the upper and lower anteriors?
For posterior teeth, bevel the functional cusps. For anterior teeth, simply reduct enough for incisal translucency, facial ceramics and lingual clearance for function. I'd recommend that you carefully watch the PFM and FGC playlists.
@@StevensonDentalSolutions thanks doctor.. So the bevel in the upper premolars is the platal cusp and the lower premolars is the buccal cusp as the molars.. is this right?
@@mohamedshandy4680 Correct!
@@StevensonDentalSolutions thanks for all things 👍
Hello doctor, does it hurt?
Not at all - local anesthetic and a well made temporary crown make this essentially pain free.
I have this practical coming up. #9 - #11 bridge prep! Lord save me.
It’s all about line of draw. Since the teeth don’t naturally line up, you’ll need to taper the distal of the canine more than if it was a single prep. Also, make sure that you have even shoulders of adequate depth. Making the preps smooth is good but not as important. Best wishes!
What is the difference between the preparation of PFM and all ceramic and zircone
Please
PFM: Facial Shoulder 1-1-2 mm deep and relatively sharp internal line angles, and minimal reduction on the lingual with a chamfer margin. ACC (e.max): 360 shoulder with rounded internal (aka fillet) which may measure between 0.5 for e.max in the most conservative cases to as much as is needed for esthetics, but typically about 0.6-0.8 mm. MONOLITHIC ZIRCONIA: Same as ACC but must be at least 0.8 mm deep axially, but may be less on the occlusal.
@@StevensonDentalSolutions thank you very much Dr I love ur vedio and ur channal and I hope to be like u in the future ❤❤
Why not use orientation grooves?
Great option - just showing a different technique.
Can you please please teach how to use the hand instruments properly.. Please... I am struggling with it. Also intra proximal... Please help.
Like chisels? For which prep?
@@StevensonDentalSolutions enamel hatchet and gingival marginal trimmer plus for interproximal I always end up with over tapering.. Any tip for that please... Thank you for your reply.
Can you upload MOD on maxillary molar please
Gold or Ceramic?
Amalgam MOD please
Yes - will do this weekend!
Yes ... thank you in advance 😊
👌
I went to wrong dentist, to late for me. No shoulder.ground teeth way down.
bummer
Can u write the measurement of prep pleas
Iam know from incisal 2mm
From lingual clearance 1.5 mm
and know from facial 1.5 mm whu u take 1mm??? and from lingual axial what is the measurment please
The final prep:
2 mm incisal, 1.5 mm facial at incisal 1/3 and 1-1.2 mm at margin. 1-1.5 mm lingual clearance and 1-1.5 mm lingual reduction in fossa. Lingual axial wall is 0.5-0.7 mm (chamfer). I start with less and finish to the final measurements to avoid over-cutting.
@@StevensonDentalSolutions thank u verrrry much
@@DragoDent My pleasure!
Im trying to follow this. The only problem im facing is that im unable to reduce the lingual/ palatal part evenly ..i either reduce too much or too little. Cant use any of the guides u use except putty in my exam. Same problem with the upper central incisor. Then it shows on the temporary crown i make after wards... would appreciate any tips from u in regards to doing the palatal / lingual reduction evenly . Thanks dr !
Use the tip of a diamond which measures 1.0 mm, like an 856-016 and use it as a depth cut, following the contour ideally. You might also try the "Tenon Prep" from my video - works really well!
@@StevensonDentalSolutions thanks,
Whats tbe tenon prep ? Which video is it in?
Just wanted to make a suggestion as well Dr., pls make a fb page aswell and upload ir videos there as well.
@@sameeraadeel5882 czcams.com/video/pI-Um57rzCI/video.html
Will try!
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absolutely ridiculous
gt8
Nice
Thx