The skill of Dr. Stevenson should not be underestimated. His YT vids are amazing, but don't despair if you don't reach his level. This clinician has a level of clinical skill that far exceeds most and it is amazing to watch and have aspirations to achieve. With practice you should be able to follow his habits and achieve a passing score on licensure. Thank you Dr. Stevenson
Just wanted to say that I watched this video non stop during preparation for my Approbation exam in Germany. I thank you from the bottom of my heart Doc!
Before I get to refinement, my preps always look like an army of little squirrels came and gnawed away at the teeth like a corncob. Obviously you’ve been doing this for way more years than me but super impressed how smooth your preps turn out even from the very beginning. Thanks so much for this video!! I will try starting out with little sections of plane reduction rather than a smoothing out a bunch of depth cuts
You, doctor are one of the best - "if not The Best"- whom I learn from. I really really thank you and appreciate making time and effort for this youtube channel. ❤️✨ and I'm looking forward to coming topics and videos 🙏🏻
I honestly don’t understand how this wonderful amazing demonstration that has 38000 views , have just 706 likes , please people give a like to this video , we all know this videos are extremely helpful and just amazing , the best UA-cam videos with the best demonstrations of dental procedures I have seen
Thank you for all your educational videos, Dr. Stevenson. Your videos have the best quality and are extremely helpful. You really deserve part of my dental tuition :)
Dr. Stevenson you give us always the right advice in the best possible manner ! Greetings from a dental student in Germany ! We appreciate you and your work. Keep it that way ! You are a honorable man and i want to thank you for sharing your skills and knowledge on the UA-cam platform with us ☺️
Great video as always dr Stevenson. Would it be possible for you to demonstrate your techniques for temporary/provisional restorations? Would love to see that!
Hi Dr Stevenson, I learned upper amalgam restoration from your video. I’m very grateful, I came across such a great demonstration. May I please request you to make lower amalgam MODL restoration as well, it could help me in clearing my registration exam. Thanks a lot. Have a great day.
thank you for the amazing video! It was super helpful. I Just want to make sure I am not missing something- I know ADEX requirements are always changing. Currently, the 2024 manual says that an occlusal reduction of 1-2mm for a cast metal crown adheres to the criteria. So 1mm would be sufficient occlusal reduction for a cast metal crown for the purpose of the exam- correct?
Thank you for this amazing video. Would it be possible for you to make a video about bridge preparation from canine to first premolar? Would appreciate that a lot.
Stevenson Dental Solutions My apologies for the confusion. I’m referring to A20AN-200 composite resin teeth. My school does not use the ModuPro/Acadental typodonts for our licensure exams. Instead, they use the CITA typodonts from Kilgore.
It's approximately 110 degrees from the A plane, assuming a 35 degree cusp incline angle, but the easier tip is to angle it so that the cusp tips on the lingual line up with the adjacent teeth.
Assuming no wedges, or bands: I use a careful approach from the facial or lingual with a stair stepping movement and a narrow diamond. It's hard to explain, so please watch other videos on crown preps where it is covered...
@@StevensonDentalSolutions and Dr., i have more questions: for the line of draw do you keep the bur between the plan on #3 and #5 only on the proximal surface or over the entire prep because thats where i am a little confused? The line of draw means all the margin should be visible when seen from 6 feet apart one eye close and in one plane right, and do cdca/adex allow wing on PFM? Sorry these is long but i would really appreciate it if you an explain thank you, Dr. shah
Hi Dr. Stevenson, is it ok to do axial reduction before occlusal reduction? For some reason my occlusal anatomy is not good if I start with occlusal reduction first, however I do know I need a lot more practice. Just wanted your opinion on that. Also Is there a way you could show the position of the handpiece through a video when using indirect vision for occlusal reduction for the bridge #3-#5. Thank you.
1. Yes, absolutely - the only challenge with this technique is breaking proximal contact (because it's so tall) - but if it's easier, keep on using this technique! 2). The video of this is difficult - I do this live for my students, but I will in the future... Thank you!
I'm looking over the WREB PFM prep grading criteria and all they say is that the PFM margin needs to be 1-1.5mm. From what I understand, that will work for the buccal margin but isn't the lingual chamfer margin usually 0.5mm? It was a little confusing to me and was afraid a 0.5mm lingual margin would be considered too shallow according to their grading criteria. Because of this, I know many students choosing to just do FCC for both posterior abutments since the WREB allows you to choose, to play it safe. Do you have any thoughts on this? Also, I see the burs you're using and I'm used to using an 856-012 or 856-014 for both chamfer margins and a shoulder margin (I just make a deeper chamfer if I'm doing a shoulder margin). Is this the wrong way to go about this?
Correct - the WREB criteria has changed - they want a deeper chamfer on the lingual. Use the 846-014 for the majority of the prep, and like you said, proceed deeper axially on the facial for a shoulder. And...yes, the FGC, Zirconia crowns are easier for sure.
How do recommend the transition from shoulder to chamfer on #5? I've decided to smooth the wings away because of potential draw issues. I appreciate your help. Thank you.
Good choice - the shoulder must be present in the esthetic area, namely the facial side of the mesial interproximal contact and the distofacial tooth line angle. From these two points lingually, the shoulder-chamfer transition occurs.
In reference to the transition, do I just go with the chamfer very very gently into the shoulder? What does the actual "meeting" point of the transition look like? Thank you. Please say hello to Savi for me. She's been huge for me. I appreciate you guys. This is the weekend I take my boards. I passed them in 1997 but here I go again. 🙂
Hello Dr Thanks for amazing videos Can i ask u question What is the difference between shoulder and chamfer preparation and when use them ? What type of burs used in preparation PFM Taper with round or flat ?
Shoulder approaches 90 degrees to the unprepared tooth surface and allows for ceramic materials to be close to 90 degrees and of adequate bulk for strength. Chamfer is a steeper declination angle forming a obtuse angle with the unprepared tooth surface and are used with metal materials to form a slip joint. PFM can use either a round ended or flat ended, as long as the finish line angle approaches 90 degrees and the axial depth at the margin is 1-1-2 mm.
Hello dear Dr.Stevenson, could you please make an amalgam restoration guide for class 2 cavity MO... Cause I've made 3 restorations for that cavity during past 2 days and it all fails due to a fracture in the proximal area and exactly distolingual part, I'm not sure why it keeps breaking there although I've made enough condensation and I was trying to be as gentle as possible during carving and pre/post burnishing and by the way I'm still a student. Please help me with that, I would really really appreciate it. *All the love for the great work you're doing to help people in your channel
Hi Dr. Stevenson, how important is to use loupes for the CDCA exam. Any loupes you recommend that are good and not too expensive? And what magnification do u think is good for a first time user. Thank you.
Do you recommend leaving the wings on the #5-PFM abutment? I saw a previous PFM prep video of yours where you blended away the wings at the end so it was a smooth transition. What is the benefit to keeping the wings versus smoothing them away? Is either way (wings vs smoothing away the wings) an acceptable method for the board exam? Thank you for your video, very helpful!
Both are acceptable. Leaving them creates a potential draw challenge, as the vertical walls created adds an additional set of vectors to consider. Smoothing them away if slightly more aggressive to the tooth, but not by much.
Can do either way - but I had the chair position and finger rest set for the A and C planes fo I usually do it this way - ending up bringing the lingual cusp tip back in line with the arch. Anyway is fine.
Use fine diamonds (red stripe) in friction grip slow speed attachment. Then use a Jiffy cup to create a smooth surface. Don’t try to create a high polish. We have these in our store.
I enjoyed your lesson! although I would have a question, what is line pf draw? what does draw mean? axial inclination of the abutment coronally? thank you
I've got a series done, coming out by the end of March. These take more time than bench videos, plus all kinds of issues, time in the chair, patient consents, etc.
Hi Dr.Stevenson, In this particular video, you have created secondary planes on both the facial and the lingual walls while in the other videos secondary planes are created on the lingual wall of upper molar/premolars and facial walls of lower molar/premolar and not both the walls. Can you please explain the reason?
I was asking this, and I got an answer: secondary planes are made on lingual of upper and facial of lower. That's the basic. But if you notice the original contours of the facial of the upper, you will notice that they are on 2 planes. So it's better to make them on 2 planes too. (So, all the facial and lingual of posteriors are on 2 planes except the lingual of lower). Hope that was helpful.
Hello doctor RGS. I have a question. Is it really good idea to put bridge on premolar and molar? I was taught in school that molars and canines are 1st class pillars and premolars are 2nd class pillars. And that two premolars together create 1st class pillar. And a bridge should always be on 1st class pillars on both ends. Shouldnt the bridge be extended to the canine then?
No bridge is better than an implant. There are no clinical studies to validate your dental schooling regarding fixed dental prostheses - only theories. Thank you for your question.
The skill of Dr. Stevenson should not be underestimated. His YT vids are amazing, but don't despair if you don't reach his level. This clinician has a level of clinical skill that far exceeds most and it is amazing to watch and have aspirations to achieve. With practice you should be able to follow his habits and achieve a passing score on licensure. Thank you Dr. Stevenson
Thank you - working on making better quality videos!
Just wanted to say that I watched this video non stop during preparation for my Approbation exam in Germany. I thank you from the bottom of my heart Doc!
Great! So glad it helped. Dr. Stevenson
Very great work, your videos are a good guide in my classes. All the way from Jamaica 🇯🇲
Before I get to refinement, my preps always look like an army of little squirrels came and gnawed away at the teeth like a corncob. Obviously you’ve been doing this for way more years than me but super impressed how smooth your preps turn out even from the very beginning. Thanks so much for this video!! I will try starting out with little sections of plane reduction rather than a smoothing out a bunch of depth cuts
Cool! Best wishes.
Took this prep as practical exam today and it turned out pretty well. Thanks again!!
Beautiful preps! As an older practitioner it's nice to revisit and always strive for excellence as you have demonstrated!
Great to receive this from you! Being a study club member has been my source of inspiration.
Thank you for a step-by-step guide!! I've watched this since I was a student, and it gives me deeper insights the more i watch it.
Great! Thank you for watching and you comment. Dr. S
You, doctor are one of the best - "if not The Best"- whom I learn from.
I really really thank you and appreciate making time and effort for this youtube channel. ❤️✨
and I'm looking forward to coming topics and videos 🙏🏻
So nice of you Doctor - wishing you the best!
I honestly don’t understand how this wonderful amazing demonstration that has 38000 views , have just 706 likes , please people give a like to this video , we all know this videos are extremely helpful and just amazing , the best UA-cam videos with the best demonstrations of dental procedures I have seen
Thank you for all your educational videos, Dr. Stevenson. Your videos have the best quality and are extremely helpful. You really deserve part of my dental tuition :)
Ha Ha! Thank you!
Thank you sir, your videos are really amazing. Never stop making them because there are many tips to take away from them. 🙏😊
Great, thank you!
Dr. Stevenson you give us always the right advice in the best possible manner ! Greetings from a dental student in Germany ! We appreciate you and your work. Keep it that way ! You are a honorable man and i want to thank you for sharing your skills and knowledge on the UA-cam platform with us ☺️
Thank you for watching!
Im a french student in Portugal, thank you so much for yours advises it’s really helpful
Great! Thank you for watching.
Great video as always dr Stevenson. Would it be possible for you to demonstrate your techniques for temporary/provisional restorations? Would love to see that!
I shall - thank you!
Hi Dr. Stevenson, all your videos have been a great help. Could you please upload a video for the endodontic portion of the CDCA exam.
Great idea - I will with my endodontics friend - coming soon.
@@StevensonDentalSolutions I highly appreciate it. Thank you!!
@@pavneettak184 Happy to help.
Hi Dr Stevenson, I learned upper amalgam restoration from your video. I’m very grateful, I came across such a great demonstration. May I please request you to make lower amalgam MODL restoration as well, it could help me in clearing my registration exam. Thanks a lot. Have a great day.
Did you want the prep or the restoration or both?
Stevenson Dental Solutions I just want the restoration and carving demonstration with MODL lower. Thanks doctor, really appreciate you.
It is an inspiration for young dental professionals
Awesome! Thank you Doctor!
Thank you for this video
Definitely passes every board :)
once again thank you for sharing your helpful knowledge.
My pleasure
Ur works are really good dr...I learned crown cutting from ur videos dr...looking forward for more updates dr...❤
More coming soon - thank you, Dr. Stevenson
thank you for the amazing video! It was super helpful. I Just want to make sure I am not missing something- I know ADEX requirements are always changing. Currently, the 2024 manual says that an occlusal reduction of 1-2mm for a cast metal crown adheres to the criteria. So 1mm would be sufficient occlusal reduction for a cast metal crown for the purpose of the exam- correct?
Lovely preps. Thanks for the tutorial 👍👍
I usually prep my premolar first and copy the line of draw on the molar. The molar has more tooth to lose if necessary
okay
Thank you for this amazing video. Would it be possible for you to make a video about bridge preparation from canine to first premolar? Would appreciate that a lot.
I will put this great suggestion in the queue
As always, great video! Would you be willing to make a video for a Class III composite restoration? Thanks!
Beautiful preps and video! Would you be able to demonstrate these 3-5 preps on CITA teeth? It would be greatly appreciated. Thank you!
ModuPro Pros teeth. Yes.
Stevenson Dental Solutions My apologies for the confusion. I’m referring to A20AN-200 composite resin teeth. My school does not use the ModuPro/Acadental typodonts for our licensure exams. Instead, they use the CITA typodonts from Kilgore.
Hi
Lovely prep, can you please explain the angulation for the b plane reduction? is is same as a plane but on opposite side? thankyou
It's approximately 110 degrees from the A plane, assuming a 35 degree cusp incline angle, but the easier tip is to angle it so that the cusp tips on the lingual line up with the adjacent teeth.
amazing tips i have question how do i break a contact without damaging the adjacent tooth ?
Assuming no wedges, or bands: I use a careful approach from the facial or lingual with a stair stepping movement and a narrow diamond. It's hard to explain, so please watch other videos on crown preps where it is covered...
@@StevensonDentalSolutions thank you so much sir for your promt reply
@@StevensonDentalSolutions and Dr., i have more questions: for the line of draw do you keep the bur between the plan on #3 and #5 only on the proximal surface or over the entire prep because thats where i am a little confused? The line of draw means all the margin should be visible when seen from 6 feet apart one eye close and in one plane right, and do cdca/adex allow wing on PFM? Sorry these is long but i would really appreciate it if you an explain thank you, Dr. shah
Thank you Dr for these videos. What is cervical bevel ?
You are welcome! The "Cervical Bevel" is just another name for a chamfer like finish line, an angle which declines gingvally.
thank you doc . I need your tips and tricks for access cavity prep for upper central incisor and lower premolar for my practical exam
okay - in the queue!
@@StevensonDentalSolutions thanks alot!
Happy to watch doctor
Great - thank you Doctor.
Stevenson Dental Solutions which loupes are you using doctor?
Is it zumax HL 8200 is good?
Hi - I have a few pairs and really like Univet (made in Italy). Not familiar with Zumax...The key is can you see better?
Stevenson Dental Solutions thanks 🙏 for ur great replay doctor
By the way which microscope do you use& suggest for me good one!
I use the Zeiss Extaro 300 - it's amazing, but very pricy. I have also enjoyed Global and Leica as well, but Zeiss was my decision in the end.
Hi Dr. Stevenson, is it ok to do axial reduction before occlusal reduction? For some reason my occlusal anatomy is not good if I start with occlusal reduction first, however I do know I need a lot more practice. Just wanted your opinion on that. Also Is there a way you could show the position of the handpiece through a video when using indirect vision for occlusal reduction for the bridge #3-#5. Thank you.
1. Yes, absolutely - the only challenge with this technique is breaking proximal contact (because it's so tall) - but if it's easier, keep on using this technique! 2). The video of this is difficult - I do this live for my students, but I will in the future...
Thank you!
@@StevensonDentalSolutions Got it. Thank you sir.
@@pavneettak184 My Pleasure
I liked crown preparation cos you dr. Amazing video. Can i ask you pls the advantages of vertical wings on the premolar ? Thqnx in advance
Wings are just more conservative, less tooth structure is removed interproximally. The walls of the wings might enhance resistance firm as well.
I'm looking over the WREB PFM prep grading criteria and all they say is that the PFM margin needs to be 1-1.5mm. From what I understand, that will work for the buccal margin but isn't the lingual chamfer margin usually 0.5mm? It was a little confusing to me and was afraid a 0.5mm lingual margin would be considered too shallow according to their grading criteria. Because of this, I know many students choosing to just do FCC for both posterior abutments since the WREB allows you to choose, to play it safe. Do you have any thoughts on this? Also, I see the burs you're using and I'm used to using an 856-012 or 856-014 for both chamfer margins and a shoulder margin (I just make a deeper chamfer if I'm doing a shoulder margin). Is this the wrong way to go about this?
Correct - the WREB criteria has changed - they want a deeper chamfer on the lingual. Use the 846-014 for the majority of the prep, and like you said, proceed deeper axially on the facial for a shoulder. And...yes, the FGC, Zirconia crowns are easier for sure.
How do recommend the transition from shoulder to chamfer on #5? I've decided to smooth the wings away because of potential draw issues. I appreciate your help. Thank you.
Good choice - the shoulder must be present in the esthetic area, namely the facial side of the mesial interproximal contact and the distofacial tooth line angle. From these two points lingually, the shoulder-chamfer transition occurs.
In reference to the transition, do I just go with the chamfer very very gently into the shoulder? What does the actual "meeting" point of the transition look like? Thank you. Please say hello to Savi for me. She's been huge for me. I appreciate you guys. This is the weekend I take my boards. I passed them in 1997 but here I go again. 🙂
Hello Dr
Thanks for amazing videos
Can i ask u question
What is the difference between shoulder and chamfer preparation and when use them ?
What type of burs used in preparation PFM
Taper with round or flat ?
Shoulder approaches 90 degrees to the unprepared tooth surface and allows for ceramic materials to be close to 90 degrees and of adequate bulk for strength. Chamfer is a steeper declination angle forming a obtuse angle with the unprepared tooth surface and are used with metal materials to form a slip joint.
PFM can use either a round ended or flat ended, as long as the finish line angle approaches 90 degrees and the axial depth at the margin is 1-1-2 mm.
Hello dear Dr.Stevenson,
could you please make an amalgam restoration guide for class 2 cavity MO...
Cause I've made 3 restorations for that cavity during past 2 days and it all fails due to a fracture in the proximal area and exactly distolingual part, I'm not sure why it keeps breaking there although I've made enough condensation and I was trying to be as gentle as possible during carving and pre/post burnishing and by the way I'm still a student.
Please help me with that, I would really really appreciate it.
*All the love for the great work you're doing to help people in your channel
Always look at the marginal ridge area prior to prepping and check with articulating paper. Be mindful of the occlusion.
@@StevensonDentalSolutions ok, I will try to focus on that more and thank you so much doc, I'll try to make my next restoration a better one
Your videos are fantastic as is the advice and instruction
Thank you, Doctor! Very kind of you.
So good, but can u show us your movements ( right hand)?)
Okay - will do in an upcoming video - thank you!
@@StevensonDentalSolutions
Will be waiting as well 🙏🏻🔝🌟
Thank you ✨
Great
Hi Dr. Stevenson, how important is to use loupes for the CDCA exam. Any loupes you recommend that are good and not too expensive? And what magnification do u think is good for a first time user.
Thank you.
Very important - I'd go for 3.0 minimum - all are about the same in price - you'll need illumination as well.
Thank you!
do you use these the same techniques to prep clinically?
Yes
Hi Dr. Stevenson! Is Facial axial reduction 1.2 to 1.5mm for both FGC and PFM? or are they different? Thank you always for your guidance and teaching!
PFM = 1.5 - 1.7 mm
FGC = 1.0 -1.2 mm
(0.5 mm more than finish line depth)
Great - my pleasure!
Do you recommend leaving the wings on the #5-PFM abutment? I saw a previous PFM prep video of yours where you blended away the wings at the end so it was a smooth transition. What is the benefit to keeping the wings versus smoothing them away? Is either way (wings vs smoothing away the wings) an acceptable method for the board exam? Thank you for your video, very helpful!
Both are acceptable. Leaving them creates a potential draw challenge, as the vertical walls created adds an additional set of vectors to consider. Smoothing them away if slightly more aggressive to the tooth, but not by much.
checking with putty is essential
YES! Prep to the putty.
Why did you prepare plane C before plane B
Thanks in advance
Can do either way - but I had the chair position and finger rest set for the A and C planes fo I usually do it this way - ending up bringing the lingual cusp tip back in line with the arch. Anyway is fine.
Thank you very much
My pleasure
Can we do waterless in case of vital tooth preparation?
With care, and light pressure and air spray, this may be done, but it would be considered a more advanced technique...
@@StevensonDentalSolutions Thanks a lot for your valuable information
Great videos
Thank you for sharing.
Where can I buy the RGS probes?
Thanks a lot 😊😊😊
stevensondentalsolutions.com
Stevenson Dental Solutions thank you
@@yu-chengchu6061 You got it!
Do you have any RPD videos?
We have a comprehensive design series on our website for downloading - it's great, but nothing on UA-cam.
Does anyone know if you fail the ceramic, but not the bridge, must you repeat all 3 teeth? or just #9?
All three - the Pros section must be passed in it's entirety.
@@StevensonDentalSolutions Do you have a video for #9? Failed my boards last week b/c of it :(
@@BrainwashedZombie Yes , check out our library under all ceramic preps - you'll make it next time!
@@StevensonDentalSolutions thanks, yes, I failed b/c my margin was less than .5mm on the ceramic. will def be practicing all week before!
@@BrainwashedZombie Great!
how to polish my prparation dr? same tools as for composite?
Use fine diamonds (red stripe) in friction grip slow speed attachment. Then use a Jiffy cup to create a smooth surface. Don’t try to create a high polish. We have these in our store.
@@StevensonDentalSolutions thanks dr but why u don't recommend composite polishers like kinda polishing system for polish the prep tooth?
Super sir
Thank you!
I enjoyed your lesson! although I would have a question, what is line pf draw? what does draw mean? axial inclination of the abutment coronally? thank you
The path of insertion - or the mean vector of the total occlusal convergence of the axial walls.
sir please make videos on patients asap!!!!!!!!!
I've got a series done, coming out by the end of March. These take more time than bench videos, plus all kinds of issues, time in the chair, patient consents, etc.
yeah you are right , i am waiting with insane curiosity.
@@girish7914 Coming!
@@StevensonDentalSolutions great! thank you sir
@@girish7914 My pleasure
the besttttttt
Thank you! Dr. S
Hi Dr.Stevenson,
In this particular video, you have created secondary planes on both the facial and the lingual walls while in the other videos secondary planes are created on the lingual wall of upper molar/premolars and facial walls of lower molar/premolar and not both the walls. Can you please explain the reason?
I was asking this, and I got an answer: secondary planes are made on lingual of upper and facial of lower. That's the basic.
But if you notice the original contours of the facial of the upper, you will notice that they are on 2 planes. So it's better to make them on 2 planes too. (So, all the facial and lingual of posteriors are on 2 planes except the lingual of lower).
Hope that was helpful.
@@omargad7494 thankyou so much..yeah makes sense
4:39 is it A plane or C plane doc ?
C plane - my error - thank you.
Thank you 🙏 😊
I thought it was A plane. Why's it C?
Hello doctor RGS. I have a question. Is it really good idea to put bridge on premolar and molar? I was taught in school that molars and canines are 1st class pillars and premolars are 2nd class pillars. And that two premolars together create 1st class pillar. And a bridge should always be on 1st class pillars on both ends. Shouldnt the bridge be extended to the canine then?
No bridge is better than an implant. There are no clinical studies to validate your dental schooling regarding fixed dental prostheses - only theories.
Thank you for your question.
👍👍👍