Seeing these basic videos makes us feel that these batch of students are lucky to have visual media based guidance to know as well as to prepare for exams unlike us who had to rely solely on 2 D images in text books apart from preclinical demos . All have you to thank for making it happen !
I’m old school Russian dentist who try to challenge board exams in Canada.And your explanations are amazing.Hope after watching your videos I can pass my clinical skills exam.Thank you for your help.
That’s amazing! 🎉🎉 Your excitement is contagious, and it sounds like you're preparing with the perfect mix of dedication and passion. I'm getting back to the basics to deal with my first patient after half moth ❤ , your fan from Jordan. 🇯🇴
I hope to make such a smooth preparation one day. Currently learning this in school and oh boy you should see what some of my peers and I are producing hahaha. I've watched this a few times, roughly twice before each preparation I do. It's amazing how each time I'm improving based on what extra details I pick up from your video. Honestly your content is GOLD.
Thank you! I was struggling with this prep on # 30 today (we only had a powerpoint in our school), watching you use the hand instruments the proper way and visualizing it with your drawings definitely helps paint a definitive picture of how this prep should be performed.
Thank you very much Dr. Stevenson. I am in first year of dentistry now and your video taught me a lot. The picture was always sharp, the pacing was just right and the part where you drew on iPad was very good for understanding. Good job. I missed the preparation of the S curves though, I would like to see that as well.
@@StevensonDentalSolutions No sir I don't recall ; glad to know you have students here, If you dont mind May I ask you which college is she from maybe that way I might end up being sure about it. Regards.
Thank you Dr Steven! Brilliant work, I am a fan. Please if you can also make video for amalgam cusp built up with MOD. That would be so helpful for the exams I am undertaking. Regards.
Thank you so much for sharing the knowledge and the technique with us doctor! I wish you could also demonstrate a 3/4 mandibular canine preparation for a posterior bridge :)
Thanks so much Dr Stevenson for this amazing demo of Class 2 amalgam prep, which is a nightmare for many dental students including me. I have one question though, I have been preparing MOD prep and noticed that distobuccal cusp is getting very small after the final preparation coz of extension of proximal box buccally to get enough clearence. I was just wondering is this acceptable or is there any method for distobuccal cusp preservation in order to prevent over reduction of that particular cusp? I hope you got my query, thanks for reading and I will be waiting for your response. Thanks and Regards.
Pleasee make the indonesian subtitle DR. Stevenson. I am your fan from indonesia. I enjoy your video but i don't really understand what do you say. You make the greatest video of dentistry while i watched.
Great videos as usual. I see you have alot of requests, my wishlist contains a porcelain veneer prep because there are different variations in the literature. Really appreciate it. Thank you so much
Hey Dr. Stevenson, I love your videos and was wondering, as a fellow microscope user, if you would do some instructional microscope videos? Thank you for sharing your great technique!
Thanks doc this is a super helpful video! I’m just starting preps in school but we were never fully taught what exactly is a box, and what “dropping the box” means, would you be able to explain?
Yes, dropping the box means to remove the proximal tooth structure from the occlusal aspect, moving gingivally, hence "dropping" the box. Actually a better way of saying this would be to create the proximal box...
Hello Dr, I appreciate your videos. I am curious, how wide is that gingival floor of the box mesial distally? My school requires it to be 1.25 mm but I always find mine is more like 1.5 by the time I get the 245 in there. Thank you!
1.25 mm. Use the 245 closer to the adjacent tooth and be mindful of its position at all times. You'll get there! Use the secondary cutting edge of a sharp enamel hatchet when finishing the axial wall to control the axial depth.
Hi Doc, your content is saving my life in dental school. Thank you for putting out amazing content. A quick question. I recently started practicing for Class II Amalgam #30 MO and I've been having trouble gaining a proper vision on the mesial and gingival floor when I'm dropping the proximal box. I'm used to operating at 7 or 8'o cock position when I work on #30, but I was just curious what would be an ideal chair position when dropping the box for class II #30 MO. Same question with a #19 MO as well. Thank you.
Class II boxes on mandibular teeth are always more challenging than maxillary teeth. 7-8 O'clock is good for bur orientation, line of draw, mesial distal tipping, buccal lingual tipping but poor for visualizing the boxes. Try the 12 O'clock position for direct vision - it works most of the time, and have the patient lean towards you. Ultimately, the mandibular class II box approach will be a combination of different chair positions and the concept (albeit uncomfortable at first) of "cut a little, look a little", repeated numerous times. As you gain a subconscious awareness of your bur in 3D space through much practice (will take 100s of preps), and remembering the importance of bur orientation and finger rest, you can do less looking and more "blind" cutting. Some things in dentistry are very easy and some things are very hard - it's just the way it is...so, when you encounter a difficult prep, say to yourself, "okay, this is tough, it will take longer, be patient..." Best to you!
@@StevensonDentalSolutions Hello Doc, thank you so much for your thoroughly reply. Thanks to your advice, I've been trying different operating positions for dropping the proximal box on #30. A quick follow up question though. When I'm dropping the proximal box at a 12'o clock position, I noticed that I've been having lots of trouble with seeing the depth of cut I'm backing since it's a bird-eye view. In another words, it's hard to see how deep I'm going in with a bur. I'm not sure if I'm doing something wrong here, or if it just takes practice. I would appreciate your words of wisdom once again! Thank you.
Any tips on how to avoid trauma to the gingiva using the hatchet? Mine keeps slipping and I'm practicing on a model but it would hurt if it was a real patient
Keep a stable finger rest and make sure that the hatchet is very sharp. We recommend sharpening them after each prep. Also, take very small "bites" with the hatchet...less force and easier to control. And finally, remember that we define with the bur (95% of the prep) and refine with the hand instruments (only 5% of the prep). Best to you and Happy New Year, Dr. S
This video is so helpful! Thank you for sharing. Do you have any suggestions for other burs we could use to create the S curves if we do not have a 330RGS?
thanks .. very helpful. I might have missed a thing or two on retention. You didnt stress much on importance of making retentions on the preparations. How useful ( or not ) would you say they are?
As long as the major retention aspects are present: occlusal convergence, proximal convergence and occlusal locks, most amalgam restorations have ample retention. If the size of the box is large, additional retention may help via the use of axioproximal grooves.
Thank you for this amazing video. Can you please show us HOW TO POLISH AND FINISH A BEUTIFUL COMPOSITE RESTORATION with a video full of tips. And i really want to see the COMPOSITE VENEER RESTORATION video from you.
The last time I was at the dentist I was listening to them complain about how they couldn't figure out the codes? Idk I just felt bad because of all the cavities in between my teeth :))
Yes, for sure - just requires attention to the bur position to avoid damaging the adjacent tooth. THe result will not have sharp internal line angles, but this probably won't be an issue unless it's an exam situation.
Thank you so much for this wonderful video Dr Stevenson. I have a question and concern about using the enamel hatchet. So, when we chip the little bird peak according to your description, down to the gingival wall, wouldn’t that create a sharp angle between the gingival and the axial, buccal or lingual wall of the box? And how to avoid this? Thank you
Hi Doc - not really - creating a sharp line angle takes effort and requires forming it by sliding the hatchet into the proximogingival area across the gingival as well - simply removing the lip isn't enough, therefore it won't be an issue. The rounded line angle created by the 245 and refined by the 330RGS will remain as is, but if it seems too sharp, it's easy to correct with the bur.
It's not called a seat, it's named the gingival wall. The buccolingual width is determined by the need for proximal clearance, hence has no constant measurement. The mesiodistal "width" is referred to as the axial depth, and this will be 0.5 mm minimum into dentin, or about 1.25-1.5 mm deep from the gingival cavosurafce margin.
I love your videos. I have a question. What would you do if you need prep Amalgam on the same tooth but it’s DO instead? I have a Columbia typodon as well but the distal cusp is really small. I think if I do mine S shape. I will take most of the distal buccal cusp away. How would you do this type of prep? Is there any restrictions for this type of prep where you don’t follow the rules...!? Thank you so much in advance for your help
Forget the DB groove at first - simply prepare the class 2. Then assess the DB groove - if it is more than 0.5 mm away from the buccal proximal wall, leave it, and you're done. If, however, the groove is closer than 0.5 mm from your buccal proximal wall you have two choices: 1. Simply widen your box buccal to include it, or 2. Cap what remains of the Distal cusp FLAT to the pulpal but don't touch the proximal box from the gingival to the pulpal - it's like a mini-cusp capping procedure.
Stevenson Dental Solutions. Thank you so much for responding so fast. I really appreciate it. I ordered some of the burs that you were suggesting and an instrument as well. If at one point you make a video of this type of prep. I’ll be paying attention to it. Thx a lot for all your help
oh so preferably, a diamond pear shaped bur which is around 3.5mm would be better, it is what we use at university in UK but i’m considering experimenting with some of your burs
I am trying to find a #19 DO class II amalgam cavity prep which would be really helpful as it is a clinical competency at university, I wouldn’t mind paying for a tutorial or something, just some help would be greatly appreciated for a LL6!
Hi Dr. So the buccal wall of the proximal wall should converge toward the occlusal right? i am confused about the lingual wall.Should it not converge at all towards the occlusal? Should it be completely straight parallel to the external lingual surface of the tooth? Because whenever i start preparing the priximal box, both lingual and proximal walls converge no matter how hard I try to not converge the lingual wall. My other question: For the proximal box of all molars and premolars is the same pattern to be followed : buccal wall convergent and lingual wall straight?
The lingual wall (or the non-functional cusp wall) is orthogonal to the gingival. This will require a slight tip of a 245 but towards the lingual to compensate for the convergent pear shape.
recommend dental doc in nc??? They are hard to find, none can touch you. They dont care. im left w/crowns (upper only) and few implants (l have 4). My lower is good.
Hey Dr. Stevenson, I'm sure you want us to buy the 330RGS bur (maybe once I'm not a broke student anymore) but what bur would you recommend to use to refine everything without it? I've tried 330 in slow speed and it rounds the gingival too much but can work. 245 same thing. A 55/56 also works but sometimes is too aggressive. 169 is too pointy (too tapered) and ends up messing up my pulpal floor. I've used a 34 and that sometimes works but sometimes is too convergent and messes up my internal walls. Basically I can understand why you made the 330RGS, but not sure if you have another technique?
This is the space from the cavosurface margin to the adjacent tooth. It should be ideally 0.3-0.5 mm on the buccal and lingual walls and at least 0.5 mm along the gingival wall. To obtain this clearance, the walls will need to be undermined at first and then corrected with either a bur (difficult to do without over-extending or damaging the adjacent tooth) or with the use of a sharp hand instrument, namely an enamel hatchet. The undermined "lip" of tooth is cleaved off in such a way as to provide an exit angle that creates a 90-degree angle of the wall created with the unprepared tooth structure.
@@StevensonDentalSolutions i cant use enamel hatchet to obtain the clerence thats why can u pls show a separate video on enamel hatchet using cletence giving
@@anurupamukhopadhyay4818 Okay - then you must use a very skinny bur like a 168 or 169 and extend further than 0.5 mm - there is no other way, UNLESS you use a wedge and matrix band to protect the adjacent tooth.
@@StevensonDentalSolutions If i use wedge then ...use the tapper fissure bar as in our clg we use the contra angle handoeice with diamond shaped bar the the typhidont very hard that's why the enamel hatchet does not cut by myself as it is not so brittle,,that's why use a wedge then use a taper fissure bar to cut that portion and create the gingival clerence or should I use gmt to cut the portion by smoothing type..
thank you for your reply.that doesn't matter.cause I'm not dental student .I just like to make amalgam tooth model for an object.I also have mercury ball pendant called rasamani made by herbal process.It was metal but smelled like leak.interesting.
It's not a particular requirement but it's usually about 1.5 mm tall on the Acadental Tooth. It depends mostly on the gingival extension required to break contact and remove caries...
Doc, this is literally one of the mist beautiful preps I have ever seen.
👍🤝
Seeing these basic videos makes us feel that these batch of students are lucky to have visual media based guidance to know as well as to prepare for exams unlike us who had to rely solely on 2 D images in text books apart from preclinical demos . All have you to thank for making it happen !
So true, thank you Doc.
May your 1nn buccal extenson serve you well
@@StevensonDentalSolutionsء😅😊ء١ءيؤض١ث١١١١١١١١١١١١١١١١١١١1١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١١شث١ششش١1شششث١ق١١ش١١يصيي١ي١يضقضيضثضي١يضيضقي١شيق١ض١1😅1١1١١1ش١ش😅
جججججش
I’m old school Russian dentist who try to challenge board exams in Canada.And your explanations are amazing.Hope after watching your videos I can pass my clinical skills exam.Thank you for your help.
Thank you! Best wishes.
Good luck doc, it is really tough. My exam is within a month 😊
did you clear your exams?
@@jaydipkapuriya still waiting for result.I will update after release of result
@@monaabdelmotelb8005 how was your exam?did you pass?
That’s amazing! 🎉🎉 Your excitement is contagious, and it sounds like you're preparing with the perfect mix of dedication and passion. I'm getting back to the basics to deal with my first patient after half moth ❤ , your fan from Jordan. 🇯🇴
Thank you Doc! Hope to meet you one day. Best, Dr. S
I hope to make such a smooth preparation one day. Currently learning this in school and oh boy you should see what some of my peers and I are producing hahaha.
I've watched this a few times, roughly twice before each preparation I do. It's amazing how each time I'm improving based on what extra details I pick up from your video. Honestly your content is GOLD.
Thank you! Wishing you the best in Dental School and beyond!
Thank you! I was struggling with this prep on # 30 today (we only had a powerpoint in our school), watching you use the hand instruments the proper way and visualizing it with your drawings definitely helps paint a definitive picture of how this prep should be performed.
Awesome! Thank you.
Hi, Dr. Stenvenson. I am Xu, one of USC interviewee. I am a big fan of you! Perfect video, I learn a lot from them. Thanks so much!
Thank you!
Amazing!
The technics, terminology and the explanation!
Thank you!
Your video is helping so many dental students preparing for the national exam in Korea.
I am so happy to read this! Best wishes, Dr. Stevenson
Can't thank you enough for these amazing preparation videos 🌷
My sincere pleasure!
Nice, I was fortunate to meet Dr Warren Johnson and observe some of his his gold foil restorations.
Thank you very much Dr. Stevenson. I am in first year of dentistry now and your video taught me a lot. The picture was always sharp, the pacing was just right and the part where you drew on iPad was very good for understanding. Good job. I missed the preparation of the S curves though, I would like to see that as well.
By far the most detailed and fantastic video explaining the whole thing... Thank you
Thank you Dr. Bhattacharyya - btw do you know Urmi Bhattacharyya? She is my grad student from Bengal...
@@StevensonDentalSolutions No sir I don't recall ; glad to know you have students here, If you dont mind May I ask you which college is she from maybe that way I might end up being sure about it.
Regards.
@@vishnubhattacharyya8885 Manipal
@@StevensonDentalSolutions Sorry Sir I don't know her Now I am sure of it
Thanks for posting the video
-Regards.
Amazing technique and thanks for sharing Dr. Stevenson.
My pleaseure!
This is beautiful! Thank you so much for sharing
Thank you Doctor
Thank you Dr Steven! Brilliant work, I am a fan. Please if you can also make video for amalgam cusp built up with MOD. That would be so helpful for the exams I am undertaking.
Regards.
I've heard that this is a popular assignment. I'll try my best.
Thank you for sharing this video Dr Stevenson. Very helpful.
Thank you, Doc!
You're a life saver!
So cool to have you say this! Keep up the pursuit!
Thank you dr Stevenson for such a wonderfully explained video! Beautiful preparation!!! Could you please make videos on 700 series?
Will try in the near future - thank you!
Thank you very much
Thank you very much. Excellently explained. Can not be taught any better. Thank you very much.
Thank you!
Phenomenal!
“Perhaps it’s not a perfect preparation” 🤣🤣🤣
thank u so much i couldnt understand the S until i watched ur video
Awesome!
Woah game changer! Practice tomorrow will be fun 🙌
So nice to receive this comment! Wishing you the best.
Thank you for the video it was very helpful
A pleasure - best wishes, Dr. S
@19:28 Sir! It is the perfect preparation ngl
thank you - very kind.
Thank you so much for sharing the knowledge and the technique with us doctor! I wish you could also demonstrate a 3/4 mandibular canine preparation for a posterior bridge :)
OOH! Good one - will do! Two choices - pin ledge or grooves? Gold right?
@@StevensonDentalSolutions It is the grooves ! Yes it is gold :) Thank you so much in advance ! So excited about it and can't wait for it !!!
Great video, Helped me a lot 👍. keep making these types of videos
Will do - more to come soon!
best class ıı video on youtube
Thank you!
Wow, thank you very much 🫶🏼
My pleasure!!!
I m big from korea thx s2s2
Thanks so much Dr Stevenson for this amazing demo of Class 2 amalgam prep, which is a nightmare for many dental students including me.
I have one question though, I have been preparing MOD prep and noticed that distobuccal cusp is getting very small after the final preparation coz of extension of proximal box buccally to get enough clearence. I was just wondering is this acceptable or is there any method for distobuccal cusp preservation in order to prevent over reduction of that particular cusp?
I hope you got my query, thanks for reading and I will be waiting for your response.
Thanks and Regards.
This is a very nice video and detailed prepararion
Thanks alot
Thank you Doc!
Can u plz share further classes preps
Thank you very much🙏🏻it was extremely helpful🌸
Great! Thank you for watching.
It was very helpful dr. Thank you 😊
Very nive presentation, Thank you so much
My Pleasure!
Thank uuu.
Thanks it was a great video!
Thank you Doc
That drawing of S curve is brilliant
Excellent work sir. Very beautifully explained 💯💯
Thank you!
I like the shape of your cavity , nicely done 👍
Thank you
It came out perfect good job👍🏾
Thank you Doctor
This is perfectly perfect ♥️♥️
thak you for this beautiful video!!1
i think one can learn a bit more from this , than watching some of those ones that go for a few minutes with music playing
Thank you, and consider the source of the video too for accuracy and adherence to operative technique...
thanks doctor
My pleasure!
@@StevensonDentalSolutions
Your follower
from Syria
❤️🌷
Thank you doc very good
love it !!
Beautiful preparation ❤
Thank you for watching! Dr. S
This is beautiful
Estupendas preparaciones dentales saludos desde Chile
Gracias!
Wow
Glad you enjoyed it, Dr. S
Pleasee make the indonesian subtitle DR. Stevenson. I am your fan from indonesia. I enjoy your video but i don't really understand what do you say.
You make the greatest video of dentistry while i watched.
Okay, you got it!
Outstanding so informative
Thank you Doctor.
amazing! art.
Thank you!
Great videos as usual. I see you have alot of requests, my wishlist contains a porcelain veneer prep because there are different variations in the literature. Really appreciate it. Thank you so much
Yes - at least 5 different prep designs for different indications and pre-op conditions.
Indeed and the relatively recent change regarding the finish on the incisal surface ie with bevel or without etc
thanks doc
Great this is helpful!
So glad!
Hey Dr. Stevenson, I love your videos and was wondering, as a fellow microscope user, if you would do some instructional microscope videos? Thank you for sharing your great technique!
Will do - stand by!
amazing!
Glad you enjoyed it.
amazing!!!!
Thank you!
Thank you 😍👍🏻👍🏻👍🏻👍🏻
Thanks!
Greatt thank you 🤍
Cool - my pleasure! Dr. S
Thanks doc this is a super helpful video! I’m just starting preps in school but we were never fully taught what exactly is a box, and what “dropping the box” means, would you be able to explain?
Yes, dropping the box means to remove the proximal tooth structure from the occlusal aspect, moving gingivally, hence "dropping" the box. Actually a better way of saying this would be to create the proximal box...
Hello Dr, I appreciate your videos. I am curious, how wide is that gingival floor of the box mesial distally? My school requires it to be 1.25 mm but I always find mine is more like 1.5 by the time I get the 245 in there. Thank you!
1.25 mm. Use the 245 closer to the adjacent tooth and be mindful of its position at all times. You'll get there! Use the secondary cutting edge of a sharp enamel hatchet when finishing the axial wall to control the axial depth.
Thnx for lovely vedios...plz make one Vedio on details of instruments Nd uses 🙏🤓
I will! Thank you
Hi Doc, your content is saving my life in dental school. Thank you for putting out amazing content. A quick question. I recently started practicing for Class II Amalgam #30 MO and I've been having trouble gaining a proper vision on the mesial and gingival floor when I'm dropping the proximal box. I'm used to operating at 7 or 8'o cock position when I work on #30, but I was just curious what would be an ideal chair position when dropping the box for class II #30 MO. Same question with a #19 MO as well. Thank you.
Class II boxes on mandibular teeth are always more challenging than maxillary teeth. 7-8 O'clock is good for bur orientation, line of draw, mesial distal tipping, buccal lingual tipping but poor for visualizing the boxes. Try the 12 O'clock position for direct vision - it works most of the time, and have the patient lean towards you. Ultimately, the mandibular class II box approach will be a combination of different chair positions and the concept (albeit uncomfortable at first) of "cut a little, look a little", repeated numerous times. As you gain a subconscious awareness of your bur in 3D space through much practice (will take 100s of preps), and remembering the importance of bur orientation and finger rest, you can do less looking and more "blind" cutting. Some things in dentistry are very easy and some things are very hard - it's just the way it is...so, when you encounter a difficult prep, say to yourself, "okay, this is tough, it will take longer, be patient..." Best to you!
@@StevensonDentalSolutions Hello Doc, thank you so much for your thoroughly reply. Thanks to your advice, I've been trying different operating positions for dropping the proximal box on #30. A quick follow up question though. When I'm dropping the proximal box at a 12'o clock position, I noticed that I've been having lots of trouble with seeing the depth of cut I'm backing since it's a bird-eye view. In another words, it's hard to see how deep I'm going in with a bur. I'm not sure if I'm doing something wrong here, or if it just takes practice. I would appreciate your words of wisdom once again! Thank you.
damn you are a legend
Thank you Doctor - appreciate the support!
shoutout sa akong mga classmate diha nga ga tan-aw ani HAHAHAHAHAH
Any tips on how to avoid trauma to the gingiva using the hatchet?
Mine keeps slipping and I'm practicing on a model but it would hurt if it was a real patient
Keep a stable finger rest and make sure that the hatchet is very sharp. We recommend sharpening them after each prep. Also, take very small "bites" with the hatchet...less force and easier to control. And finally, remember that we define with the bur (95% of the prep) and refine with the hand instruments (only 5% of the prep). Best to you and Happy New Year, Dr. S
Thank you so much!!
Thank you for this knowledge ♥️
My pleasure, Doctor
This video is so helpful! Thank you for sharing. Do you have any suggestions for other burs we could use to create the S curves if we do not have a 330RGS?
Great
Thank you!
thanks .. very helpful. I might have missed a thing or two on retention. You didnt stress much on importance of making retentions on the preparations. How useful ( or not ) would you say they are?
As long as the major retention aspects are present: occlusal convergence, proximal convergence and occlusal locks, most amalgam restorations have ample retention. If the size of the box is large, additional retention may help via the use of axioproximal grooves.
Hi Dr. Stevenson! How often should we replace the 330 RGS?
After 2-3 preps
Can you please make a video how to do Mo class 2 composite without using hand instruments!
Sure - I did one yesterday in my course.
Can you please post it in UA-cam?
Please my exam is next week! I need you help
Thank you for this amazing video. Can you please show us HOW TO POLISH AND FINISH A BEUTIFUL COMPOSITE RESTORATION with a video full of tips. And i really want to see the COMPOSITE VENEER RESTORATION video from you.
Will do - great idea, thank you.
Where can I find the instruments the make the measures?
stevensondentalsolutions.com or on eBay search for RGS instruments
I wish someone can tell me what dose the dental hygienist do ?
Great videos! Do you happen to have any class II composite prep videos for molars? Specifically a mandíbular first molar? Thank you
I have a maxillary Molar. Take a look at my video library on my channel.
Thank you very much Dr.Stevenson . Can you share us please a video for underfilling MOD Amalgam with Harvard? .
Not sure what you mean by under-filling and Harvard? Do you mean liner/base?
@@StevensonDentalSolutions yes exactly , Harvard it is a Zinc phosphate cement.
We aren't using ZP cement much in the US anymore - there are better options, (GI, RMGI) - I have liner and base videos posted.
@@StevensonDentalSolutions here also in Germany for patients but i muss do it for the exams. MOD amalgam with ZP cement. But thanks anyway 👍
@@ramidarwish7214 Okay - I understand. Wishing you the best.
When I'm using airotar with water splash I'm not getting this accuracy
What to do doc?
Switch to slow speed to refine with no water, only air.
@@StevensonDentalSolutions thanks doc
Please we need amalgam preparation MOD for upper and lower 5,6 and 7
good suggestions!
@@StevensonDentalSolutions Thank you so much Dr🙏
nice video
Thank you for watching!
The last time I was at the dentist I was listening to them complain about how they couldn't figure out the codes? Idk
I just felt bad because of all the cavities in between my teeth :))
thanks! can u shape the appromximal box without the 10714 instrument?
Yes, for sure - just requires attention to the bur position to avoid damaging the adjacent tooth. THe result will not have sharp internal line angles, but this probably won't be an issue unless it's an exam situation.
Thank you so much for this wonderful video Dr Stevenson.
I have a question and concern about using the enamel hatchet. So, when we chip the little bird peak according to your description, down to the gingival wall, wouldn’t that create a sharp angle between the gingival and the axial, buccal or lingual wall of the box? And how to avoid this?
Thank you
Hi Doc - not really - creating a sharp line angle takes effort and requires forming it by sliding the hatchet into the proximogingival area across the gingival as well - simply removing the lip isn't enough, therefore it won't be an issue. The rounded line angle created by the 245 and refined by the 330RGS will remain as is, but if it seems too sharp, it's easy to correct with the bur.
So lovely, Thank you Dr Stevenson , I really appreciate it.
Thank you
Can anyone please tell the width of the gingival seat??
It's not called a seat, it's named the gingival wall. The buccolingual width is determined by the need for proximal clearance, hence has no constant measurement. The mesiodistal "width" is referred to as the axial depth, and this will be 0.5 mm minimum into dentin, or about 1.25-1.5 mm deep from the gingival cavosurafce margin.
I love your videos. I have a question. What would you do if you need prep Amalgam on the same tooth but it’s DO instead? I have a Columbia typodon as well but the distal cusp is really small. I think if I do mine S shape. I will take most of the distal buccal cusp away. How would you do this type of prep? Is there any restrictions for this type of prep where you don’t follow the rules...!? Thank you so much in advance for your help
Forget the DB groove at first - simply prepare the class 2. Then assess the DB groove - if it is more than 0.5 mm away from the buccal proximal wall, leave it, and you're done. If, however, the groove is closer than 0.5 mm from your buccal proximal wall you have two choices: 1. Simply widen your box buccal to include it, or 2. Cap what remains of the Distal cusp FLAT to the pulpal but don't touch the proximal box from the gingival to the pulpal - it's like a mini-cusp capping procedure.
Stevenson Dental Solutions. Thank you so much for responding so fast. I really appreciate it. I ordered some of the burs that you were suggesting and an instrument as well.
If at one point you make a video of this type of prep. I’ll be paying attention to it. Thx a lot for all your help
Would a pear shaped bur be better, for doing the box?
a diamond one?
As long as it is long enough and flat ended...this bur doesn't exist at this time.
oh so preferably, a diamond pear shaped bur which is around 3.5mm would be better, it is what we use at university in UK but i’m considering experimenting with some of your burs
I am trying to find a #19 DO class II amalgam cavity prep which would be really helpful as it is a clinical competency at university, I wouldn’t mind paying for a tutorial or something, just some help would be greatly appreciated for a LL6!
Are you able to do a video on complex amalgam and/or composite veneer?
Yes, will do!
Complex amalgam part 1 and 2 are up on UA-cam.
Hi Dr.
So the buccal wall of the proximal wall should converge toward the occlusal right? i am confused about the lingual wall.Should it not converge at all towards the occlusal? Should it be completely straight parallel to the external lingual surface of the tooth? Because whenever i start preparing the priximal box, both lingual and proximal walls converge no matter how hard I try to not converge the lingual wall.
My other question:
For the proximal box of all molars and premolars is the same pattern to be followed : buccal wall convergent and lingual wall straight?
The lingual wall (or the non-functional cusp wall) is orthogonal to the gingival. This will require a slight tip of a 245 but towards the lingual to compensate for the convergent pear shape.
Can I use this technique in Patients tooth...
What is the purpose of the 90 degree exit angle?
Amalgam requires 90 degrees for maximal strength and enamel must not be undermined.
recommend dental doc in nc??? They are hard to find, none can touch you. They dont care. im left w/crowns (upper only) and few implants (l have 4). My lower is good.
Dr. Joel Wagoner - the best of the best.
Is it micromotor ur using
Highspeed with turbine
Hey Dr. Stevenson,
I'm sure you want us to buy the 330RGS bur (maybe once I'm not a broke student anymore) but what bur would you recommend to use to refine everything without it? I've tried 330 in slow speed and it rounds the gingival too much but can work. 245 same thing. A 55/56 also works but sometimes is too aggressive. 169 is too pointy (too tapered) and ends up messing up my pulpal floor. I've used a 34 and that sometimes works but sometimes is too convergent and messes up my internal walls. Basically I can understand why you made the 330RGS, but not sure if you have another technique?
Take the 245 and flatten the bottom with a diamond bur. Presto - RGS 330 hack.
@@StevensonDentalSolutions thanks!
How u give the clearence can u pls ans it I can't understand it clearly
This is the space from the cavosurface margin to the adjacent tooth. It should be ideally 0.3-0.5 mm on the buccal and lingual walls and at least 0.5 mm along the gingival wall. To obtain this clearance, the walls will need to be undermined at first and then corrected with either a bur (difficult to do without over-extending or damaging the adjacent tooth) or with the use of a sharp hand instrument, namely an enamel hatchet. The undermined "lip" of tooth is cleaved off in such a way as to provide an exit angle that creates a 90-degree angle of the wall created with the unprepared tooth structure.
@@StevensonDentalSolutions i cant use enamel hatchet to obtain the clerence thats why can u pls show a separate video on enamel hatchet using cletence giving
@@anurupamukhopadhyay4818 Okay - then you must use a very skinny bur like a 168 or 169 and extend further than 0.5 mm - there is no other way, UNLESS you use a wedge and matrix band to protect the adjacent tooth.
@@StevensonDentalSolutions If i use wedge then ...use the tapper fissure bar as in our clg we use the contra angle handoeice with diamond shaped bar the the typhidont very hard that's why the enamel hatchet does not cut by myself as it is not so brittle,,that's why use a wedge then use a taper fissure bar to cut that portion and create the gingival clerence or should I use gmt to cut the portion by smoothing type..
can the cheap typodont sold at ebay for about 8dollar be used for amalgam filling practice?columbia type is expensive.
Yes, but not for the exams in the US
thank you for your reply.that doesn't matter.cause I'm not dental student .I just like to make amalgam tooth model for an object.I also have mercury ball pendant called rasamani made by herbal process.It was metal but smelled like leak.interesting.
How much should the length of the axial wall be?
It's not a particular requirement but it's usually about 1.5 mm tall on the Acadental Tooth. It depends mostly on the gingival extension required to break contact and remove caries...