CLASS III Preparation for Composite #8 ML
ฝัง
- เผยแพร่เมื่อ 8 ก.ค. 2024
- In this short video, Dr. Stevenson reviews the basic technique for preparing the class III cavity for composite.
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CLASS III Preparation for Composite #8 ML
#StevensonDentalSolutions #compositepreparation #class3
Thanks for watching! - ภาพยนตร์และแอนิเมชัน
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Better education than my dental school, thanks doc
Thank you - stay tuned - much more coming!
True😂
so sad but so true 🙏🏽
Very neat work Dr Stevenson!! Always a fan!
hi Mr. Stevenson, your restorative videos are great! thanks from Turkey
This just made my life as a dentistry student 1000 times better. Thank you.
So great to receive this message! Thank you.
Thank you doc,the best dental tutorials on TH-cam are provided by this channel❤️
Awesome! Thank you
Excellent tips for licensure! Thanks!!
never feel comfident with my preparation before watching this video, thank you for the education Dr. stevenson
Thank you! Best wishes
Such an owesome demonstration . I enjoyed a lot and learned many technical tips.
Great! Thank you for watching.
Loved this! Super informative for my next skills assessment. Thank you Dr. Stevenson!
Yes! My pleasure!
master of dentistry Dr. Stevenson
Some confusion with a few viewers: "The point of bur entry is within the incisogingival dimension of the carious lesion or defective restoration and as close the the adjacent tooth as possible without contacting it. Direct the bur PERPENDICULAR (90 degrees) to the enamel surface..." Sturdevant, "The Art and Science of Operative Dentistry" Angling the bur at a 45 degree angle undermines the incisal enamel.
One more thing: For an MF (facial approach) the bur is initiated at a 45 degree angle and the facial enamel is left undermined, but this works because the facial surface isn't under function. This is done primarily for esthetic reasons.
Great video Dr. Stevenson. Very comprehensive and informative. Thanks for sharing.
Thanks again!
Your restorative videos are the best! Do you have any videos on complex composites or amalgams?
Awesome video. Thanks doc!
Love everything about this video. Thank you!
Thank you.
Wonderfully demonstrated & explained!
Thank you!
You make it look easily. Loved it
Thank you - all the best, Dr. S
Thank you for this great effort ♥🌹
that box looks perfect
Oh, thank you
Hi Dr. Stevenson, we were taught that gingival clearance needs to be .5mm since that’s what the CDCA requirements are. I’m not sure what the other licensures requirements are though. Also thank you for this video. It was truly helpful.
Thank you Dr!
My Pleasure!
So clear. Brilliant. Where have you been all my dental school days?
Thank you! Best wishes, Dr. S
Excellent explanation!
Thank you - glad you liked it!
Excellent. Thank you
Great thank you for viewing.
Perfection✨
Thank you so much
Always happy to help!
Totally amazing! :)
Thank you Doctor!
Thanks doctor
My pleasure!
Thanks Dr
Thanks a lot
Thanks doc you are amazing
Thank you Doctor!
Love this
Thank you!
thanks doc
Thank you for videos
My peasure!
Thank you doc
My pleasure
Very good.
vielen Dank für perfekte erklärung.
You are welcome!
Thanks alot....
Thanks!
My pleasure Doc!
Thanks so much🌹🌹👍
You're welcome 😊
Thank you
My pleasure Doctor
Thanks doc very helpfull
Great! My pleasure
Thank you❤😍
My pleasure!
Class III restoration video would be amazing!
Love your videos and wish you were still here at UCLA!
Will do! Thank you
Great content. You should do a full series of preparations. I think the summary of instruments and sequence is a really nice idea - so much choice and little direction out there.
Thank you. Great idea. Stay tuned!
Thank you for all the great tutorials! Just curious if you'd be able to make a video on a class III DL prep on either #6 or #11? These specific preps are very challenging for me due to the morphology of the canines, especially because the distal contacts are so short on our Acadental typodonts.
Will do!
You are owsum Dr.S thanks for the video
Hello Dr. Will you please share a video showing composite restoration procedure in this Class III prep?
Hello Dr Stevenson, can you please provide a video for Class 4 composite restoration as well?? Thanks.
He has Class IV composites on this channel :) i know this comment is old but just in case !
Thank you sir for the best tutorials.please make videos on root canal treatment procedures as well.
We have so many requests - will try!
AWESOME DEMONSTRATION! Thank you so much for sharing your knowledge! It's so helpful to us dental students
What RPM did you set the electric motor while you did this demonstration without water?
It was done with an air driven handpick, but when we use electric I prep at full speed for the majority and then slow to 5,000 or sometimes less for refinement. Thank you
Hello Dr. Stevenson
Excellent demonstration! very informative and comprehensive
Can I request you to demonstrate a Class 4 composite cavity preparation?
Much appreciated!
you got it!
Thanks docter i get mor education in your vedio once again Thanks
Great - thank yøu for watching.
you are amazing
SO nice of you - thank you for watching.
perfect
Nice of you to say.
Thank you a lot
Can you please make video about endodontic access of simulated upper molar
We are planning a series on endo - coming soon - thank you!
our teacher just put us in the lab asking for a black 3 thank you so much for this video i have no idea what im doing😭
Could you please made demo about molar endo acess on endo translucent root ?
Thank you for your very informative videos. Could you please mention about the size of diamond burs if we need to use them?
Yes I can: the 330D is 2 mm long and 0.8 mm at the tip
Thanks very much for the brilliant explanation. Do we need to flare the incisl wall to follow enamel rods?
Slightly yes. Thank you.
I have my competency in an hour… I’m hoping I can get through for this 🙏
wishing you the best!
U r nailing it Dr... just..make some theoretical vidoes.restorative will be fun..
Thanks - will do!
Thanks a lot Dr Stevenson you are awesome.
I ahve question about Class 2 Composite Preparation. How to prepare it?
I will post new videos on this topic - thank you!
Hello can you explain how to take x-ray of teeth with protaber namod machien?!..thanks!
Great video as usual!
Would you open the incisal contact?
No - unless caries dictated this. Helps maintain the contact and since the access is great - no worries about composite sealing...
Very good . Pl do post a class 4 composite restoration vedio
Coming - half way done
What can we use to protect adjacent teeth and not affect visibility? Do u recommended use of 45 degree hand piece for distal?
Hi Dr. Stevenson! Great video just had a quick question. What about the bevel is supposed to be placed on the cavosurface margin of the preparation?
Bevels on the lingual of small class IIIs are no longer the standard taught in most dental schools. None of the national boards required them neither the WREB nor the ADEX. I have not been placing bevels for about 15 years. However when the class III preparation is large and extends onto the facial bevels are mandatory for retention and aesthetics.
We need class IV , V & VI cavity preparation please 🙏🏽🙃
Class V series coming soon! I have class IV in the video library.
Hi Doc
Can u do a finishing and polishing demonstration video
Will do
perfect work I have seen
ماشاء الله تبارك الله 🔵
Thank you Doctor!
Thank you so much,you are a great tutor
I have question when we open contact in class 2 can we use interproximal bur or not?
Can't we use inverted cone , enamel hatchet?
I would not use an inverted cone for composites due to the sharp line angles created with this bur. I'd use an enamel hatchet and be careful not to create a sharp internal line angle. Interproximal bur like a 169L, yes these are great. Thank you for the questions!
There is this thing I am confused about. I was always taught to always use diamond burs to prep the enamel but I see a lot of US dentists to use those high speed carbide burs, whether it is crown prep and now a cavity. Could you please talk more about thee difference? Doesnt the bur have rather shattering effect?
In the early days of operative dentistry, carbide steel was the only technology known to make burs. It wasn't until much later, in the 1970's and 80's that diamonds really become commonplace in dental practices and textbooks. The more recent development of operative diamonds has taken some time to catch on, and although great for less chatter when penetrating enamel, they are relatively costly and not as precise dimensionally compared to carbides. If you were to peruse the two most significant Operative texts in the US - by Sturdevant and Summitt, you'll see that the carbide remains as the go to instrument for conservative preparations.
I want ask doctor about doing class 3 composite restoration in two caries crowded teeth when you have no any space intraproxmal between the teeth when you can't place TEFLON . And thanks doctor I benefited from your wonderful educational channel a lot
Wedge, then use plastic mylar - thank you!
This is great video. Do you post videos for placing the restoration? 8 ML is an intricate fill. I do appreciate educational videos like this. I'm an EFDA student, and I do try to find as much as I can to help broaden my skill for this type for preparation. Thank you.
I will add a video on Class III composite restoration - thank you!
Thank you so much!!!!
You got it!
Hello Dr. Stevenson. Thank you so much for the video.. was very informative and helpful.
My question is, I am supposed to do a class III restoration involving the labial, mesial and palatial walls. In this situation, do I start my prep from the palatial or labial surface? Any other particular points I need to keep in mind while making this preparation? Thank you in advance.
Start the prep where the least amount of tooth will be removed. Usually lingual (not palatal) access is the most common.
Hi, can you please share the facial extension/ depth of the prep? At how much mm will the adjacent contact break easily? Thanks
The typical class III lingual approach extends 2-3 mm towards the facial. When viewed from the facial, the proximal contact will be barely broken.
Please make such a video about class5
hara. hv class 5 are easier
Hi Dr. Stevenson. Thank you so much for making these incredibly helpful videos. Your videos are an online school for many like myself who get inspiration from your work. Regarding restorative section of CDCA, the guidelines say that the examiners approve the diagnosis of the candidates before they can permit the candidates to proceed with the preparation. Can you please shed some light on the kind of diagnosis CDCA is expecting from candidates for the carious teeth? Thank you
"Tooth #20 mesial caries", or "Tooth #10 distal caries", etc...(these are just examples of diagnoses)
@@StevensonDentalSolutions 👍 thank you so much 🙏
Im curious can this be done on the central incisors all across. I have a decay/tartar likely a cavity aswell it looks like a brownish line on the backside of my central incisors.
I have no real tooth pain, feel irritation mostly but no sensitivity to hot or cold. Hopefully tomorrow I can go to my dentist and they can get a good look at it.
I am praying a simple filling will fix my issue and not need to get a crown/root canal/ tooth extraction.
Yes, composite restorations may be a good option for you. If your problem is due to wear from grinding a night guard may also be suggested or even a sleep study - sleep disordered breathing and grinding are high correlated.
HI, can you please make a video explaining class 3 cavity and its restoration for amalgam
Oh, that's a rare restoration but I'll try!
@@StevensonDentalSolutions thankyou so much, it'll be of great help.
Hi Dr. Stevenson
Would u please demonstrate the differences between class ll composite preparation with the class ll amalgam.
Thanks
Dear Dr. Stevenson,
If the hand instrument provided (enamel hatchet) is of 1.5 mm, should the cavity still be at 1.5 mm size for DL on #9? Sometimes while practicing with a constraint of the provided hand instrument, I end up making the overall prep of 2mm. Could you please share how to keep it at just 1.5 mm and still be able to use that 1.5 mm hatchet?
Thank you for this amazing video.
Best regards,
Adi
Is it acceptable if the facial extension gets near 2mm as well?
With a 1.5 mm hatchet this is very difficult - it will most always be at least 0.1 mm more than the width of the hatchet. Sometimes, you may wedge and create some separation and then it will fit easily...
good
THANKS
Hello doctor, thank you very much for your effort. Can you explain class 3for amalgam at distal of the canine?
You are creative in explaining
Your followers from Iraq🌷
I will make a video! Thank you my Iraqi friends!
@@StevensonDentalSolutions Thank you very much for your kindness🌹🌹
Sir can u please tell us about , 16 cavity prepration involving oblique ridge
I do have an MOD for a maxillary first molar - is this what you wanted? Check out the video library...
@@StevensonDentalSolutions ok sir..
Why is it that when viewed proximally, the facial wall is not parallel to the lingual surface of the tooth? Is it meant to be Parallel to the long axis of the tooth? Thank you!
The tooth is triangular as viewed from the proximal and the lingual wall and facial wall are converging, not parallel. The facial wall should attempt to parallel the facial wall. Thank you for the question!
@@StevensonDentalSolutionsThank you! Damn, i thought the box prep should have parallel walls...like an actual symmetrical box.🤦
@@James-ky7ev I hear you!
Hi Dr Stevenson, I have a question which might sound stupid. For all preparation of teeth ,from examiner point of view, what power loupes you recommend for practice? I got two loupes (3x and 6x) and my preparation seems very clumsy under 6x which seems fine and smooth under 3x. If we know what power loupes examiner will be using for marking, it'll be very helpful for students. Thanks...
Great question! Most dental school faculty and WREB/NERB examiners use 3.5x - 4.5x loupes. If the prep is smooth at 3.5x, it will always look less smooth at 6x. Using 6x takes many hours of practice and isn't initially practical. Do the best you can at 3.5x and you'll be in the "Green Zone" if you've met the criteria.
Thanks heaps Dr Stevenson for clearing doubt.
Crisp and clear knowledge 👌 . I have 2 ques:
1. Which operator position would you suggest to prepare class 3 cavity on Distolingual surface of tooth no. 12 ( first quadrant lateral incisor)? I find it difficult to access this surface while keeping the bur perpendicular to tooth and using a hatchet to smooth the walls feels impossible.
2. I am currently using 3.5x magnification for restorative work required for the exam. Do you think i should switch to 4x or 4.5x to make my work more intricate for the examiner to check 😅 what according to you will be the sweetspot for magnification for a dental student?
1. Use the 11 O'Clock position but have the patient turn away from you - this help. 2. I siwtched from 2.5x to 4.5 x after two years and then 2 years after that ramped up to 6x. I also use a microscope. If you can, push the mag as high as you can - you'll quickly adapt. 4.5x isn't that high, so you should do well.
@@StevensonDentalSolutions Your guidance is so helpful. Thankyou 🙏
@@sahilbhalla389 My pleasure - Happy New Year! Dr. S
@@StevensonDentalSolutions Happy new year to you as well 🥳
hi dr stevenson, is axial depth in a mesiodistal direction or faciolingual dimension?
mesiodistal. The faciolingual dimension is referred to as "extension facially
thanks a lot doctor !!!
Can you use a 56 carbide rather than the 329? I find it gives me a flat, smooth, facial wall.
The 330RGS does this too and avoids sharp line angles.
@@StevensonDentalSolutions I see what your saying, I just used the 330 on my practical today and it did the trick for a very smooth surface with rounded internal line angles.
@@choochd Awesome
Hi Dr Stevenson! Great video, Is this the conventional class iii prep? Why did we not place a bevel here, thanks again. Your videos are awesome
Most of us are migrating away from bevels when they don't add to the esthetics or significantly to the retention of the case. With class 3's which are prepped from the lingual, a bevel isn't helping enough to justify the additional enamel removal.
What type of bevel is indicated on class 3 Cavity ..I think it's long bevel ..Kindly 🙏🏾 reply ..
Bevels are rarely employed anymore on class III's unless: 1. they extend onto the facial and require an esthetic blend, 2. The are large and require additional retention. The US licensing exams not only don't require them, but would prefer they not be beveled. When a bevel IS indicated, full enamel thickness, followed by an infinity bevel or starburst is great for facial surfaces.
Could u tell me where u re dental school? Thank you doc
I teach at my own private facility in San Dimas, California, USA. www.stevensondentalsolutions.com
what to do if i dont have a hachet in the exam? wich instrument can i use?
Hi - use a flame shaped carbide - just the tip to remove the lips of enamel. It's harder to do but it works. Best wishes!
@@StevensonDentalSolutionsthanks a lot for your answer.
@@qusaialrawas1385 Of course, happy to help
Can you please make a vedio about class V
Will do - I have several different techniques - will make a patient video soon!
hi doc, which chair position would you suggest for preparing class 3 on mandibular canines both left and right , if we are only allowed to be between 9 - 12 o clock?
I think that 9 O'clock would be great.
@@StevensonDentalSolutions it's a bit difficult to approach the canine in 3 quadrant , i will try turning the head so i could get to a comfortable hand position . Thankyou doc , knowing i have someone to reach to for help in problematic situations means alot 🙏
What is RGS SIR??
The RGS in the logo is my initials Richard Gray Stevenson. Thank you!
don't we need to make pear shape ?
Usually rectangular is enough. I'm not familiar with the pear shaped design. Sorry.
@@StevensonDentalSolutions ok..thanks
Curious why no bevel here.
Great Questions! Thank you. Bevels are no longer in favor for small preps with no esthetic margin concerns. If the prep has ample retention and has no need to be "esthetically blended" with the use of a bevel, a bevel is not used. The bevel would not only remove tooth structure and it would render composite susceptible to fracture (as it is thin) due to occlusal contacts. Note: both the WREB and ADEX dental licensure exams removed the bevel requirement on the class III several years ago, in keeping with the science and teaching practices within the US. IF, the prep extended onto the facial, we would bevel the facial margin (esthetic blending) or IF the prep were large and needing retention, we would bevel all accessible margins. Bevels aren't contra-indicated in all preps, rather the algorithm for their use is more sophisticated. Dr. Stevenson
Thank you for the detailed repose Dr. Stevenson!
@@ThienNguyen-wh1fz My pleasure!