All Ceramic Crown Preparation for Lithium Disilicate #4 KILGORE

Рет қаралды 160,017

4 жыл бұрын

Indirect restorations, such as crowns, are suggested to reinforce and restore damaged tooth structure. Lithium disilicate and zirconia are two of the most often used materials for all-ceramic crowns because they combine good aesthetics with very desirable mechanical qualities. In this video, Dr. Richard Stevenson demonstrates about All Ceramic Crown Preparation for Lithium Disilicate #4 KILGORE with a description of a FILLET finish line.
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All Ceramic Crown Preparation for Lithium Disilicate #4 KILGORE
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Thanks for watching!

Пікірлер: 145

@mohammadkh2620 5 күн бұрын

Thank you very much from Syria 🇸🇾

@StevensonDentalSolutions 5 күн бұрын

My pleasure!

@dr.chireu 3 жыл бұрын

Clean and beautiful as always! Btw, thank you so so much from the bottom of my heart for making these videos. They are a great help everyone who is watching them, and they helped me to get into the US 2 years International Dental Program for foreigndentists. I hope I'll have a chance to meet you one day in person! God Bless You!

@StevensonDentalSolutions 3 жыл бұрын

Thank you for your kind words - hope to meet you too. It's a pleasure helping. RGS

@obo012345 4 жыл бұрын

Keep posting,we’re learning a lot from u. Thank u for the video

@StevensonDentalSolutions 4 жыл бұрын

Thank you Doc

@drmalek2000 4 жыл бұрын

Thank you Dr Steven , you have a skilled hand

@StevensonDentalSolutions 4 жыл бұрын

Thank you Doc.

@myrnasharif499 Жыл бұрын

thanks, Dr. Stevenson, i appreciate very much for your precise and accurate teachings for all your videos. hope some more videos esprcially in preparation of ceramiic, zirconia, pfm. have a good day .!

@StevensonDentalSolutions Жыл бұрын

My sincere pleasure!

@VinayKumar-ch6nb 3 жыл бұрын

Amazing , you work as simple as cutting a cake, and as prescise as cutting a diamond

@StevensonDentalSolutions 3 жыл бұрын

Very kind of you! Thank you.

@omerrauf331 4 жыл бұрын

Thanks so much for such educational content! Keep up the good work!

@StevensonDentalSolutions 4 жыл бұрын

I promise I will!

@dr.yogitaanant4148 2 жыл бұрын

Thank you Dr. Stevenson for such detailed explanation, it’s a phenomenal preparation. Though I am bit late for watching this video.

@StevensonDentalSolutions 2 жыл бұрын

Thank you Doctor!

@hawrazhede 4 жыл бұрын

Welcome back glad to see u again Looking forward for new videos

@StevensonDentalSolutions 4 жыл бұрын

Great to be back!

@dr.sanket 3 жыл бұрын

just amazing sir, textbook preparation seen like never before

@StevensonDentalSolutions 3 жыл бұрын

Thank you Doc.

@KiLLtRoCiTy01 2 жыл бұрын

perfect as always

@maamoumaboukhalil9448 3 жыл бұрын

Prof stevenson thank alot lam learing from you different new ways of tooth preparation really dr stevenson the best prof in the world due to learing all , while in the dentistary sociaty no any learn and give advance inforamation like prof stevenson

@StevensonDentalSolutions 3 жыл бұрын

Thank you doctor

@Tengrist 2 жыл бұрын

Hello Dr. Stevenson, I'm a denstistry student(2. year of 5) from Turkey, great respect for your clean explanation and your choice of camera angle.

@StevensonDentalSolutions 2 жыл бұрын

Thank you for watching - best wishes, Dr. Stevenson

@tangutooritrinath5291 4 жыл бұрын

Thank u Dr. Stevenson for ur Contribution for the Dentistry..... I am a student from India 🇮🇳..... Learning a lot from ur Videos and guidance........... Plz keep giving ur knowledge, Thank u sir, Regards

@StevensonDentalSolutions 4 жыл бұрын

Greetings! Thank you.

@Dr.Youssef_Elatyer Ай бұрын

Good job 👏🏻

@StevensonDentalSolutions Ай бұрын

Thank you Doc!

@user-zc1pw6pm6x 18 күн бұрын

i envy your golden hand. thx a lot for sharing your technics and tips

@StevensonDentalSolutions 18 күн бұрын

Thank you for your support! Dr. S

@sinjo1715 2 жыл бұрын

Tank you so much for the video, very helpfull, keep the good work

@StevensonDentalSolutions 2 жыл бұрын

Thank you - will do my best

@selvarajnatarajan6168 4 жыл бұрын

Excellent doctor

@StevensonDentalSolutions 4 жыл бұрын

Thank you Doctor.

@muazsalim4431 2 жыл бұрын

thanks for the video,, it really help me with the preparation

@StevensonDentalSolutions 2 жыл бұрын

Great!

@layansuleiman8653 4 жыл бұрын

Hello Dr, thank you so much for the amazing videos! Could you please make a video explaining shade selection? Thank you very much !

@StevensonDentalSolutions 4 жыл бұрын

Great topic! I will in the future. Thank you for watching.

@newworld9338 3 жыл бұрын

Good job

@independentthinker1629 4 жыл бұрын

Appears to be a highly skilled workmanship! I wonder how thick the typical enamel structure is that allows so much reduction of the tooth without exposing the dentin structure? Great video!!!

@StevensonDentalSolutions 4 жыл бұрын

Typical enamel is only 0.3 mm or so thick for the most gingival 1 mm area on anterior teeth and about the same for posterior teeth. It's very hard no to expose dentin for crown preps, even with the new materials. A "Vonlay" (veneer with an onlay) prep will allow for enamel preservation on the facial if it is very minimally reduced.

@shot336 4 жыл бұрын

happy new year dr all the best

@StevensonDentalSolutions 4 жыл бұрын

Happy New Year!

@pikaraichu6516 4 жыл бұрын

Your videos are helpfull, thank you

@StevensonDentalSolutions 4 жыл бұрын

Thank you for watching!

@mahdibayati3806 4 жыл бұрын

Thank you dr. stevenson. If possible make a video about custom post made with pinjet and acril

@StevensonDentalSolutions 4 жыл бұрын

Okay - will do

@haitham172208 4 жыл бұрын

Thank you

4 жыл бұрын

Finally new video!!!!

@StevensonDentalSolutions 4 жыл бұрын

Yes, sorry it took so long!

@sungit2g111 3 жыл бұрын

i just watched your video by the end of the month I will open my own clinic

@StevensonDentalSolutions 3 жыл бұрын

Okay!

@Dentemnet 3 жыл бұрын

This is great educational video. Can you please enlist all the burs you used?

@StevensonDentalSolutions 3 жыл бұрын

847KR-016 occlusal clearance KS0 axial reduction 8847KR-016 smoothing occlusal KS0f smoothing axial

@nausheerpagarkar490 4 жыл бұрын

Great prep sir. Your videos are always so helpful. What do you think about vertiprep ?

@StevensonDentalSolutions 4 жыл бұрын

Hi - as long as the margin is a fillet and not a knife edge, no problem. The vertical-prep has zero research to support it at this time.

@drmarfavs 4 жыл бұрын

Simply amazing. May I ask what camera, lens and lighting system you use for your videos? Thank you in advance.

@StevensonDentalSolutions 4 жыл бұрын

Canon Vixia GF40 with 2X Macro adapter and two LED lights. Thank you for watching Doc!

@rocky-vo9gn 3 жыл бұрын

Tq doctor helped me for my pre clinic work but we can use flat end taper to achieve this outline u have done we usually use flat end taper and anyways tqs doc for the technique u shared

@StevensonDentalSolutions 3 жыл бұрын

Yes the flat end taper diamonds will accomplish the finish line you are looking for, however, internally they remove more tooth structure. I prefer a modified flat end like a KS 0 or 1.

@hassanouda1953 3 жыл бұрын

These videos are really helpful, thank you so much, Doctor but I still don't know how or when to decide which type of finish line to use !?

@StevensonDentalSolutions 3 жыл бұрын

I'd use a fillet margin for all ceramics, a shoulder for PFM, and a chamfer for metal margins.

@Dr_n27 4 жыл бұрын

Great video, thanks dr Please in next video how to make temporary crown and how to remove it and cementation the final crown

@StevensonDentalSolutions 4 жыл бұрын

Sounds great - will put this in the queue

@DoctorAj2023 17 күн бұрын

Great as always i just have a question can we use KS0 to prepare chamfer margin

@rehamfaisal7761 4 жыл бұрын

Thanks alot dr , can u plz explain vertical prepration ,how to do , which cases and all details

@StevensonDentalSolutions 4 жыл бұрын

The vertical preparation is one which uses a uniform taper from gingival to occlusal and a knife edge finish line. It is said to conserve more tooth structure at the gingival and leave more enamel intact. The only challenge technicians have with this prep is that Zirconia is very weak and until it is sintered and it is fragile. Also, the final crown can be over contoured at the gingival due to the technician not thinning out the zirconia for fear of chipping. I'm not a fan and will wait for clinical data to support a change like this. Thank you!

@ah-bt7do 4 жыл бұрын

hi Dr. thanx alot plz can I ask you why you dont use tapered bur as usualy text book say instead of straight round end bur and the finish line you did it always above the gingiva why not so close with line of gingiva

@StevensonDentalSolutions 4 жыл бұрын

Clinically the finish line should be closer to the gingiva or even sub gingival. The tapered but are good but they are wider at the the shank end, making them a bit tougher to use inter proximally. I usually like to create the draw myself rather than the bur but not always...

@joshalum732 4 жыл бұрын

Hey Doc, you think you will be doing a bridge prep video?

@StevensonDentalSolutions 4 жыл бұрын

Soon - I've been swamped with patients and courses, but I'm working on it.

@RADIUMGLASS 2 жыл бұрын

That music was used in NBC's To Catch a Predator.

@xxxxxxxxxxxxxxxxxx30 3 жыл бұрын

Hi Dr. On your PFM premolar video, you used a T prep to make an occlusal reduction. In this video, you make depth cuts with a 330 carbide bur. Is one technique more practical than the other? I tried T Prep last week on dentoform & it was frankly a bit challenging. For a second year student, Is it easier/more practical to make depth cuts with carbide or keep practicing and perfect T prep for occlusal reduction?

@StevensonDentalSolutions 3 жыл бұрын

I hear you! You may with to Tty a combination of the two: use the carbide for the depth cuts, then just reduce one half, so you end up with a wall adjacent to your reduction that allows you to judge reduction.

@xxxxxxxxxxxxxxxxxx30 3 жыл бұрын

now that’s a Stevenson dental SOLUTION! Thank you!! Your work is of great service to students & clinicians alike :)

@user-xl7gk9si7r 4 жыл бұрын

What is that? Yep, masterpiece!

@StevensonDentalSolutions 4 жыл бұрын

Thank you Doctor!

@om1989gm 4 жыл бұрын

Just another great work.If I may a question Doc how deep would you prefer to go in marginal preparation? subgingival or equalgingival? what would you suggest? thanks for this not only for students video

@StevensonDentalSolutions 4 жыл бұрын

If esthetics is an issue, I usually go equal gingivally or slightly below (0.5 mm). Otherwise, supra gingival. Thank you Doctor.

@lannyrubin2600 3 жыл бұрын

can you tell me where I can purchase the RGS instruments. I have been practicing for 35 years and never came across these instruments.I believe they will be better than the bite tabs I have been using. Thank you.

@StevensonDentalSolutions 3 жыл бұрын

Here is the link, Thank you! stevensondentalsolutions.com/product/den-mat-rgs-1-2/

@lannyrubin2600 3 жыл бұрын

Thanks for the quick response. I just placed the order and can't wait to try these RGS instruments. Needless to say I am enjoying all your videos.

@alikhalid3668 Жыл бұрын

WONDERFUL I am super amazed at your fine work What if we hit the adjacent teeth which can lead to failure at exam Can you make a video how to fix these errors?

@StevensonDentalSolutions Жыл бұрын

Thank you! I usually use a composite disc series and try to maintain contour as I remove the scratches. I would also recommend using an InterGuard (by UltraDent) if allowed, or a FenderWedge to protect the adjacent tooth. Best wishes.

@alikhalid3668 Жыл бұрын

@@StevensonDentalSolutions Thanks alot Sir

@salihayounis1508 2 жыл бұрын

Thanks can you make acc video on maxillary molars on Colombia and Kilgore and can we use this reduction technique on molars than how we will preserve anatomyn

@StevensonDentalSolutions 2 жыл бұрын

Yes, will do. You may use the T prep with 2 "T's" - one centered on the MB and one centered on the DB.

@hamidazizi6600 4 жыл бұрын

Thank you so much for t he video. We miss you 🌹,,, I thought the finish line should be 1mm, Is there any simple solution to save the neighbored teeth during the prep? The page technique?? I would love to know about fiber post placement and please let me know what kind of material you recommend for crown for the first upper premolar? Thank you 🙏 Hamid

@StevensonDentalSolutions 4 жыл бұрын

Hi Doctor! Thank you for your comments and questions. The e.max finish line need not be as much as a Zirconia restoration or a PFM. Clinical trials have shown that less reduction is acceptable with lithium disilicate in the axial areas (not the occlusal). To save the adjacent teeth I use small burs and leave a shell which protects the adjacent teeth. For most upper first premolars with no issues with shade and normal function I'd recommend lithium disilicate.

@hamidazizi6600 4 жыл бұрын

Stevenson Dental Solutions thank you 🙏

@StevensonDentalSolutions 4 жыл бұрын

@@hamidazizi6600 My pleasure - new videos being edited now!

@homejane9719 2 жыл бұрын

The bur you used is radial shoulder for prep ? Round ended tapered bur ?

@StevensonDentalSolutions 2 жыл бұрын

For an all-ceramic the ideal margin is a fillet, which may be created with a round ended tapered bur or a KS bur. A radial shoulder also works, although ore aggressive - like an 847KR-016.

@macrodentistry886 Жыл бұрын

Can we get 90 degree external line angle with Ks0 bur doc? I am kinda confused when i use ks0 bur bc it lead to sloppy shoulder so i was wondering if it’s acceptable? Much appreciated

@StevensonDentalSolutions Жыл бұрын

When you start out, the shoulder will be smooth and continuous, but not shaped correctly. Near the end of the prep, tip the bur (use the KS0f) so that is is parallel to the root and freehand the refinement of the finish line, to make it 90 degrees externally. This is simple on the facial and lingual and a little more difficult interproximally.

@macrodentistry886 Жыл бұрын

@@StevensonDentalSolutions thanks alot doc what i am facing tbh is that when i remove the lipping caused by the same of the bur i end up with slightly obtuse angle as i am using hatchet to remove the lipping…. I will try your recommendations and see the difference thanks alot doc

@kiko5mak 4 жыл бұрын

Can you make class V cavity prep with restoration video please?

@StevensonDentalSolutions 4 жыл бұрын

I sure will - on a patient I hope.

@charleskocun6754 Жыл бұрын

What are your thoughts on the Vertiprep? Thank you

@StevensonDentalSolutions Жыл бұрын

To my knowledge there have been less than 5 clinical trials on this design and the conclusions are that it is comparable, yet leaves some patients (up to 25%) with chronic gingival inflammation. Additionally, the time required between prep and delivery isn't going to work well in most US dental practices. My Ph.D. colleagues who look at restoration fractures are not fans of the feather/knife edge finish line associated with this approach. Until more convincing evidence emerges, I woiuld avoid this design and stick with the proven concepts.

@charleskocun6754 Жыл бұрын

@@StevensonDentalSolutions thank you for sharing your knowledge! It is truly appreciated. Oddly enough that camp espouses that gingival health is better with a feather edge than any other margin. It’s so hard to know the right choice. However you back your statements up with studies which is very impressive

@maryamhaqh5482 2 жыл бұрын

Sir if you could let me know..which finish line good supra or subgingival for all ceramic

@StevensonDentalSolutions 2 жыл бұрын

on the typodont - always supra. On the patient it depends on many factor: esthetic demand, pre-existing wear at the cervical, caries, pre-existing restorations, retention needs, material used, adhesive technique vs cementation...

@maryamhaqh5482 2 жыл бұрын

@@StevensonDentalSolutions posterior teeth rct treated..all ceramic..rely x used for cementation..no cervical decay..will supragingival finish line be the right choice ..mild gingivitis

@StevensonDentalSolutions 2 жыл бұрын

@@maryamhaqh5482 yes if esthetics will be preserved.

@khalidahmed5903 4 жыл бұрын

Great video as always Doc but it took a long time. It would be great if you post 2-3 videos every week if u can. Thnx again Doc we appreciate your hardwork

@StevensonDentalSolutions 4 жыл бұрын

I'll do my best!

@user-no7kr5gi7t 4 жыл бұрын

Sir i Really want to know how to have a perfect limit without causing bleading in the gingiva

@StevensonDentalSolutions 4 жыл бұрын

I like to place a cord first or use Tephlon tale in the sulcus to protect the tissue when I'm not able to place the rubber dam.

@user-no7kr5gi7t 4 жыл бұрын

But if i havnt acord. What coule i do

@StevensonDentalSolutions 4 жыл бұрын

you may try teflon tape or even cotton which is stretched and made into a cord shape.

@hadeerahmed1619 4 жыл бұрын

❤️

@sheikhnissar6936 Жыл бұрын

I think , occlusal reduction is 1.6 mm, buccal, lingual , proximal 1mm?

@StevensonDentalSolutions Жыл бұрын

Yes, that will work well.

@allantheodor6470 2 жыл бұрын

Can I use 847 016 instead of ks0 bur ? My concern is internal line angle which should be rounded so idk if 016 can give that kind of margin

@StevensonDentalSolutions 2 жыл бұрын

847 will give a shoulder with a fairly small internal radius. I'd prefer the 856-016 for this if the KS is not available.

@allantheodor6470 2 жыл бұрын

@@StevensonDentalSolutions my board exam provide only 847 and 856 016 and they want shoulder margin so I was think if it’s possible to finish the shoulder with 856 to get rounded internal line angle of the shoulder

@StevensonDentalSolutions 2 жыл бұрын

@@allantheodor6470 it is - nice

@ghazalb8966 4 жыл бұрын

Thank you for the video! My question is, is the margin width here for all-ceramics sufficient? I know it should be around 1.2 mm to provide enough space for the ceramic to go on. Please correct me if I’m wrong :)

@StevensonDentalSolutions 4 жыл бұрын

For PFM you are correct, but not for all-ceramic - this is monolithic lithium disilicate and marginal thickness as little as 0.3 mm are acceptable. We use this for veneers all the time. Thank you for your question.

@potatohead4527 2 жыл бұрын

May i know what is the magnification of your lopes?

@StevensonDentalSolutions 2 жыл бұрын

6x usually for general dentistry but I also go up to 30x on the microscope for detailed work, endo, microsurgery and implant mechanical rescue procedures, and down to 4.5x for oral exams, and scaling and root planing. I would recommend at least 3.5x prismatic with illumination.

@potatohead4527 2 жыл бұрын

@@StevensonDentalSolutions thank you doctor

@Pushyhog 4 жыл бұрын

my dentist growned the shoulder down up in the gum, not visible. implant doc said thats ok. show finished tooth ready for crown and inside of crown fo a great vid. fitting crown to prep. there are million of these same vids weve seen 100 times. show it all in one vid.

@StevensonDentalSolutions 4 жыл бұрын

Okay

@CouplandsSharpener 4 жыл бұрын

Dr Stevenson could you make a video on preparing typodont teeth for a conventional bridge? Thank you

@StevensonDentalSolutions 4 жыл бұрын

I have one on my website but might do one for KZfaq, albeit shorter. Thank you!

@El_mahdi313 4 жыл бұрын

Hi Dr.stevenson we miss you..

@StevensonDentalSolutions 4 жыл бұрын

Yes - I'm back finally!

@zoldik2107 Жыл бұрын

Dear dr how much u reduction ( lingual + buccal )

@StevensonDentalSolutions Жыл бұрын

0.6 mm for e.max and 0.8 mm for zirconia is my recommendation.

@zoldik2107 Жыл бұрын

@@StevensonDentalSolutions thank you so much dear dr

@DragoDent 2 жыл бұрын

😍😍😍😍😍😍

@StevensonDentalSolutions 2 жыл бұрын

Thanks!

@m.a.c.4469 Жыл бұрын

Do you need a fillet with Zirconia Crown?

@StevensonDentalSolutions Жыл бұрын

It would be the strongest, although dentists are experimenting with other designs. So far we have little support for any other design from good research.