Operative Dentistry | Instrumentation | INBDE, ADAT

[@mentaldental]

Quick correction! Just a minor adjustment to the instrument formula section. This doesn't impact what you need to know for the board exam, but if you're curious, the second number of the formula is actually measured as a percentage of 360˚ (similar to how the fourth number is calculated) of the cutting edge in relation to the long axis of the handle. The important thing though is this number is omitted if the cutting edge is perpendicular to the blade as we talked about in the video. I also drew the angle for the fourth number incorrectly - I should’ve drawn the supplementary angle in that case. Thanks again for watching!

[@janicem8324]

Could you please clarify if this formula is the same as GV Black's instrument formula? GVB's 3 or 4-numbered formula says that the 2nd number and 4th number is measured in centigrades (100th of a circle). Thank you

[@mentaldental]

@@janicem8324 Exactly! As I mentioned above, both the second and fourth numbers are measured in centigrades (a percentage of 360˚ or as you said 100th of a circle).

[@janicem8324]

@@mentaldental A textbook said the number is centigrade of 100˚, not out of 360. Please see link below (page 50) books.google.com/books?id=HgRACwAAQBAJ&pg=PA50&lpg=PA50&dq=gv+black+instrument+formula+centigrade&source=bl&ots=fEmL7YWb-h&sig=ACfU3U0zwOqffgBzYWIRx4anfq-fCWMO5A&hl=en&sa=X&ved=2ahUKEwjTqrS9na_pAhVWjp4KHXYEBWAQ6AEwCnoECAoQAQ#v=onepage&q=gv%20black%20instrument%20formula%20centigrade&f=false

[@mentaldental]

@@janicem8324 Thanks for linking that textbook! To be honest though, that doesn't make sense. Centigrade is a percentage of 360˚ or a full circle. So 95 centigrade= 95% of 360˚= 342˚ for example.

[@maryamzafar4545]

@@janicem8324 where can we find you you lecture on geenral operative procedure

[@strawberrylala5529]

Don’t forget to like the individual videos... he deserves it

[@umairamomand3108]

Dr.Ryan you are game changer,sending lots of love

[@mehdiakashani2353]

Thank you, Ryan as always it is a great job. I only wanted to remind you that at 12:30 when talking about the 4h number it is better to draw the supplementary angle. Thank you again and good luck

[@mentaldental]

Yes, good point, I should’ve drawn the supplementary angle in that case. Thank you for pointing that out!

[@parulsanghavi4006]

Thanks Dr Ryan for excellent videos. Very well explained, to the point and very crisp. Appreciate the efforts you have taken in imparting relevant information in a very simplified method and are easy to remember.

[@mentaldental]

My pleasure!

[@AAYUSHIIITIAN-xy6em]

Loving all ur lectures in a row, so simplified

[@mentaldental]

I’m glad you’re enjoying the video series! 😄

[@زهراء-ر1ف2و]

hi Rayan ,I'm here to watch the videos again from the last once year because of your great and clear explanation and also to get back the information thank u so much. from Iraq🖤

[@yasminamohammed7741]

Hey Dr. Rayan , you are amazing , um so greatful for all of ur efforts , thank you 🤍

[@AhmedSa]

we appreciate the effort

[@najiakarim9391]

I’m dental student ur videos helped me so much thank you

[@harpreetrandhawa8958]

Thanx immensely doc !!!!

[@bexayof5872]

Thank you so much, Dr Ryan! 🦋

[@israaalaraj9727]

thank you allot , It was so helpful and I am enjoyed really

[@rawanaa5843]

You are amazing really ❤️

[@loganharmon7807]

Great lecture! Thank you.

[@lenalaith4809]

thank you so much ,great job

[@crown2ibz99]

amazing lecture! thank you

[@Orihimessocks]

after an entire d3 year of not knowing what these are called I finally learned lmao

[@nicholaswoehling9223]

that angle ain't 50; good video!

[@2012farfar]

Why this video wasn't part of the bootcamp INBDE series

[@BeSmilewithDrBasem]

same question,please why it,s not in pootcamb

[@lora7677]

Thank you!

[@sameralanazi3561]

To easily memorize the Cutting instrument formula Remember WALA Width Angle of Cutting Edge Length of the blade Angle of blade

[@florcy156]

thank you for the great video. So when is the next video coming?

[@mentaldental]

It is out right now!

[@arianavera7571]

Gracias 2.0 I´m understanding everything and english isn´t my first language

[@hephzibahmakhetha4371]

Thank you very much

[@숏펀-h4t]

Thank you Dr. Ryan. Can I ask you how did you get the 50 degree when our formula is 14 percentage of 360 degree? I cant understand how you get the 50 degree through this formula

[@benitajat.9625]

Hi just to offer some help... 14% is 0.14, therefore 0.14×360 = 50.4. I think that's how he got it.

[@DrAlamdinlectures]

Nice lectures sir very informative

[@sabaaltaf5955]

hey Dr Ryan great job and many thanks for all the effort I hope you can as well share the slides If you don't mind as we can add the notes and revise the info easily

[@mentaldental]

You're welcome! You can get the slides one of two ways. You can either sign up on my Patreon page for at least $10/month www.patreon.com/mentaldental or send $30 to me directly via PayPal www.paypal.me/mentaldental for the NBDE Part II slides ($15 for the INBDE slides).

[@mahbodtaheri3196]

Hello sir, I was thinking (according to some websites and photos i've seen) the second number is actually the number between the shaft's axis and the cutting edge but as I understood you said it is between cutting edge and the blade, would you please clarify if i'm wrong or not? thank you for all your incredible videos!

[@marwanakkad6526]

Great video👌 I think that at 12:14 the angle of the 4th number is demonstrated wrong (you can easily recognize this because it should be 50 while the purple angle is Obtuse angle measuring more than 90 degrees) right?

[@sofiabock]

14% of 360 is 50

[@alirezamotazarre5512]

exactly

[@Hbookhbhbhjkl]

Thanks💙🌿

[@jewel3337]

great video! very informative. Just one thing with number 4, the blade angle (50 degree) is the angle formed on the left side towards the end of the instrument, not the right side one you marked. subscribed!!

[@jocelynhua9761]

In the Cutting Instrument Formula, the fourth number is a obtuse angle. It does seems like 50 degrees. Can anyone explain my question? Thank you.

[@cecelianguyen4682]

Great video as always! Was wondering how many total operative videos you were planning?

[@mentaldental]

I am planning for six videos in the series, followed by our bonus video with practice questions!

[@mikesterman123]

Why does the document I’m using say that 245 is preferred for peds? I agree with you that 330 is better but I’m not sure why it says 245 is?

[@dentdoct1983]

Sir, can you please tell why 4th and 6th marking is absent in William's probe otherwise video was so useful

[@mentaldental]

It makes it easier to find the 5mm mark!

[@revalidandonacalifornia]

How can possibly the 4th number of the cutting instrument on your example be 50 degrees if it's clearly larger than 90?

[@mentaldental]

Look at the following slide. The 50˚ angle is drawn between an imaginary line extending the long axis of the handle beyond the blade and the blade itself.

[@revalidandonacalifornia]

@@mentaldental Oh, Thank you! :)

[@ajok822]

Thanks very much

[@nickarnaudntore5383]

Thank you Sir

[@dlevy82500]

memory trick for the 245...... 30 x 8 = 240

[@ujjwalasingh7925]

Can I get this presentation please. This video has helped me a lot for my viva.

[@mentaldental]

Yes! You can get the video slides one of two ways. You can either sign up on my Patreon page www.patreon.com/mentaldental or send $30 to me directly via PayPal www.paypal.me/mentaldental

[@ghadiralawdi4585]

Thank youuu

[@mosabdabboussi1391]

Thak you ,nice

[@ammoula2974]

Thank you!!!

[@riverriver7842]

Hello You mentioned in the periodontics series that Gracey is a curette. However, in this lecture you are saying that they are scalers and that the curette is not pictured. Am I missing something? Thank you for the great lecture as always.

[@mentaldental]

"Scaling" instruments is an overarching category and includes either sickle scalers or curettes. Graceys are area-specific curettes for removing subgingival calculus.

[@fergiejohnson633]

Why there's no videos about OMFS

[@mentaldental]

There’s an entire series dedicated to Oral Surgery on my channel!

[@fergiejohnson633]

@@mentaldental Oh sorry

[@ANASKHAN-kn1nj]

❤

[@learnchinese2314]

thanks

[@majdliaaudisho6238]

Hey dr. Rayan..I didn't find this vid on bootcamp with your vids...please say it's not important anymore :D... I don't like memorizing all those numbers

[@mentaldental]

I’m afraid it’s still important, sorry! 🥲

[@حسنرياض-س4ح]

How can I have your ppts?

[@mentaldental]

You can get access to the PDF slides one of two ways. You can either sign up on my Patreon page for at least $10/month www.patreon.com/mentaldental or send $30 to me directly via PayPal for the NBDE Part II slides only (or $15 for the INBDE slides only) www.paypal.me/mentaldental

[@crenapun57]

tq

[@cbenzo5459]

Thank you so much, Dr Ryan! ❤️

[@janviscience763]

Thank you sir