Operative Dentistry | Instrumentation | NBDE Part II

In this video, we discuss hand instruments and rotary instruments frequently used in operative dentistry. Thanks for watching!


Mehdi Kashani:

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

Mahbod Taheri:

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!

Parul Sanghavi:

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.

Saba Altaf:

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

river river:

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.


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!! <3