Dear Dr. ahmed

I suggest u to to advice ur student by doing the following steps:

1-buying and hand piece engines

2-buying artificial teeth designed for endodontic training

and u can teach them using case study presentation from ur clinic and follow them step by steps for one time per a week and for other procedure they can ask for help from any dental department near for them

Best regard

I totally agree with Morteza Banakar

every thing you can do by internet

I agree with previous strategies and encouraging students to use artificial teeth designed for endodontic training during this period.