Repetitive tasks can cause health problems for dentists. Especially with high viscous materials an effort is necessary. A simple way to easily apply high viscous materials is to use a dispenser.
The publications mentioned in the film can be found here:
Clinicians Report August 2019, Volume 12 Issue 8
Cochrane systematic review, August 2018
Carpal tunnel syndrome – an occupational hazard facing dinestry, Sagar FDA world dental federation, 2013