Fig. 3: Depiction of an operator’s position during caries preparation and composite placement procedures.
From: Effect of microgravity on the feasibility and accuracy of dental procedures

The practitioner is shown in a 9 o’clock kneeling position. To maintain this position during the parabolic flight manoeuvre, the practitioner’s legs were strapped at the knees. On the right side of the image, another researcher is experiencing microgravity. (Photo: Reproduced with permission from ©ESA, with modifications).