Table 2.

A summary of the average procedure time, energy and water usage, and the estimated usage time of instruments during each procedure. Units in minutes and kilowatt hours. Adapted from Duane et al. [25]

Dental unit use by procedure type
Duration (mins)	180
Water Usage (ml)	500

Machines used and rating	Equipment usage Per appointment type (mins)	kWh endo
Dental unit motor (400 W)	3	1.2
Dental light (30-40 W)	180	7.2
Unit screen (20-30 W)	0	0
Instrument light (2,5 W)	45	0.1125
Suction (9 kW)	45	1.875
Machines operated by compressor (9 kW)	60	9
		Total power consumed
		19.3875