Table 1. Characteristics of the interventional photometric equipments.

TF+DSLR: Twin flash + Digital single lens reflex camera; RF+DSLR: Ring flash + Digital single lens reflex camera; SMART: Smartphone camera; IOS: Intraoral scanners.

Group	Equipment	Calibration
1	TF (Godox MF 12 k2) + DSLR (Canon 1500D with 100 mm macro lens)	Shutter speed-1/200, f29, ISO-100, magnification-1:3, white balance-Auto, distance-30 cm
2	RF (Godox ML-150)+ DSLR (Canon 1500D with 100 mm macro lens)	Shutter speed-1/200,f29, ISO-100, magnification ratio-1:3, white balance-Auto, distance-30 cm
3	SMART (Iphone 12)	f50, ISO-200, flash-Auto, magnification ratio-1:3, white balance-5000 K, distance-15 cm
4	IOS (3 shape Trios)	Manufacturer’s recommendations