Table 1. Intraoral scan strategy.

Scan strategy	Scan segment in arch portion (N)	Scan motion	Image merging area
S1S	Whole (1)	Straight	NA
S1Sz	Whole (1)	Straight and zigzag in Ant, Straight in Post	NA
S1SZ	Whole (1)	Straight and zigzag	NA
S1Z	Whole (1)	Zigzag	NA
S2S	Rt and Lt half (2)	Straight	Incisor
S2SZ	Rt and Lt half (2)	Straight and zigzag	Incisor
S2Z	Rt and Lt half (2)	Zigzag	Incisor
S3S	Ant, Rt Post, Lt Post (3)	Straight	Canine, 1st premolar
S3SZ	Ant, Rt Post, Lt Post (3)	Straight and zigzag	Canine, 1st premolar
S3Z	Ant, Rt Post, Lt Post (3)	Zigzag	Canine, 1st premolar

NA: Not applicable