. 2020 Aug 14;8(8):e19433. doi: 10.2196/19433
©Guy Tobias, Assaf B Spanier. Originally published in JMIR mHealth and uHealth (http://mhealth.jmir.org), 14.08.2020.
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Figure 25.
Physical positioning for taking a dental selfie: with a rigid mouth opener (suboptimal).