A study of the effect of changes in nasal tip prominence on the sense of anterior prominence of the upper lip / 口腔疾病防治. Z ZHUANG, R BAO, M LI, W WANG, B BAO.

When the nasal tip protrusion decreased, the subjects all had the visual illusion of upper lip protrusion; and when the nasal tip protrusion was too large, the general population had the most obvious visual illusion of upper lip protrusion.

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