The average width of the human philtrum is different in babies than in adults. For babies, the average width of a philtrum is 7 millimeters while in adults it is 9.7 millimeters.
The average width of the central incisors and philtrum observed in male subjects were 8.510 mm. (right), 8.516 mm. (left) and 14.105 mm. Those in female subjects were 8.280 mm.
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