Stephan and Henneberg used the distance between the canine teeth as a means of estimating mouth width when the face is in a neutral expression. The authors are from the University of Adelaide in Australia.


Patient selection: 93 male and female participants, probably adults, with Asian and European ancestry. While the number of European females was good (44), only 5 "others" were measured.


Measurement: distance between the most lateral aspects of the canines


NOTE: I could not find reference to use of the maxillary/upper vs mandibular/lower canines. Looking in the mirror, the intercanine distance for the upper canines is greater than that seen with the lower canines. I will use the upper canines in the spreadsheet.


The mouth width was referred to as the chelion-to-chelion distance.


ratio of canine-to-canine vs chelion-to-chelion distance for all groups =

= 0.758


mouth width in centimeters using the average factor for all races and both genders =

= 1 / (0.758) * (intercanine distance in cm) = (1.31926 * (intercanine distance in cm))




Central or Southeast Asian, male


Central or Southeast Asian, female


European, male


European, female





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