The nut notch--a diagnostic sign of an oral habit.
D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007180:Incisor / Q000293:injuries*; D008297:Male; D008875:Middle Aged; D009754:Nuts; D014072:Tooth Abrasion / Q000473:pathology*