Correlations of Items Related to Mouth Function in the IT-FDI and the SFGS (N=100)a
↵a Reported as the Spearman coefficients of correlation (r). IT-FDI=Italian version of the Facial Disability Index, SFGS=Sunnybrook Facial Grading System.
b Levator labii superioris alaeque nasi muscle.
c Zygomaticus-risorius muscle.
d Orbicularis oris muscle.