This woman is having some sort of dental procedure done.
A woman has a dental procedure performed.
A woman has a dental procedure preformed is a rephrasing of "having some sort of dental procedure done."
exists e1 e2 s1 x1 x2 x3 x4.(n_woman(x1) & Theme(e2,x2) & Actor(e2,x1) & v_have(e2) & Theme(e1,x4) & v_do(e1) & (x2 = x4) & of(x2,x3) & n_procedure(x3) & a_dental(s1) & Theme(s1,x3) & n_sort(x2))
exists e1 e2 s1 x1 x2 x3.(Theme(e2,x2) & Actor(e2,x1) & v_have(e2) & Theme(e1,x3) & v_perform(e1) & (x2 = x3) & n_procedure(x2) & a_dental(s1) & Theme(s1,x2) & n_woman(x1))