The mean pain intensity levels were significantly lower with SLF than OM at 3days ( 6.0 vs. 6.95 ; p = 0,001 ) , 7days ( 4.15 vs. 6.25 , p < 0.001 ) , 15days ( 3.45 vs. 5.35 , p < 0.001 ) , and 30days ( 3.05 vs. 4.45 , p < 0.001 ) .