“…Moreover, 14 studies did not identify a significant association between these factors [ 33 , 34 , 36 , 37 , 40 , 44 , 46 , 49 , 54 , 55 , 57 , 58 , 60 , 62 ]. With regard to gender, while eleven studies found an association between being female and increased dental service use [ 32 , 33 , 35 , 38 , 41 , 43 , 47 , 51 , 54 , 58 , 61 ], four studies found the reverse association [ 42 , 48 , 49 , 50 ] and seven studies did not find a significant association [ 34 , 36 , 37 , 40 , 44 , 46 , 55 ]. With regard to education, eight studies found a positive association between education and dental service use [ 33 , 34 , 39 , 44 , 47 , 49 , 53 , 56 ], whereas four studies found the reverse association [ 36 , 37 , 41 , 42 ] and three studies did not find a significant link [ 46 ,…”