“…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,...…”