Dental General 3088b7a9 In EPT most efficient site of testing for posterior is: A Cusp tip of the mesiobuccal cusp B Cusp tip of the mesiolingual cusp. C Equal over all the cus tips. D None. High-Yield Explanation For incisors- incisal edge is the most efficient site. For posteriors- mesiobuccal cus tip is the best site.