Dental General 0f73d7ff The occlusal surface of a primary mandibular first molar often has a prominent faciolingual ridge. This transverse ridge connects which two cusps? A Buccal and distolingual. B Mesiolingual and distobuccal. C Mesiobuccal and mesiolingual. D Distobuccal and distolingual. High-Yield Explanation Transverse ridge connecting MB and ML cusps.