Both left and right mandibular first molars had normal eruption with five cusps but had three cusps on the lingual side and two cusps on the buccal side i.e. the reverse of what normally is found ...

Usually, a supernumerary cusp is an accessory cusp on the buccal or lingual surface of a normal crown. Typically, a protostylid appears as a pit and distal bending of the buccal groove or surface ...

In a randomized double-blind study, they administered 1.8 mL of 4% articaine with 1:100,000 epinephrine as a buccal or lingual infiltration in the mandibular first molar region of 20 healthy ...