In which of the following locations is a fourth root canal commonly found?

Show Answers

Mesiobuccal root of the maxillary first molarDistal root of the mandibular first molarBoth locations mentioned aboveNeither of these locations

Explanation

A fourth canal can be present in the mesiobuccal root of the maxillary first molar as well as in the distal root of the mandibular first molar. Therefore, both options are correct.