59 下顎恆齒之齒髓室(pulp chamber),含有明顯之舌角(lingual horn)及頰角(buccal horn)者是:
(A)側門齒(lateral incisor)
(B)第一前臼齒(first premolar)
(C)犬齒(canine)
(D)第二前臼齒(second premolar)

1. 題目解析本題考查的是下顎恆齒的齒...