noun
faculty of dentistry; dental school
Refers to the organizational unit within a university that teaches and researches dentistry. Equivalent to a college or school of dentistry.
彼は歯学部で口腔外科を専攻している。
He is majoring in oral surgery at the dental school.
この大学の歯学部は全国
This university's faculty of dentistry is nationally famous.
歯科 refers to the field of dentistry or a dental clinic, whereas 歯学部 is the academic faculty within a university.
Compound of 歯 (tooth) + 学 (study, learning) + 部 (department, faculty). The reading しがくぶ follows standard on'yomi.