歯科衛生.
a dentist
Get orthodontics.
the branch of dentistry dealing with the appearance of the teeth
a dentist specializing in diseases of the dental pulp and nerve
the branch of dentistry dealing with diseases of the gums and other structures around the teeth
a dentist specializing in diseases of the gums and other structure surrounding the teeth
It's orthodontic equipment.
the branch of dentistry dealing with the prevention or correction of irregularities of the teeth