der Zahnarzt
dentist
A doctor who specializes in treating teeth, gums, and the oral cavity.
Ich muss morgen zum Zahnarzt, weil ich Zahnschmerzen habe.
I have to go to the dentist tomorrow because I have a toothache.

dentist
Loading your saved state.
dentist
A doctor who specializes in treating teeth, gums, and the oral cavity.
Ich muss morgen zum Zahnarzt, weil ich Zahnschmerzen habe.
I have to go to the dentist tomorrow because I have a toothache.

The word is a simple and logical compound made up of 'der Zahn' (the tooth) and 'der Arzt' (the doctor). So it is literally a 'tooth doctor'.
Ein guter Zahnarzt erklärt genau, was er tut.
A good dentist explains exactly what he is doing.
Pay attention to the prepositions: You go 'zum Zahnarzt' (to the dentist; direction, dative), and you are or have an appointment 'beim Zahnarzt' (at the dentist's; location, dative).
Ich gehe zweimal im Jahr zur Kontrolle zum Zahnarzt.
I go to the dentist for a checkup twice a year.
Common phrases are 'einen Termin beim Zahnarzt machen' (to make an appointment with the dentist), 'zum Zahnarzt gehen müssen' (to have to go to the dentist), or 'in zahnärztlicher Behandlung sein' (to be receiving dental treatment).
Ich muss anrufen und einen Termin beim Zahnarzt machen.
I have to call and make an appointment with the dentist.