This is the 13039th most frequent Swedish word.
tandläkaren
The dentist.
The usage of 'tandläkaren' refers to a specific professional, the dentist.
Tandläkaren undersökte mina tänder.
The dentist examined my teeth.
Here, 'tandläkaren' is used in the context of an entity providing a service.
Jag bokade en tid hos tandläkaren.
I booked an appointment with the dentist.
In this sentence, 'tandläkaren' indicates the professional giving advice.