Collocations for dentist - noun

good
qualified, registered (both BrE)
private (BrE)
NHS (in the UK)
pediatric (AmE)
cosmetic

recommend
register with (BrE)
She wasn't registered with the dentist.

appointment (AmE)
office (AmE)
chair

a dentist's appointment (BrE)
a/the dentist's office (AmE)
a/the dentist's chair (BrE)