Koplik spots on the buccal mucosa are seen in relation to which of the following teeth?
Koplik spots: pathognomonic of measles 
The Koplik’s spots are white papules resembling table salt like crystals with a red base, which appear usually on the buccal mucosa opposite to first and second molar teeth. 
Ref: Shafer's textbook of oral pathology 7th edition page 348
Incisors and canine
Canine and premolar
Only premolars
Premolar and molars