How many molars are in the four quadrants of maxillary and mandibular arches?

Maxillary arch

* Right maxilla: 3 molars (first, second, and third)

* Left maxilla: 3 molars (first, second, and third)

Total maxillary molars: 6

Mandibular arch

* Right mandible: 3 molars (first, second, and third)

* Left mandible: 3 molars (first, second, and third)

Total mandibular molars: 6

Total molars in all four quadrants: 12