Oral cavity is divided in two major arches and each of these arches are divided into 2 Quadrants each.
The dental archs are divided into 4 Quadrants:
Maxillary Quadrants:
Right Maxillary Quadrant ( I )
Left Maxillary Quadrant  ( II )
Mandibular Quadrants:
Left Mandibular Quadrant ( III )
Right Mandibular Quadrant  ( IV )
Each Quadrant has 8 teeth- 3 anterior & 5 [...]