Premolar and molar area: Periodontics left-oriented
First instrument in the sequence for treating all the surfaces and the furcation.
- Maxillary: Buccal and distal surfaces of sector 2, pivots at 13, then the buccal and
mesial surfaces of sector 1.
- Mandibular: Buccal and distal surfaces of sector 4, pivots at 43, then lingual and
mesial surfaces of sector 3.
