Mixed vertical and horizontal loop 7 mm high, done on the arch wire and usually located between the lateral incisor
and the canine or between the canine and the premolar. In TMA arches the "T" loop can be activated 3 mm behind
the molar tube, exerting forces ranging between 250 and 300 g.
• Principle 1.
This loop activates by being opened so it does not comply with this principle.
• Principle 2.
A vertical and horizontal loop, it closes spaces well, and having a horizontal component it has
vertical and torque control. It allows activation of the horizontal portion of the "T" so we can have more or less
vertical control.
• Principle 3.
This loop has an average wire length, so the force it exerts is of medium intensity.