PDF: The T-loop in details

Orthodontic movement is defined by the effect of the force system on the tooth and the consequent responses of the adjacent structures.

For that reason, effective space closure is challenging, and can be optimized when there is control and predictability of the force system.

The released forces must be continuous and the center of rotation of the tooth must be constant to release biologically favorable forces that does not continually modify the stress areas of the periodontal ligament.

The simplest way to determine and visualize the force system is utilizing two groups of teeth, to obtain one center of resistance and one center of rotation in each unit. This is possible using the segmented arch approach. Moreover, the greater interbrackets distance and smaller load/deflection rates of the loops are favorable to the dental movement biology.

Pre-calibrated loops, as the T-loop, are an important part of this technical approach.

Amanda Frizzo Viecilli1, Maria Perpétua Mota Freitas2
1Private practice (Canoas/RS, Brazil).
2Universidade Luterana do Brasil, Dentistry Course (Canoas/RS, Brasil)
Dental Press J Orthod. 2018

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