T-LOOP POSITIONING QUICK REFERENCE CARD

ScenarioT-Loop PositionResulting Effect
Standard retraction with equal controlCenteredBalanced α and β moments; negligible vertical force
Need to anchor molars (prevent mesial drift)Posterior↑ Beta moment, molars stabilize; anteriors retract + intrude
Need strong anterior retraction with minimal molar effectAnterior↑ Alpha moment, anteriors retract efficiently, but risk of extrusion
Patient with deep bitePosteriorHelps intrude anteriors
Open bite or no vertical concernAnterior or CenteredUse depending on anchorage needs

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