蔡佩晏醫師的矯正故事-打造你的微笑曲線專家 (Dr. Tsai 's blog)

Method 1

Use "Forestadent NiTi molar uprighting spring + two TADs"-- the posterior TAD prevents molar extrusion.

Method 2

Once we use sliding jig and bone screw (TAD) to pull the posterior teeth back, the problem we face with is first molar distal tipping.

Occasionally, I found this method could upright molar efficiently.

The method was following:

When we tip back the tooth distally, how could we upright the molar?

Use TP plus horizontal slot + 0.014 NiTi (or 0.016 NiTi, or 0.018 NiTi) 

After 3 months, #16 had been uprighted easily and surprisingly!