magnana there was a meeting to celebrate 20th year of my school of specialization and there was Prof. Birte Melsen to illustrate cone bean images of rapid palatal expansion and surgical assisted palatal expansion on adults. Better results in the latter case but roots out of bone in both cases.
She spoke about a method of a brasilian doctor to make rapid palatal expansion: 3 palatal mesial screw X side in bonded resin to minimize undesiderable effects.
But I really cannot remember brasilian doctor name.
Ciao
Luca