Modifications of TPAs - Miniscrews in One Place. One Concept for Three Angle Classes

- The purpose and advantages of palatal skeletal anchorage to enhance a variety of orthodontic mechanics.- The rationale for the selection of a specific miniscrew insertion site.- Design simple, individual mechanisms using miniscrews for many different malocclusions.- TPA+ with miniscrews for Class III maxillary protraction or to protract to close spaces towards the anterior.- TPA- with miniscrews for Class II en-masse retraction or as anchorage for space closure.- Modification of TPA+ or – for controlling vertical with posterior maxillary intrusion.