Apical root resorption in orthodontically treated subjects: analysis of edgewise and light wire mechanics.

@article{Beck1994ApicalRR,
  title={Apical root resorption in orthodontically treated subjects: analysis of edgewise and light wire mechanics.},
  author={B W Beck and Edward F. Harris},
  journal={American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics},
  year={1994},
  volume={105 4},
  pages={350-61}
}
Of the several modes of tooth movement, pressure from intrusive forces seems the most likely to cause external apical root resorption (EARR). This has been demonstrated for incisors in human beings and molars in laboratory animals. The present study examined full-banded adolescent patients and scored the degrees of in-treatment root resorption throughout the dentition. Just Class I cases with four first premolar extractions were used. Equal samples of conventional Begg and Tweed treated cases… CONTINUE READING