- Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage. Miyawaki, S., Koyama, I., Inoue, M., Mishima, K., Sugahara, T., Takano-Yamamoto, T. American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. (2003)