References
- Booth-Mason, S. and Birnie, D. J. (1988) Penetrating eye injury from orthodontic headgear—a case report, European Journal of Orthodontics, 10, 111–114.
- Mossey, P. A., Hodgkins, J. F. and Williams, P. (1991) A safety adaptation to Interlandi headgear, British Journal of Orthodontics, 12, 131–133.
- Postlethwaite, K. (1989) The range and effectiveness of safety headgear products, European Journal of Orthodontics, 11, 228–234.
- Seel, D. (1980) Extraoral hazards of extraoral traction, British Journal of Orthodontics, 7, 53.