A simple method for aligning retroclined or ectopic teeth.

eral incisors or ectopic teeth into the main archwire can be both difficult and problematic.1 First, the forces used to create space in the arch can oppose those needed to align the teeth. This can cause binding and notching of the wire at the locations of the most misaligned teeth, resulting in increased friction and thus negating the archwire’s superelastic properties.2,3 Potentially harmful forces are also placed on the anchorage unit when aligning ectopic teeth.4 Furthermore, bonding brackets to the buccal surfaces of ectopic teeth can result in premature occlusal contacts that can dislodge the brackets. Although one method of avoiding these biomechanical problems has been recommended,5 the development of self-ligating attachments suggests another strategy, which we describe here.

[1]  Peter Rock,et al.  The effect of ligation method on friction in sliding mechanics. , 2003, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[2]  R. Kusy,et al.  Effect of archwire size and material on the resistance to sliding of self-ligating brackets with second-order angulation in the dry state. , 2002, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[3]  R. Kusy,et al.  Influence of archwire and bracket dimensions on sliding mechanics: derivations and determinations of the critical contact angles for binding. , 1999, European journal of orthodontics.

[4]  A. Gianelly,et al.  A bidimensional edgewise technique. , 1985, Journal of clinical orthodontics : JCO.

[5]  M. M. Stoner Force control in clinical practice , 1960 .