| 摘要 |
Danger of serious injury caused by sharp projections on a displaceable intraoral orthodontic appliance is avoided, or at least greatly decreased, by providing guards alongside such projections or by substituting guards for such projections. Such a guard can be a wire having an enlarged blunt end portion preferably in the form of a loop. The guard wire is mounted alongside the sharp projection of the orthodontic appliance, such as an inner bow anchor tip, and projects beyond such tip. In some instances, the sharp tip, such as a spur, can simply be replaced by a wire having a blunt tip.
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