| 摘要 |
<p>A convertible buccal tube is disclosed which includes an arch wire slot covered by a separable cover. The cover includes a mesial or front flared portion to facilitate placing the end of an arch wire therein without undesirably stressing the cover. The cover is further secured to the buccal tube body by integral seams, brazing or other adhesive means that are varied in strength mesially-distally, with about 50% greater force being required to separate the cover at the mesial end thereof. The cover and increased strength seams provide that the cover is not prematurely separated from the buccal tube, particularly during installation of an arch wire.</p> |
