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Biomedical subjects

L B Crawford

Publications and source records attributed to L B Crawford.

4 recordsLinked to original sources

Four impacted permanent canines: an unusual case.

Impacted permanent canines in a child, particularly in the maxilla, pose a functional as well as an esthetic concern for the patient and parents alike. Informing the parties involved that all the permanent canines are impacted is, needless to say, a distressful dilemma for the parents and a unique challenge for the orthodontist. The response to the treatment in this case was quite acceptable. All 4 canines were properly aligned with the aid of orthodontic traction and surgical assistance, and now the patient possesses confidence to smile and has enhanced self-esteem. There is no additional cost or burden of prosthesis for the parents, since all 4 impacted canines were successfully positioned, and all are natural and beautiful teeth. The root resorption that occurred may have been the result of the long treatment time or the result of root movement during incisor uprighting, both of which have been associated with this phenomenon. As in many of these cases, proper gingival contours of one of the orthodontically erupted mandibular canines was a problem and may require the service of a periodontist.

Child↗

Impacted maxillary central incisor in mixed dentition treatment.

The impacted maxillary central incisor in a child poses a disturbing esthetic dilemma to parents, by virtue of its location. Neither the orthodontist nor the parents prefer to wait for the fully erupted permanent dentition and comprehensive orthodontics to resolve this problem. This challenge can be met in the early mixed dentition stage, as described with these two cases. The response to the technique was excellent. The patients now possess confidence to smile and have enhanced self-esteem, which is critical even in early life. Just as important is that the newly positioned maxillary central incisor is the natural tooth, not a temporary prosthesis that can loosen or break. Gingival contour is a consideration, however.

Child↗

Traumatically intruded teeth.

Various combinations of orthodontic force, luxation, and observation are applied to 12 teeth traumatically intruded in 3 large dogs. All showed root resorption to some degree. Early orthodontic repositioning, with luxation if immobile, produced the best recovery.

Animals↗