Executive Editor: Edward Ellis III, Kazuo Shimozato General Editor: Daniel Buchbinder

Authors: J Andreasen, CP Cornelius, N Gellrich, S Hillerup, K Kusumoto, W Schubert

Dentoalveolar Trauma - Segmental alveolar fracture - Closed treatment

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Glossary

1 Principles top

The principles of closed reduction of an alveolar fractures are similar to those of the treatment of a lateral luxation, only the osseous injury is more extensive. Once the teeth are in alignment, the alveolar bone will automatically be repositioned. The subsequent interdental fixation enables fracture healing.

2 Reduction top

Repositioning of the tooth-bearing alveolus enlarge

If exposed, the root surface of the displaced teeth is cleansed with saline solution. The tooth-bearing alveolus is then repositioned with combined labial and lingual digital pressure until its normal position has been reestablished, indicated by alignment of the dental arch in proper occlusion. Strong force for reduction is usually required. In rare cases, forceps may be needed for reduction.

3 Fixation top

Fixation segmental alveolar fracture enlarge

Fixation is preferably accomplished with a resin splint attached to at least one neighboring intact tooth on each side of the vertical fracture lines.

Soft-tissue repair should precede the splinting of the teeth.

Involved teeth and neighboring healthy teeth are gently dried with compressed air or absolute alcohol and kept dry during the fixation procedure.

Care should be taken that compressed air and absolute alcohol are not allowed to enter the soft-tissue wound.


Etching procedure enlarge

Points of splint fixation on the repositioned teeth of the fractured alveolus and preferably two neighboring teeth on each side of the fragment are etched with phosphoric acid for 20 seconds.

Remember to place a suction tube to maintain dryness during etching procedure.


Removing of etch gel by saline irrigation enlarge

The etch gel is removed by saline irrigation. Make sure to direct the saline jet in a direction away from soft-tissue wounds and to place a suction tube to remove the spray of the saline and etch gel.

The fixation spots are then dried.

It is imperative that the enamel be kept dry until the resin has completely set.

A finger on the lingual aspect of the teeth can maintain fragment position during the fixation procedure.


enlarge

Resin material (eg, that used for temporary crowns and bridges) is applied to provide splinting. The resin material allows a certain flexibility of the splinting and is easy to remove.

Occlusion should be checked, no premature occlusal contacts are allowed.

Alveolar fractures should be fixed for 4 weeks.


Peeling off of the resin with a dental scaler enlarge

Removal of fixation device

After the fixation period (4 weeks), the resin can be peeled off with a dental scaler or removed with a burr. The teeth of the fractured segment of the jaw must be supported by digital pressure during this procedure.

v1.0 2009-12-03