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 - Tooth luxation with displacement - Lateral luxation

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Glossary

1 Decision/Indication top

The displaced tooth needs to be repositioned as soon as possible to normalize occlusion, to enable optimal pulpal healing, and to permit fast periodontal healing.

2 Repositioning top

Locked apex in its displaced position enlarge

If exposed, the root surface of the displaced tooth should be cleansed with saline solution. The tooth is repositioned with axial digital pressure until its normal position has been reestablished.

In some cases, as shown in this illustration, the apex of the tooth is locked in its displaced position. In such cases, repositioning will involve a movement of the tooth in direction out of its socket (1) before the axial digital pressure (2) makes it click into its proper position.

3 Fixation top

Teeth drying with compressed air enlarge

Drying

Fixation is preferably accomplished with acid etch of the incisal enamel and application of a resin splint involving intact neighboring teeth. The teeth involved are gently dried with compressed air (as illustrated) or absolute alcohol and kept dry during the fixation procedure.

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


Points of fixation are etched with phosphoric acid enlarge

Etching

Points of fixation in the repositioned tooth as well as neighboring teeth are etched with phosphoric acid for 20 seconds.

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


Etch gel removement by saline irrigation enlarge

Cleansing

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.


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Application of resin material

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

In cases of lateral luxation, fixation should generally be maintained for 4 weeks (due to the associate bone fracture).

Note: the patient should be put on soft diet for 2 weeks. Exposure to temperature extremes should be avoided.

Note: care has to be taken that there is no occlusal loading to the affected tooth.


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Splint removal

After the fixation period (four weeks) the resin can be peeled off with a dental scaler or removed with a burr. The tooth must be supported by axial digital pressure during this procedure.

v1.0 2009-12-03