Authors of section

Editors

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

Executive Editors

Edward Ellis III, Kazuo Shimozato

General Editor

Daniel Buchbinder

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Repositioning and fixation

1. Decision/Indication

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

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.

Locked apex in its displaced position

3. Fixation

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.

Teeth drying with compressed air

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.

Points of fixation are etched with phosphoric acid

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.

Etch gel removement by saline irrigation

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.

tooth fracture root fracture

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.

repositioning and fixation

4. Aftercare following treatment of lateral luxation

Aftercare may include endodontic treatment. The decision for endodontic treatment may be taken after 2 to 6 months of follow-up if the tooth still does not respond to electrometric or thermal pulp testing and/or if x-rays show a periapical radiolucency or the crown becomes discolored.

Diet
Patients are encouraged to restrict themselves to a semi-solid diet and avoid clenching and any other traumatic overload to the traumatized tooth for a period of 1 or 2 weeks posttrauma.

Further treatment
Further dental treatment may be completed as an elective procedure in a dental office, for example management of discoloration, cosmetic correction, porcelain restoration, etc.