Repair of an Extensive External Cervical Resorption Lesion Using Intentional Replantation with Crown Rotation

Figure 4

Clinical images of the custom orthodontic hook used for extrusion and intentional replantation. Videos are available online at https://doi.org/10.6084/m9.figshare.20787508.v1 and https://doi.org/10.6084/m9.figshare.20787613.v1. (a) After root canal filling, the gingiva of the ECR lesion on the palatal side was removed with an electro-scalpel to access the hook for extrusion. (b) A question mark-shaped bending Co–Cr wire was placed in the root canal with carboxylate cement. (c) Bent Co–Cr wires were also bonded to both adjacent teeth with 4META-MMA/TBB resin. (d) The extrusion hook was removed immediately before intentional replantation. (e) Tooth extraction was carried out with forceps. (f) Root fit in the extraction socket was confirmed after crown rotation. (g) The ECR area was detected using a red dye (caries detector) marketed for caries treatment and visualized using a DOM. (h) A resin-based composite construction with a fibre post was used. (i) After the extraoral procedure, the rotated lateral incisor was replanted.

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