25 August 2023

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CBCT segmentation, additive manufacturing for management of root canals with ledges

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CBCT assessment of a ledge could be useful to a clinician, however, utilizing this information effectively during a treatment procedure can be challenging.

Advanced additive manufacturing technologies combined with semi-automated segmentation of root canals can help simulate the ledge and help in management of these iatrogenic complications.

A patient presented after unsuccessful root canal treatment with a ledge on the left mandibular first molar. A CBCT was taken, and the images imported into a segmentation software (Mimics, Materialise).

The canal was isolated, and segmentation performed along with the other structures of the tooth. A 3D representation of the canal and the internal structures of the canal were exported from the software and additively manufactured.

This was used as a pre-clinical guide to simulate the procedure, pre-curve the file and manage the canal.

This novel technique using virtual modelling from CBCT data post ledge formation allowed for successful and quick management of a tooth with ledges.

Andrew B. Cameron et al. "CBCT segmentation and additive manufacturing for the management of root canals with ledges: A case report and technique." Journal of Endodontics. 12 August 2023. DOI:https://doi.org/10.1016/j.joen.2023.08.002