Periodontal ligament preloading and rapid prototyping of the donor tooth in the autotransplantation of premolars with complete root formation

Lim, Seung-Weon; Choi, In-Sun; Lee, Bin-Na; Ryu, Jaeyoung; Park, Hong-Ju; Cho, Jin-Hyoung

doi:10.1016/j.ajodo.2021.01.039

Cited by 1 publication

(1 citation statement)

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“…Distinct from an osseointegrated dental implant, the viable PDL healing endows the transplanted tooth with physiological mobility, better periodontal margin, and function eruption ability resembling a natural tooth. Hence, ATT has broad indications for adolescents and adults with orthodontic requirements [ 16 ]. Mehrangiz et al reported autotransplantation of tooth #28 with the missing #35 and subsequent orthodontic treatment, which eliminated the need for implants or prosthetic therapy.…”

Section: Discussionmentioning

confidence: 99%

Combined Application of Virtual Simulation Technology and 3-Dimensional-Printed Computer-Aided Rapid Prototyping in Autotransplantation of a Mature Third Molar

et al. 2022

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The use of computer-aided rapid prototyping (CARP) models was considered to reduce surgical trauma and improve outcomes when autotransplantation of teeth (ATT) became a viable alternative for dental rehabilitation. However, ATT is considered technique-sensitive due to its series of complicated surgical procedures and unfavorable outcomes in complex cases. This study reported a novel autotransplantation technique of a 28-year-old patient with an unrestorable lower first molar (#36) with double roots. Regardless of a large shape deviation, a lower third molar (#38) with a completely single root formation was used as the donor tooth. ATT was performed with a combined use of virtual simulation, CARP model-based rehearsed surgery, and tooth replica-guided surgery. A 3D virtual model of the donor and recipient site was generated from cone-beam computed tomographic (CBCT) radiographs prior to surgery for direct virtual superimposition simulation and CARP model fabrication. The virtual simulation indicated that it was necessary to retain cervical alveolar bone during the surgical socket preparation, and an intensive surgical rehearsal was performed on the CARP models. The donor tooth replica was used during the procedure to guide precise socket preparation and avoid periodontal ligament injury. Without an additional fitting trial and extra-alveolar storage, the donor tooth settled naturally into the recipient socket within 30 s. The transplanted tooth showed excellent stability and received routine root canal treatment three weeks post-surgery, and the one-year follow-up examination verified the PDL healing outcome and normal functioning. Patient was satisfied with the transplanted tooth. This cutting-edge technology combines virtual simulation, digital surgery planning, and guided surgery implementation to ensure predictable and minimally invasive therapy in complex cases.

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Section: Discussionmentioning

confidence: 99%