Autotransplantation of third molars with completely formed roots to replace compromised molars with the computer‐aided rapid prototyping

Abstract

Objective: To describe a method to fabricate donor tooth replica to assist surgeons in preparation of recipient socket during tooth autotransplantation. Materials and Methods: A total of 28 compromised molars in 27 patients were transplanted with third molars using computer-aided rapid prototyping (CARP) technique. Surgery time and extra-alveolar time were documented. Postoperatively, the distance between cervix of transplanted tooth and the alveolar wall was measured. The degree of postoperative pain experienced was assessed with visual analog scale at day 1, 3, and 7. Results: From 28 clinical cases, the average extra-alveolar time and surgery time were 2.5 minutes (±1.3) and 44 minutes (±6.8), respectively. Postoperatively, the average distance between cervix of transplanted tooth and the alveolar wall was 0.87 mm (±0.15) at the mesial-cervix, 0.95 mm (±0.17) at the distal-cervix, 0.88 mm (±0.18) at the buccal-cervix, and 0.95 mm (±0.13) at the lingual-cervix. The value of visual analog scale score significantly decreased from day 1 to day 3. Conclusions: CARP is a reliable technique for fabrication of tooth like surgical replicas in conventional autotransplantation. Clinical Significance: CARP technique minimized extra-oral time, reduced iatrogenic damage, and consequently increased the survival rate of tooth autotransplantation. K E Y W O R D S digital dentistry, endodontics, laboratory technology, oral surgery, pain

Rapid prototyping-assisted tooth autotransplantation is associated with a reduced root canal treatment rate: a retrospective cohort study

“…Several published case reports and case series have demonstrated the benefit of RP-assisted tooth autotransplantation [ 6 , 7 , 9 , 11 , 12 , 14 , 15 ]. Most of them are case reports, but 1 is a case–control study analysing RP-assisted autotransplantation in paediatric patients.…”

“…To obtain a satisfying outcome, efforts must be made to perform minimally traumatic surgical extraction and reduce the extra-alveolar time to more adeptly preserve Hertwig’s epithelial root sheath and pulp vitality [ 16 ]. Xia et al [ 14 ] reported that the average extra-alveolar time of their 28 CARP autotransplantation cases was 2.5 min. Kim et al [ 6 ] reported a total of 182 autotransplantation cases using the CARP technique, with an average extra-alveolar time of 7.58 min.…”

The use of 3D additive manufacturing technology in autogenous dental transplantation

“…Table 3 displays the 3D technique systems used in previous studies and the results obtained [ 11 , 34 – 51 ]. Although resin is normally used as printing material for the replicas, some researchers have recently reported the use of titanium or cobalt-chrome alloys to make metallic replicas in order to prevent the development of deformities during the sterilization process [ 34 , 48 ].…”

“…a.) Successful No signs of pathology NR less than 1 min 10 Kim et al [ 50 ] 2019 2 third molars Successful No signs of pathology NR 3 and 5 2–60 Xia et al [ 51 ] 2020 28 third molars Successful No signs of pathology SLA 1 to 5 Average: 2.5 24 Verweij et al [ 34 ] 2020 73 premolars 24 M - 3 others In 2016 98% Successful No signs of pathology DMLS 82% less than 1 min NR o. a. open apex, c. a. closed apex, NR Non-Registered, SLA Stereolithography Apparatus, Polyjet Material Jetting, SLM Selective Laser Melting, DMLS Direct Metal Laser Sintering …”

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

“…With recent advances in 3-dimensional (3D) printing technology in dentistry, the application of computer-aided rapid prototyping (CARP) to create a replica of the donor tooth in ATT has improved outcomes [ 6 , 7 ]. Using the CARP replica tooth to guide surgical preparation can reduce the extra-alveolar time of the viable donor tooth and minimize damage to PDL tissues.…”