Gottsauner, Maximilian and Morawska, Marta M. and Tempel, Simon and Mueuroller-Gerbl, Magdalena and Dalcanale, Federico and de Wild, Michael and Ettl, Tobias (2024) Geometric Cuts by an Autonomous Laser Osteotome Increase Stability in Mandibular Reconstruction With Free Fibula Grafts: A Cadaver Study. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY, 82 (2). pp. 235-245. ISSN 0278-2391, 1531-5053
Full text not available from this repository. (Request a copy)Abstract
Background: Nonunion and plate exposure represent a major complication after mandibular reconstruction with free fibula flaps. These drawbacks may be resolved by geometric osteotomies increasing intersegmental bone contact area and stability. Purpose: The aim of this study was to compare intersegmental bone contact and stability of geometric osteotomies to straight osteotomies in mandibular reconstructions with free fibula grafts performed by robot-guided erbium-doped yttrium aluminum garnet laser osteotomy. Study Design, Setting, Sample: This cadaveric in-vitro study was performed on fresh frozen human skull and fibula specimens. Computed tomography (CT) scans of all specimens were performed for virtual planning of mandibular resections and three-segment fibula reconstructions. The virtual planning was implemented in a Cold Ablation Robot-guided Laser Osteotome. Predictor/Exposure/Independent Variable: For predictor variables, straight and geometric puzzleshaped osteotomies were designed at resection of the mandible and corresponding fibula reconstruction. Main Outcome Variables: The primary outcome variable was the stability of the reconstructed mandible investigated by shearing tests. Moreover, secondary outcome variables were the duration of the laser osteotomies, the contact surface area, and the accuracy of the reconstruction, both evaluated on postsurgical CT scans. Covariates: Covariables were not applicable. Analyses: Data were reported as mean values (+ standard deviation) and were statistically analyzed using an independent-sample t-test at a significance level of a = 0.05. Root mean square deviation was tested for accuracy. Results: Eight skulls and 16 fibula specimens were used for the study. One hundred twelve successful laser osteotomies (96 straight and 16 geometrical) could be performed. Geometric osteotomies increased
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FREE-FLAP; ACCURACY; IMPLANTS; SURGERY; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Mund-, Kiefer- und Gesichtschirurgie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Jan 2026 07:58 |
| Last Modified: | 16 Jan 2026 07:58 |
| URI: | https://pred.uni-regensburg.de/id/eprint/64094 |
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