DC FieldValueLanguage
dc.contributor.authorSteffen, Claudius-
dc.contributor.authorSellenschloh, Kay-
dc.contributor.authorWillsch, Magdalena-
dc.contributor.authorSoares, Ana Prates-
dc.contributor.authorMorlock, Michael-
dc.contributor.authorHeiland, Max-
dc.contributor.authorKreutzer, Kilian-
dc.contributor.authorHuber, Gerd-
dc.contributor.authorRendenbach, Carsten-
dc.date.accessioned2023-03-14T08:48:13Z-
dc.date.available2023-03-14T08:48:13Z-
dc.date.issued2023-02-24-
dc.identifier.citationJournal of the Mechanical Behavior of Biomedical Materials 140: 105742 (2023-04-01)de_DE
dc.identifier.issn1878-0180de_DE
dc.identifier.urihttp://hdl.handle.net/11420/14994-
dc.description.abstractBackground: Patient-specific 3D-printed miniplates for free flap fixation in mandibular reconstruction were recently associated with enhanced osseous union. Higher mechanical strains resulting from these plates are discussed as reasons, but biomechanical studies are missing. This study aims to examine, whether patient-specific 3D-printed miniplates provide an increased interosteotomy movement (IOM) and lower stiffness compared with reconstruction plates. Methods: Polyurethane (PU) mandible and fibula models (Synbone AG, Malans, Schweiz) were used to simulate mandibular reconstruction with a one segment fibula flap equivalent. Osteosynthesis was performed using either four patient-specific 3D-printed miniplates (3D-Mini) or one patient-specific 3D-printed reconstruction plate (3D-Recon). Mastication was simulated using cyclic dynamic loading with increasing loads until material failure or a maximum load of 1000 N. Continuous IOM recording was carried out using a 3D optical tracking system (ARAMIS, Carl Zeiss GOM Metrology, Braunschweig, Germany). Findings: The averaged stiffness at a load of 100–300 N load did not differ between the groups (p = 0.296). There was a faster 1.0 mm vertical displacement in the 3D-Mini group (26 376 ± 14 190 cycles versus 44 817 ± 30 430 cycles, p = 0.018). The IOM were higher with miniplate fixation in the distal gap (p = 0.040). In the mesial gap, there was no significant difference between the groups (p = 0.160). Interpretation: Fixation with patient-specific 3D-printed miniplates results in higher mechanical strains. Lower rates of pseudarthrosis, as seen in clinical studies, might be caused by this phenomenon. Surgeons should evaluate the primary use of 3D-printed miniplates in mandibular reconstruction due to advantages of intraoral plate removal alongside safe osteosynthesis.en
dc.language.isoende_DE
dc.publisherElsevierde_DE
dc.relation.ispartofJournal of the mechanical behavior of biomedical materialsde_DE
dc.subjectBiomechanicsde_DE
dc.subjectFibula free flapde_DE
dc.subjectMandibular reconstructionde_DE
dc.subjectOsteosynthesisde_DE
dc.subjectPatient-specific implantsde_DE
dc.subject.ddc570: Biowissenschaften, Biologiede_DE
dc.subject.ddc600: Technikde_DE
dc.titlePatient-specific miniplates versus patient-specific reconstruction plate: a biomechanical comparison with 3D-printed plates in mandibular reconstructionde_DE
dc.typeArticlede_DE
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.abstract.englishBackground: Patient-specific 3D-printed miniplates for free flap fixation in mandibular reconstruction were recently associated with enhanced osseous union. Higher mechanical strains resulting from these plates are discussed as reasons, but biomechanical studies are missing. This study aims to examine, whether patient-specific 3D-printed miniplates provide an increased interosteotomy movement (IOM) and lower stiffness compared with reconstruction plates. Methods: Polyurethane (PU) mandible and fibula models (Synbone AG, Malans, Schweiz) were used to simulate mandibular reconstruction with a one segment fibula flap equivalent. Osteosynthesis was performed using either four patient-specific 3D-printed miniplates (3D-Mini) or one patient-specific 3D-printed reconstruction plate (3D-Recon). Mastication was simulated using cyclic dynamic loading with increasing loads until material failure or a maximum load of 1000 N. Continuous IOM recording was carried out using a 3D optical tracking system (ARAMIS, Carl Zeiss GOM Metrology, Braunschweig, Germany). Findings: The averaged stiffness at a load of 100–300 N load did not differ between the groups (p = 0.296). There was a faster 1.0 mm vertical displacement in the 3D-Mini group (26 376 ± 14 190 cycles versus 44 817 ± 30 430 cycles, p = 0.018). The IOM were higher with miniplate fixation in the distal gap (p = 0.040). In the mesial gap, there was no significant difference between the groups (p = 0.160). Interpretation: Fixation with patient-specific 3D-printed miniplates results in higher mechanical strains. Lower rates of pseudarthrosis, as seen in clinical studies, might be caused by this phenomenon. Surgeons should evaluate the primary use of 3D-printed miniplates in mandibular reconstruction due to advantages of intraoral plate removal alongside safe osteosynthesis.de_DE
tuhh.publisher.doi10.1016/j.jmbbm.2023.105742-
tuhh.publication.instituteBiomechanik M-3de_DE
tuhh.type.opus(wissenschaftlicher) Artikel-
dc.type.driverarticle-
dc.type.casraiJournal Article-
tuhh.container.volume140de_DE
dc.identifier.scopus2-s2.0-85149176236de_DE
tuhh.container.articlenumber105742de_DE
local.status.inpressfalsede_DE
datacite.resourceTypeArticle-
datacite.resourceTypeGeneralJournalArticle-
item.openairetypeArticle-
item.mappedtypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.cerifentitytypePublications-
item.creatorOrcidSteffen, Claudius-
item.creatorOrcidSellenschloh, Kay-
item.creatorOrcidWillsch, Magdalena-
item.creatorOrcidSoares, Ana Prates-
item.creatorOrcidMorlock, Michael-
item.creatorOrcidHeiland, Max-
item.creatorOrcidKreutzer, Kilian-
item.creatorOrcidHuber, Gerd-
item.creatorOrcidRendenbach, Carsten-
item.grantfulltextnone-
item.fulltextNo Fulltext-
item.languageiso639-1en-
item.creatorGNDSteffen, Claudius-
item.creatorGNDSellenschloh, Kay-
item.creatorGNDWillsch, Magdalena-
item.creatorGNDSoares, Ana Prates-
item.creatorGNDMorlock, Michael-
item.creatorGNDHeiland, Max-
item.creatorGNDKreutzer, Kilian-
item.creatorGNDHuber, Gerd-
item.creatorGNDRendenbach, Carsten-
crisitem.author.deptBiomechanik M-3-
crisitem.author.deptBiomechanik M-3-
crisitem.author.deptBiomechanik M-3-
crisitem.author.orcid0000-0003-4221-4878-
crisitem.author.orcid0000-0002-5330-2454-
crisitem.author.orcid0000-0002-4987-2913-
crisitem.author.orcid0000-0002-9883-3953-
crisitem.author.orcid0000-0002-9565-7640-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
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