Investigation of the effect of impacted third molar position and orientation on bad split fractures in sagittal split ramus osteotomy using finite element analysis

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dc.contributor.authorUstundag, Irfan
dc.contributor.authorMecu, Erkan
dc.contributor.authorCetiner, Yunus
dc.contributor.authorSimsek, Mehmet Sait
dc.date.accessioned2026-04-04T13:33:06Z
dc.date.available2026-04-04T13:33:06Z
dc.date.issued2025
dc.departmentİnönü Üniversitesi
dc.description.abstractBackground This study aims to evaluate the impact of different angular orientations and buccolingual positions of impacted third molars on the incidence of bad splits during sagittal split ramus osteotomy using finite element analysis. Materials and methods A total of 12 mandibular models were constructed, each representing a unique combination of third molar orientations (vertical, distoangular, horizontal, mesioangular) and positions (buccal, lingual, central). A force of 20 N was applied from the osteotomy line toward the proximal and distal segments to simulate the working principle of the Smith Spreader instrument. Results The maximum principal stress followed the order: vertical > distoangular > horizontal > mesioangular. In terms of positional stress distribution, the buccal position generated the highest stress, followed by lingual and central positions. Similar trends were observed across all stress criteria evaluated. Conclusion The orientation and position of impacted third molars have a direct effect on the risk of bad splits during SSRO. Mesioangular and centrally positioned teeth were associated with lower stress levels, indicating lower risk, while vertically oriented and buccally or lingually positioned molars showed significantly higher stress concentrations. Thus, extraction of high-risk impacted third molars prior to surgery is recommended to reduce the likelihood of complications.
dc.description.sponsorshipScientific Research Projects Coordination Unit of Inonu University [TSA-2025-4246]
dc.description.sponsorshipThis study was supported by the Scientific Research Projects Coordination Unit of Inonu University (Project Number: TSA-2025-4246).
dc.identifier.doi10.1186/s13005-025-00574-x
dc.identifier.issn1746-160X
dc.identifier.issue1
dc.identifier.orcid0009-0000-2003-9816
dc.identifier.pmid41398681
dc.identifier.scopus2-s2.0-105029009395
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1186/s13005-025-00574-x
dc.identifier.urihttps://hdl.handle.net/11616/108929
dc.identifier.volume22
dc.identifier.wosWOS:001674311500001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherBmc
dc.relation.ispartofHead & Face Medicine
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250329
dc.subjectBad split
dc.subjectImpacted tooth
dc.subjectSagittal split ramus osteotomy
dc.subjectFinite element analysis
dc.titleInvestigation of the effect of impacted third molar position and orientation on bad split fractures in sagittal split ramus osteotomy using finite element analysis
dc.typeArticle

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