Mostrar el registro sencillo del ítem

dc.contributor.authorPuricelli, Edelapt_BR
dc.contributor.authorFonseca, Jun Sergio Onopt_BR
dc.contributor.authorParis, Marcel Fasolo dept_BR
dc.contributor.authorSant'Anna, Hervandil Morosinipt_BR
dc.date.accessioned2010-05-05T04:15:46Zpt_BR
dc.date.issued2007pt_BR
dc.identifier.issn1746-160Xpt_BR
dc.identifier.urihttp://hdl.handle.net/10183/21541pt_BR
dc.description.abstractBackground: Surgical orthopedic treatment of the mandible depends on the development of techniques resulting in adequate healing processes. In a new technical and conceptual alternative recently introduced by Puricelli, osteotomy is performed in a more distal region, next to the mental foramen. The method results in an increased area of bone contact, resulting in larger sliding rates among bone segments. This work aimed to investigate the mechanical stability of the Puricelli osteotomy design. Methods: Laboratory tests complied with an Applied Mechanics protocol, in which results from the Control group (without osteotomy) were compared with those from Test I (Obwegeser-Dal Pont osteotomy) and Test II (Puricelli osteotomy) groups. Mandible edentulous prototypes were scanned using computerized tomography, and digitalized images were used to build voxel-based finite element models. A new code was developed for solving the voxel-based finite elements equations, using a reconditioned conjugate gradients iterative solver. The Magnitude of Displacement and von Mises equivalent stress fields were compared among the three groups. Results: In Test Group I, maximum stress was seen in the region of the rigid internal fixation plate, with value greater than those of Test II and Control groups. In Test Group II, maximum stress was in the same region as in Control group, but was lower. The results of this comparative study using the Finite Element Analysis suggest that Puricelli osteotomy presents better mechanical stability than the original Obwegeser-Dal Pont technique. The increased area of the proximal segment and consequent decrease of the size of lever arm applied to the mandible in the modified technique yielded lower stress values, and consequently greater stability of the bone segments. Conclusion: This work showed that Puricelli osteotomy of the mandible results in greater mechanical stability when compared to the original technique introduced by Obwegeser-Dal Pont. The increased area of the proximal segment and consequent decrease of the size of lever arm applied to the mandible in the modified technique yield lower stress values and displacements, and consequently greater stability of the bone segments.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofHead & Face Medicine [recurso eletrônico]. London. Vol. 3, (3 November 2007), 7 p.pt_BR
dc.rightsOpen Accessen
dc.subjectCirurgia bucalpt_BR
dc.subjectCirurgia : Mandibulapt_BR
dc.titleApplied mechanics of the Puricelli osteotomy : a linear elastic analysis with the finite element methodpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000628659pt_BR
dc.type.originEstrangeiropt_BR


Ficheros en el ítem

Thumbnail
   

Este ítem está licenciado en la Creative Commons License

Mostrar el registro sencillo del ítem