In vitro validated finite element method model for a human skull and related craniofacial effects during rapid maxillary expansion

Provatidis, C; Georgiopoulos, B; Kotinas, A; MacDonald, JP

dc.contributor.author	Provatidis, C	en
dc.contributor.author	Georgiopoulos, B	en
dc.contributor.author	Kotinas, A	en
dc.contributor.author	MacDonald, JP	en
dc.date.accessioned	2014-03-01T01:24:30Z
dc.date.available	2014-03-01T01:24:30Z
dc.date.issued	2006	en
dc.identifier.issn	0954-4119	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17294
dc.subject	Displacement analysis	en
dc.subject	Finite element	en
dc.subject	Human skull	en
dc.subject	In vitro test	en
dc.subject	Rapid maxillary expansion	en
dc.subject	Stress analysis	en
dc.subject.classification	Engineering, Biomedical	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Bone	en
dc.subject.other	Computer simulation	en
dc.subject.other	Computerized tomography	en
dc.subject.other	Finite element method	en
dc.subject.other	Mathematical models	en
dc.subject.other	Stress relaxation	en
dc.subject.other	Craniofacial effect	en
dc.subject.other	Displacement analysis	en
dc.subject.other	Human skull	en
dc.subject.other	Rapid maxillary expansion	en
dc.subject.other	Biomechanics	en
dc.subject.other	adolescent	en
dc.subject.other	article	en
dc.subject.other	biological model	en
dc.subject.other	child	en
dc.subject.other	computer assisted therapy	en
dc.subject.other	computer simulation	en
dc.subject.other	dental care	en
dc.subject.other	elasticity	en
dc.subject.other	evaluation	en
dc.subject.other	finite element analysis	en
dc.subject.other	human	en
dc.subject.other	in vitro study	en
dc.subject.other	maxilla	en
dc.subject.other	mechanical stress	en
dc.subject.other	methodology	en
dc.subject.other	orthodontics	en
dc.subject.other	pathophysiology	en
dc.subject.other	skull	en
dc.subject.other	validation study	en
dc.subject.other	Adolescent	en
dc.subject.other	Child	en
dc.subject.other	Computer Simulation	en
dc.subject.other	Dental Stress Analysis	en
dc.subject.other	Elasticity	en
dc.subject.other	Finite Element Analysis	en
dc.subject.other	Humans	en
dc.subject.other	Maxilla	en
dc.subject.other	Models, Biological	en
dc.subject.other	Palatal Expansion Technique	en
dc.subject.other	Skull	en
dc.subject.other	Stress, Mechanical	en
dc.subject.other	Therapy, Computer-Assisted	en
dc.title	In vitro validated finite element method model for a human skull and related craniofacial effects during rapid maxillary expansion	en
heal.type	journalArticle	en
heal.identifier.primary	10.1243/09544119JEIM92	en
heal.identifier.secondary	http://dx.doi.org/10.1243/09544119JEIM92	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	This paper presents the biomechanical effects on the craniofacial complex during rapid maxillary expansions (RME), by using an in vitro experiment compared with a three-dimensional (3D) finite element model of a human skull. For this purpose, a dry human skull with artificially constructed teeth was used. In addition, a 3D finite element model including the craniofacial sutures was developed based on computed tomography (CT) scans. Initially, two types of models were analysed. In the first model, the total activation of the jackscrew device was applied in one step. In the second model, more steps were applied, taking into account the phenomenon of stress relaxation during RME treatment. Afterwards, a parametric analysis of the finite element method model was performed using three more models in order to evaluate the influence of craniofacial sutures. Both in vitro and finite element results refer to the openings of four critical points (MI, UM, EM, and CN) on the left and right maxilla. Results show that the maxillae open in a pyramidal shape and that the degree of sutures ossification influences the displacement distribution on the craniofacial complex much more than the phenomenon of stres relaxation. The areas of the maximum stresses and displacements were also determined. © IMechE 2006.	en
heal.publisher	PROFESSIONAL ENGINEERING PUBLISHING LTD	en
heal.journalName	Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine	en
dc.identifier.doi	10.1243/09544119JEIM92	en
dc.identifier.isi	ISI:000243121100010	en
dc.identifier.volume	220	en
dc.identifier.issue	8	en
dc.identifier.spage	897	en
dc.identifier.epage	907	en