Abstract:
:This study aimed to introduce a procedure for determining the bilinear elastic moduli (E1 and E2) of the periodontal ligament for a mathematical tooth model to analyse stress in the mandible. The bone and tooth morphology were scanned from a dry skull and an extracted intact tooth, respectively, and reconstructed in a three-dimensional finite element model. The model showed good agreement with previously reported in vivo premolar movement when an E1 for the first phase tooth movement of 0.05 MPa and an E2 for the second phase of 8.0 MPa with ε(12) of 0.075 were adopted. The mandible model analysis indicated that a remarkably high maximum compressive stress in the cervical cortical bone and the tensile stress in areas of masticatory muscle attachment were found. Future stress analyses using a jaw model may follow the process of determination of bilinear moduli to enhance accurate simulation with less calculation time.
journal_name
Dent Mater Jjournal_title
Dental materials journalauthors
Borák L,Florian Z,Bartáková S,Prachár P,Murakami N,Ona M,Igarashi Y,Wakabayashi Ndoi
10.4012/dmj.2010-170subject
Has Abstractpub_date
2011-01-01 00:00:00pages
448-54issue
4eissn
0287-4547issn
1881-1361pii
JST.JSTAGE/dmj/2010-170journal_volume
30pub_type
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