Rotation axis of the maxillary molar and maximum tooth movement according to force direction
Braz. j. oral sci
;
14(2): 130-134, Apr.-June 2015. tab, ilus
Article
in English
| LILACS
| ID: lil-755040
ABSTRACT
Aim:
To evaluate the correlation between the maxillary molar rotation center and the direction of the maximum tooth movement according to the force direction using three-dimensional finite element analysis (3D-FEA)Methods:
Computed tomography of a human tooth was used to build a finite element model, which comprised the cancellous and cortical bones, the periodontal ligament and the tooth. After applying lateral and posterior boundary conditions, a 1 N force was applied to the mesial and lingual faces of the maxillary molar to simulate buccal and distal tipping forces on the tooth.Results:
The initial displacement of the maxillary first molar was greater for distal tipping than for buccal tipping. The rotation axis for distal tipping in this simulation was located on the furcation of the first molar. For buccal tipping this axis was on the cervical and middle third of the buccal roots of the maxillary first molar.Conclusions:
The applied movement interferes in molars Cres location. Higher molar tipping is expected when distal movement is applied rather than buccal movement thanks to the close distance between Cres and location of the force applied to this movement.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Tooth Movement Techniques
/
Biomechanical Phenomena
/
Tomography, X-Ray Computed
/
Finite Element Analysis
Limits:
Humans
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2015
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Estadual de Campinas/BR
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