IP Indian Journal of Orthodontics and Dentofacial Research (IJODR) open access, peer-reviewed quarterly journal publishing since 2015 and is published under the Khyati Education and Research Foundation (KERF), is registered as a non-profit society (under the society registration act, 1860), Government of India with the vision of various accredited vocational courses in healthcare, education, paramedical, yoga, publication, teaching and research activity, with the aim of faster and better more...
Author Details :
Volume : 6, Issue : 4, Year : 2020
Article Page : 251-254
Mousetrap appliance is an effective treatment modality for anterior open bite that utilizes implants inserted
into the anterior palate and brings about open bite correction by intruding the maxillary molars. This is
a finite element study that assesses the stress contours around maxillary molars and in the periodontal
ligament of the maxillary molars when they are intruded by a mousetrap appliance.
Materials and Methods: A finite element model of the maxilla and the mousetrap appliance made of
288332 elements and 64771 nodes was generated using software tools like MIMICS and HYPERMESH.
A simulated force of 100 grams was applied to the maxillary molar through the appliance and the stress
contours were assessed.
Results: Maximum tensile stress was observed at furcation region of the PDL and was around 4.49e-3 MPa
(0.00449MPa) whereas maximum Von-Mises stress was observed at cervical region on both the lingual and
buccal side which was around 2.06e-2MPa (0.0206MPa).
Conclusion: It is therefore concluded that the mousetrap appliance which exerts a force within the range
of recommended force for molar intrusion generates stress contours around the maxillary molar and in the
periodontal ligament of the maxillary molar.
Keywords: TADs molar intrusion mousetrap appliance.
How to cite : Shah S, To evaluate stress patterns in the periodontal ligament of maxillary molars when intruded with a mousetrap appliance: A FEM study. IP Indian J Orthod Dentofacial Res 2020;6(4):251-254
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