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CC BY 4.0 · Eur J Dent 2022; 16(03): 528-535
DOI: 10.1055/s-0041-1735435
Original Article

Influence of the Inclination of the Incisal Edge of Planas Direct Tracks on Deciduous Dentition with Anterior Crossbite: Finite-Elements Study

Gabriel Ribeiro de Matos
1   São Leopoldo Mandic Dental School, Campinas, São Paulo, Brasil
,
Ruben Ribeiro Neto
2   Mechanical Engineering, EMEC, Jundiaí, Brazil
,
Almiro José Machado Júnior
3   Department of Otorhinolaryngology, Head and Neck Surgery, University of Campinas, Campinas, São Paulo, Brazil
,
Rui Barbosa Brito Junior
1   São Leopoldo Mandic Dental School, Campinas, São Paulo, Brasil
› Author Affiliations Funding None.
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Abstract

Objective This study aimed to evaluate the influence of three different inclinations of the incisal edge of Planas direct tracks (PDTs) on the upper deciduous incisors (15, 30, and 45 degrees) through simulations using the finite-elements method.

Materials and Methods A three-dimensional virtual model of tooth 51 was elaborated by using the Rhinoceros computer-aided design (CAD) software. A mesh was constructed by using the Patran software, and the evaluations were processed by using the ANSYS 15.0 software. The geometry of the elements used consisted of a triangular-base tetrahedron composed of 2,167,386 elements and 3,012,995 nodal points.

Results Progressive alterations of proportional intensity and distribution were seen in the areas of tension on the dentoalveolar structures, with increasing inclination of the edge of the PDT. The tractive contact tensions were seen to be concentrated in the vestibular apical thirds and palatine cervical thirds, while the compressive contact tensions were in the palatine apical thirds and vestibular cervical thirds.

Conclusion It was concluded that a 30-degree inclination for the PDT was most appropriate for the cases of anterior crossbite in the deciduous dentition. Nevertheless, because this was a laboratory evaluation, clinical criteria and complementary examinations for each case need to be taken into consideration in making therapeutic decisions.

Keywords

malocclusion - crossbite - deciduous dentition - prognathism


Publication History

Article published online:
30 November 2021

© 2021. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).

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