Influence of anterior load and restorative procedure on maxillary incisors with different cervical wear morphologies

Authors

  • Alexandre Coelho Machado Universidade Federal de Uberlândia
  • Lívia Fávaro Zeola Universidade Federal de Uberlândia
  • Marina Ferreira de Lima Naves Universidade Federal de Uberlândia
  • Vitor Laguardia Guido Faria Universidade Federal de Uberlândia
  • Igor Oliveiros Cardoso Universidade Federal de Uberlândia
  • Paulo Vinicius Soares Universidade Federal de Uberlândia

DOI:

https://doi.org/10.14393/BJ-v34n5a2018-41974

Keywords:

Anterior Load, Composite Resin Restoration, Finite Element Analyses, Maxillary Incisors, Noncarious Cervical Lesions

Abstract

The aim of this study was to evaluate the influence of different anterior load type and restorative procedure on stress distribution of maxillary incisors with different noncarious cervical lesions (NCCLs) morphologies. Three-dimensional models of a maxillary incisor were generated. Beyond the sound model (SO), five NCCLs morphologies were simulated: shallow (SH), notched (NO), concave (CO), wedge-shaped (WS) and irregular with dual center (IR' and IR"). Composite resin restoration of all the models was simulated (R). Two different anterior loads were applied: 100N on palatine middle third (ML) and 500 N on palatine incisal third (IL). The data were obtained in MPa using the Maximum Principal Stress and Von Mises criteria and the statistical analysis was performed (paired t-test with 95% confidence level). The IL provided higher compressive stress than ML, mainly on WS (-136.3MPa), IR" (-117.5) and NO (-71.1 MPa). The highest tensile stress found within the restored models was on NOR with IL (19,1 MPa). The Von Mises results showed higher stress concentration on non-restored and IL models (p<0.001). The anterior load type and restorative status were determinant factors on stress distribution pattern changes, whereas NCCLs morphologies had little influence in maxillary incisors.

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Published

2018-10-11

How to Cite

MACHADO, A.C., ZEOLA, L.F., NAVES, M.F. de L., FARIA, V.L.G., CARDOSO, I.O. and SOARES, P.V., 2018. Influence of anterior load and restorative procedure on maxillary incisors with different cervical wear morphologies . Bioscience Journal [online], vol. 34, no. 5, pp. 1443–1454. [Accessed17 May 2022]. DOI 10.14393/BJ-v34n5a2018-41974. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/41974.

Issue

Section

Health Sciences