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Erschienen in: Clinical Oral Investigations 3/2016

01.04.2016 | Original Article

Restorative material and loading type influence on the biomechanical behavior of wedge shaped cervical lesions

verfasst von: Fabrícia Araújo Pereira, Livia Fávaro Zeola, Giovana de Almeida Milito, Bruno Rodrigues Reis, Rodrigo Dantas Pereira, Paulo Vinícius Soares

Erschienen in: Clinical Oral Investigations | Ausgabe 3/2016

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Abstract

Objectives

To evaluate the influence of restorative materials used on the rehabilitation of MOD cavities and loading type, on biomechanical behavior of wedge-shaped (WS) lesions in endodontically treated maxillary premolars. The investigation was conducted by 3D finite element analysis (FEA) and strain gauge test.

Materials and methods

Six models were generated, with MOD cavities and endodontic treatment: A (MOD amalgam restoration), R (MOD composite restoration), AL (A + cervical lesion (L)), RL, ALR (A + cervical lesion restored with composite (LR)), and RLR. Each model underwent two compressive loading (100N): axial and oblique—45° angle to the long axis on the buccal cusp. The models were analyzed by von Mises criteria. For strain gauge test, 14 standardized maxillary premolars were treated according to the groups described for FEA. Two strain gauges were bonded on each sample submitted to compressive loading in a mechanical testing machine.

Results

A presented higher stress concentration and strain values than R. Oblique loading promoted highest stress concentration and strain rates for all groups. ALR and RLR presented similar stress–strain distribution pattern when compared to A and R.

Conclusion

The interaction between MOD cavity restored with amalgam and oblique loading propitiated the highest stress concentration and strain values on cervical region and WS lesion.

Clinical relevance

The MOD cavity restored with composite resin is a better option than amalgam to improve the biomechanical behavior of wedge-shaped lesion, avoiding dental failure. In addition, the occlusal interferences must be removed, allowing homogeneous contact distribution and preventing WS lesion progression.
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Metadaten
Titel
Restorative material and loading type influence on the biomechanical behavior of wedge shaped cervical lesions
verfasst von
Fabrícia Araújo Pereira
Livia Fávaro Zeola
Giovana de Almeida Milito
Bruno Rodrigues Reis
Rodrigo Dantas Pereira
Paulo Vinícius Soares
Publikationsdatum
01.04.2016
Verlag
Springer Berlin Heidelberg
Erschienen in
Clinical Oral Investigations / Ausgabe 3/2016
Print ISSN: 1432-6981
Elektronische ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-015-1523-3

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