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CC BY-NC-ND 4.0 · Eur J Dent 2011; 05(02): 180-185
DOI: 10.1055/s-0039-1698877
Original Article
Dental Investigation Society

The Effect of Cavity Shape and Hybrid Layer on the Stress Distribution of Cervical Composite Restorations

Authors

  • Evrim Eliguzeloglu

    a   Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Yuzuncuyil University, Van, Turkey.

  • Oguz Eraslan

    b   Department of Prosthetic Dentistry, Faculty of Dentistry, Selcuk University, Konya, Turkey.

  • Huma Omurlu

    c   Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey.

  • Gurcan Eskitascioglu

    d   Department of Prosthetic Dentistry, Faculty of Dentistry, Yuzuncuyil University, Van, Turkey.

  • Sema Belli

    e   Department of Endodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey.
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Publikationsdatum:
30. September 2019 (online)

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ABSTRACT

Objectives: The aim of this finite elemental stress analysis study was to evaluate the effect of cavity shape and hybrid layer on the stress distribution of the mandibular premolar tooth under occlusal loading. Methods: The mandibular premolar tooth was selected as the model based on the anatomical measurements suggested by Wheeler. Four different mathematical models were evaluated: 1) a saucer-shaped non-carious cervical lesion restored with a composite without a hybrid layer, 2) a saucer-shaped non-carious cervical lesion restored with a composite with a hybrid layer, 3) a wedge-shaped non-carious cervical lesion restored with a composite without a hybrid layer, and 4) a wedge-shaped non-carious cervical lesion restored with a composite with a hybrid layer. A 200 N force was applied from the buccal tubercule and central fossa of the premolar tooth. The findings were drawn by the SAPLOT program. Results: In models 2 and 4, the output showed that a hybrid layer acts as a stress absorber. Additionally, when the cavity shape was changed, the stress distribution was very different. Conclusions: Cavity shape and hybrid layer play an important role in stress distribution in cervical restorations. (Eur J Dent 2011;5:180-185)

Key words:

Non-carious cervical lesion - Hybrid layer - Stress distribution - Finite element analysis - Premolar tooth
 

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