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CC BY-NC-ND 4.0 · Eur J Dent 2009; 03(03): 200-206
DOI: 10.1055/s-0039-1697432
Original Article
Dental Investigation Society

Effect of Thermo-mechanical Load Cycling on Microleakage in Class II Ormocer Restorations

Autor*innen

  • Dina Erdilek

    a   Dr, Department of Operative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey

  • Can Dörter

    b   Associate Professor, Department of Operative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey

  • Fatma Koray

    c   Professor, Department of Operative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey

  • Karl-Heinz Kunzelmann

    d   Professor, Department of Restorative Dentistry and Periodontology, Ludwig-Maximilians-University, Munich, Germany

  • Begum Guray Efes

    b   Associate Professor, Department of Operative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey

  • Yavuz Gomec

    b   Associate Professor, Department of Operative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
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Publikationsverlauf

Publikationsdatum:
27. September 2019 (online)

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ABSTRACT

Objectives: The objective of this in vitro study was to evaluate the marginal sealing ability of an ormocer in comparison with a hybrid composite when using thermocycling and load cycling procedures together in the study design.

Methods: Modified proximal Class II cavities were prepared on the mesial and distal surfaces of twenty-two human premolars. Each tooth was restored with Admira and contralaterally with TPH Spectrum. Half of all of the teeth were subjected to thermo-mechanical load cycling. After dye penetration, longitudinal sections in mesio-distal direction were prepared and examined under a stereomicroscope. Data were analyzed with Mann Whitney U test.

Results: The results showed that the thermo-mechanical load cycling caused a statistically significant increase in gingival microleakage when compared with the non-thermocycled and nonloaded restorations for both the materials Admira (P=0.006) and TPH Spectrum (P=0.023).

Conclusions: Simultaneous load cycling and thermocycling are decisive factors in the in vitro assessment of gingival microleakage, which still remains to be a clinical problem even with the ormocer system Admira. (Eur J Dent 2009;3:200-206)

Key words:

Ormocer - Microleakage - Load cycling - Thermocycling
 

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