| Autor: |
Graf, Tobias, Völler, Elisabeth, Schweiger, Josef, Smmelmayr, Michael, Güth, Jan-Frederik, Erdelt, Kurt-Jürgen |
| Předmět: |
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| Zdroj: |
International Journal of Prosthodontics; 2024, Vol. 37 Issue 5, pe223-e227, 5p |
| Abstrakt: |
Purpose: To evaluate the behavior of hybrid abutment crowns fabricated from monolithic lithium disilicate ceramic (LDC) and to compare the influence of different in vitro ar>ficial aging protocols. Materials and Methods: A total of 32 monolithic hybrid abutment crowns of monolithic LDC were fabricated. Of these, 24 were ar>ficially aged using three different protocols up to a 20 year simula>on (1.2 × 106, 2.4 × 106, 4.8 × 106 chewing cycles, thermocycling), a control group underwent no ar>ficial aging (n = 8, N = 32). Load-to-failure tests were conducted for all specimens, and failure values were compared (P < .05). Results: All specimens passed in vitro aging. Mean failure load values between 532.6 and 562.8 N were found but did neither differ significantly among the test groups nor from the control group. Conclusions: Within the limita>ons of this in vitro pilot study, hybrid abutment crowns manufactured from monolithic LDC seem to offer appropriate long-las>ng mechanical stability over a simula>on period up to 20 years. The failure values and complica>on paTern seem to b e independent of several aging protocols in this test set-up. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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