| Autor: |
Afnan O. Al-Zain, Elaf A. Alboloshi, Walaa A. Amir, Maryam A. Alghilan, Eliseu A. Münchow |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Saudi Dental Journal, Vol 34, Iss 3, Pp 243-248 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1013-9052 |
| DOI: |
10.1016/j.sdentj.2022.01.004 |
| Popis: |
This study explores the effects of aging (thermal cycling and cyclic loading–TC/CL) and different light-curing unit (LCU) types on the volume characteristics and internal porosity of a bulk-fill resin-based composite restoration. Occlusal cavities (4 × 4 × 3 mm) were prepared on extracted human molars (n = 5). Tetric N-Bond Universal was applied, and the cavities were restored using Tetric-N-Ceram Bulk Fill. Photoactivation was performed using a quartz-tungsten halogen (QTH) or a multiple-emission peak light-emitting diode (MLED). Digital images for all restorations were obtained using microcomputed tomography (micro-CT) before (baseline) and after (post-aging) TC/CL (5,000 TC cycles in 5–55 °C baths and a dwell time of 30 s followed by 10,000 sinusoidal CL load cycles in an Instron B3000 at 2 Hz and 10–110 N) and storage (37 °C) for three months. For the micro-CT analysis, three-dimensional images were used to determine the restoration volume and internal porosity. Data were analyzed using a two-way ANOVA and Tukey’s test (p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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