Abstract
The purpose of this study was to investigate the effects of Nd:YAG laser, air abrasion and acid-etching on the porcelain surface and repairment. Ten standard cylindrical specimens were made for each preparation (Finesse™ Dentsply). The specimens were lased for five seconds at a fluence of 80 mJ and a frequency of 20 Hz; air abraded for five seconds with 50 micron Al-oxide (at 60 psi); and acid etched with % 9,6 hydrofluoric acid for 120 seconds. The specimens were examined in the scanning electron microscopy (SEM) before and after the Nd:YAG laser, air abrasive and acid-etching. After silane coupling agent was applicated, two flowable restorative materials (Admira Flow™, Voco; Tetric Flow™, Vivadent) were bonded to the porcelain surfaces. Each group was stored in distilled water at 37°C for one day before the determination of shear bond strengths. A shear bond strength machine with 50 kg load cell and a 0.5 mm/min crosshead speed was used. The results were analyzed statistically. There was a significance between the shear bond strenth values of Admira Flow™ and Tetric Flow™ in the lased group (p<0.05).
| Original language | English |
|---|---|
| Pages (from-to) | 2039-2042 |
| Number of pages | 4 |
| Journal | Key Engineering Materials |
| Volume | 264-268 |
| Issue number | III |
| Publication status | Published - 2004 |
| Event | Proceedings of the 8th Conference and Exhibition of the European Ceramic Society - Istanbul, Turkey Duration: 29 Jun 2003 → 3 Jul 2003 |
Keywords
- Nd : YAG laser
- Porcelain
- Shear bond strength