INFLUENCE OF DIFFERENT BLEACHING SYSTEMS ON THE BOND STRENGTH OF LAMINATE VENEER TO ENAMEL
| Autor: | Ali Riza Tuncdemir, Filiz Aykent, Haluk Baris Kara, Ozgun Yusuf Ozyilmaz |
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| Přispěvatelé: | ÖZYILMAZ, ÖZGÜN YUSUF |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Enamel paint Bond strength medicine.medical_treatment Tooth surface ÖZYILMAZ Ö. Y. AYKENT F. TUNÇDEMİR A. R. KARA H. B. -INFLUENCE OF DIFFERENT BLEACHING SYSTEMS ON THE BOND STRENGTH OF LAMINATE VENEER TO ENAMEL- International Journal of Clinical and Biomedical Research cilt.4 ss.1-6 2018 Laser law.invention stomatognathic diseases medicine.anatomical_structure stomatognathic system law visual_art Dentin medicine visual_art.visual_art_medium Veneer Maxillary central incisor Ceramic Composite material |
| Popis: | Purpose: The objective of this in-vitro study was to examine the microtensile bond strength of a porcelain laminate veneer (PLV) to tooth surface bleached with photoactivation by blue light-emitting diode (LED) or diode laser. Methods: Eigthteen extracted human central incisors were randomly divided into three groups. Two sticks were obtained from each tooth (n=12). Before surface treatments; teeth were prepared to provide space for PLVs. The first group teeth were bleached with Whiteness HP which is contain 35% hydrogen peroxide (HP) and then photoactivated with a LED for 20 seconds. The second group were bleached with Laserwhite 20 which is contain 46% HP and photoactivated with a diode laser for 30 seconds. The third group received no surface treatment and served as the control group. IPS Esthetic ceramic veneers were luted with Variolink II veneer cement . The teeth were sectioned to obtain porcelain-resin-enamel/dentin sticks and submitted to a MTB testing device. The maximum load at fracture was recorded. Data were analyzed using one-way ANOVA followed by the Tukey HSD post-hoc test at a preset α of 0.05. Results: One-way ANOVA revealed that there was significant difference between LED unit group and control group (p.05) The LED unit group presented significantly lower bond strength value (6.49±2.3 MPa) than diode laser (8.49 ±3.1 MPa) and control groups (9.53±2.7 MPa). Conclusion: The results suggested that bleaching therapy with activation by LED or diode laser reduced the bond strength of IPS Esthetic ceramic veneers to tooth surfaces. Keywords: Teeth Bleaching; Photoactivation; Semiconductor lasers; Diode laser; Microtensile. |
| Databáze: | OpenAIRE |
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