Mohammed Alharbi1, Ra'fat Farah2. 1. Dentist, Dentistry General Department, Ministry of Health, Qassim, Kingdom of Saudi Arabia. 2. Assistant Professor, Department of Prosthodontics, College of dentistry, Qassim University, Kingdom of Saudi Arabia.
Abstract
BACKGROUND: The purpose of this in vitro study was to investigate the effects of water-jet flossing on the color stability and surface roughness of five resin-based composites. MATERIAL AND METHODS: Five commercially available composite resins were studied. Nine disc-shaped specimens (6x2mm) were fabricated from each composite. The specimens were randomly allocated into three groups and three different treatments were performed on each group: storage in water (control group), water-jet flossing using 50 Psi water pressure, and water-jet flossing using 100 Psi water pressure. The water-jet flossing was performed in a standardized manner using a Waterpik® Aquarius® water flosser. Color and roughness were measured at baseline and at the end of 30 minutes of treatment, which is approximately equivalent to 5 years of simulated water-jet flossing for 1 minute once a day. The data were statistically analyzed using two-way analysis of variance (ANOVA) with Bonferroni and Tukey's post-hoc tests. RESULTS: No significant color change was found after 5 simulated years of water-jet flossing, irrespective of composite type and water-flossing pressure setting (p > 0.05). Furthermore, none of composite specimens showed any significant surface roughness changes except for the two composites with spherical filler specimens in the 100 Psi treatment group. These composites exhibited a significant increase in surface roughness compared with the nano-filled composite (p = 0.001 and p = 0.006). However, the differences were clinically acceptable (≈0.2 µm). CONCLUSIONS: In terms of surface roughness and color, water-jet flossing is safe to be used on composite restorations within the settings of this study. Key words:Color difference (∆E), resin composites, surface roughness, water flosser. Copyright:
BACKGROUND: The purpose of this in vitro study was to investigate the effects of water-jet flossing on the color stability and surface roughness of five resin-based composites. MATERIAL AND METHODS: Five commercially available composite resins were studied. Nine disc-shaped specimens (6x2mm) were fabricated from each composite. The specimens were randomly allocated into three groups and three different treatments were performed on each group: storage in water (control group), water-jet flossing using 50 Psi water pressure, and water-jet flossing using 100 Psi water pressure. The water-jet flossing was performed in a standardized manner using a Waterpik® Aquarius® water flosser. Color and roughness were measured at baseline and at the end of 30 minutes of treatment, which is approximately equivalent to 5 years of simulated water-jet flossing for 1 minute once a day. The data were statistically analyzed using two-way analysis of variance (ANOVA) with Bonferroni and Tukey's post-hoc tests. RESULTS: No significant color change was found after 5 simulated years of water-jet flossing, irrespective of composite type and water-flossing pressure setting (p > 0.05). Furthermore, none of composite specimens showed any significant surface roughness changes except for the two composites with spherical filler specimens in the 100 Psi treatment group. These composites exhibited a significant increase in surface roughness compared with the nano-filled composite (p = 0.001 and p = 0.006). However, the differences were clinically acceptable (≈0.2 µm). CONCLUSIONS: In terms of surface roughness and color, water-jet flossing is safe to be used on composite restorations within the settings of this study. Key words:Color difference (∆E), resin composites, surface roughness, water flosser. Copyright:
Authors: Catherine O'Neill; Laurent Kreplak; Frederick A Rueggeberg; Daniel Labrie; Carlos Alberto Kenji Shimokawa; Richard Bengt Price Journal: J Esthet Restor Dent Date: 2017-12-05 Impact factor: 2.843