Presentation Category
Research
Introduction/Context/Diagnosis
To evaluate the effect of four polishing methods on the surface gloss of a composite.
Methods/Treatment Plan
A total of thirty disks of composite Filtek Supreme Ultra B1(3M) were made and light cured for 40s using Elipar S10(3M). The disks were sanded to a uniform surface finish using 320 grid SiC paper. Specimens were assigned randomly to 5 groups(n=6) where four groups received a polishing finish. 1.Control group (no treatment), 2. Rockstar system(BIOCLEAR), 3. Soflex mylar discs(3M)-ASAP Wheels(Clinician’s-choice), 4. Minnow MCOMP blue and white (Henry-Schein-Dental), 5. Brownie/Greenie (Patterson-Dental) followed by bristle brush (Dental-Ventures-of-America) impregnated with CompoDotz medium (Patterson-Dental) followed by linen buff without any material(Dental-Ventures-of-America). Groups 2 to 5 have been polished for a total working time of 6 min. Samples were mounted and sputter coated with a 10 nm Au/Pd coat using an SC7620 Mini Sputter Coater by Quorum Technologies. Images were captured using a Zeiss EVO 50 Scanning Electron Microscope at 500x. Surface analysis was done using Image J 1.53k NIH, USA software. The ratio of the polished surface versus the less polished surface on a distinguished gray scale was determined based on the SEM images. ANOVA-ONE-WAY and Bonferoni-corrected t-test was used for statistical analysis.
Results/Outcome
All polishing methods showed statistically significant better polished surfaces compared to the control samples(p≤0.05). Among the polishing groups no significant differences were found except for the Rockstar group vs Minnow MCOMP group(p=0.006). The most polished surface area was seen in Rockstar(2.1),followed by ASAP(1.8),followed by Greenie/Brownie(1.6),followed by Minnow MCOMP(1.5).
Significance/Conclusions
In this study all polishing methods have been used on the same composite Filtec Supreme for better comparisons. The outcome might be different for different composites. All methods exhibited a high surface gloss when examined with the naked eye. This SEM study filtered out a difference between two commercially available polishing methods.
Format
Event
In-Vitro Composite Surface Analysis Using Foru Polishing Systems A SEM STUDY
To evaluate the effect of four polishing methods on the surface gloss of a composite.
Comments/Acknowledgements
Dr. Karen Schulze, Dr. Patrick Roetzer, Scott Davis