EROSIVE AND ABRASIVE POTENTIALS OF SOFT DRINKS AND AIR POLISHING ON NANO-FILLED COMPOSITE RESIN | ||||
| Egyptian Dental Journal | ||||
| Article 19, Volume 62, Issue 1 - January (Part 5), January 2016, Page 1221-1229 PDF (337.11 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2016.96970 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Enas T. Enan | ||||
| Assistant Professor, Dental Biomaterials Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt | ||||
| Abstract | ||||
| introduction: Erosion is a common condition that is related to consumption of acidic food and drinks such as; carbonated drinks and fruit juices that might cause early deterioration of the dental restorations. Abrasion of dental restorations might result from physical factors such as tooth brushing or polishing. objective: This study aimed to assess the combined erosive potential of cola soft drink and orange juice, and the abrasive potential of air-polishing, on the surface of nano-filled composite resin restorations via evaluation of microhardness and surface roughness. materials and methods: A total of 60 specimens were prepared from nano-filled composite resin. Specimens were divided into 3 groups according to the immersion media (water, cola, orange juice), and each was further subdivided into 2 subgroups (unpolished or polished). Surface hard- ness was measured using a digital micro-hardness tester, and surface roughness was recorded using a profilometer. Data were analyzed by one-way analysis of variance (ANOVA) and Tukey’s post hoc test. results: A significant decrease in surface hardness was observed on immersion of nano-filled composite in either cola or orange juice. Except for the control group, the air-polished specimens had significantly higher surface hardness when compared to the unpolished ones. Cola and orange juice had a significant roughening effect on composite resin surface. Further increase in Ra values was recorded after air-polishing of both groups. Conclusion: Combining beverages immersion with air-polishing may have a profound effect on the surface deterioration of nano-filled composite resin | ||||
| Keywords | ||||
| Nano-filled composite; soft drinks; surface hardness and roughness | ||||
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