Effects of different solutions on the surface hardness of composite resin materials.
In this study, the surface hardness of five light-cured composite resins were evaluated, namely: filled (Estelite), nanofil (AElite), unfilled (Valux Plus), hybrid (Tetric ceram), and Ormocer-based (Admira) composite resins. The microhardness values of composite specimens were measured at the top and bottom surfaces after 24 hours or 30 days of immersion in different solutions (tea, coffee, Turkish coffee, mouthwash, cola, and distilled water). Comparisons were made with univariate analysis of variance and Duncan's multiple range test. It was found that rough specimens of reinforced nano-hybrid composite material immersed in cola for 30 days had the lowest surface hardness (33.20), whereas rough specimens of hybrid composite material immersed in cola for 24 hours had the highest surface hardness (156.00). In both tea and coffee, the top surfaces tended to be harder than the bottom ones. In conclusion, the five different materials exhibited different hardnesses, and that the hardness values of composite materials were statistically different in different immersion solutions.
Yanikoğlu
Nuran
N
Department of Prosthodontics, School of Dentistry, Atatürk University, Erzurum, Turkey. ndinckal@atauni.edu.tr
Duymuş
Zeynep Yeşil
ZY
Yilmaz
Baykal
B
D001628:Beverages; D002253:Carbonated Beverages; D002516:Ceramics / Q000737:chemistry; D003069:Coffee; D003188:Composite Resins / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D006244:Hardness; D006801:Humans; D007101:Immersion; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D009067:Mouthwashes / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry; D063225:Organically Modified Ceramics; D012821:Silanes / Q000737:chemistry; D012833:Siloxanes / Q000737:chemistry; D012996:Solutions / Q000737:chemistry; D013499:Surface Properties; D013662:Tea; D013997:Time Factors; D014867:Water / Q000737:chemistry
C485363:Aelite LS; D003069:Coffee; D003188:Composite Resins; D003764:Dental Materials; C507124:Estelite sigma; D008689:Methacrylates; D009067:Mouthwashes; D063225:Organically Modified Ceramics; D012821:Silanes; D012833:Siloxanes; D012996:Solutions; D013662:Tea; C121818:Tetric ceram; C479084:admira; C112192:valux plus; D014867:Water