title: Two-body wear of occlusal splint materials.
abstract: This study investigates the wear resistance of four different types of occlusal splint materials based on two-body wear simulations under wet and dry conditions. Twenty specimens of each splint material (Dentalon Plus, Orthoplast, Biocryl C, and Eclipse), each with a diameter of 16 mm and a thickness of 3 mm, were tested, half under wet and half under dry conditions. Each wear test was performed using a device called chewing simulator CS-4 (n=10; test load: 50 N; number of cycles: 10000, 20000, and 30000; continuous rinsing with 30°C water for wet conditions); the antagonists were simulated using steel balls. Wear was determined using a 3D laser scanner and a surface analysis program. To detect significant statistical differences, wear data after 10000; 20000; and 30000 cycles were compared using the Kruskal-Wallis test and the Mann-Whitney U-test. The level of significance was set at 5%. Significant differences were found between the groups of different materials tested under wet conditions (P<0.05), whereas no differences between them were found under dry conditions (P>0.05). No significant difference was found between the wet and dry conditions for all materials and cycles (P>0.05). For groups of different materials tested under wet conditions, the degree of volume loss generated in the Chewing Simulator CS-4 was found to differ significantly for different numbers of cycles. The presence of water had no effect on the volume loss in the different material groups that were tested.
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, İstanbul University, Istanbul, Turkey.
authors.forename: H
authors.initials: H
authors.lastname: Kurt
authors.forename: K-J
authors.initials: KJ
authors.lastname: Erdelt
authors.forename: A
authors.initials: A
authors.lastname: Cilingir
authors.forename: E
authors.initials: E
authors.lastname: Mumcu
authors.forename: T
authors.initials: T
authors.lastname: Sülün
authors.forename: N
authors.initials: N
authors.lastname: Tuncer
authors.forename: W
authors.initials: W
authors.lastname: Gernet
authors.forename: F
authors.initials: F
authors.lastname: Beuer
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing / Q000379:methods*; D008689:Methacrylates / Q000737:chemistry; D017090:Occlusal Splints; D011108:Polymers / Q000737:chemistry; D013232:Steel; D013729:Terpenes / Q000737:chemistry
chemical_list: D000180:Acrylic Resins; D003188:Composite Resins; D003764:Dental Materials; C509237:Eclipse Prosthodontic Resin; D008689:Methacrylates; D011108:Polymers; D013729:Terpenes; C056843:Biocryl; D013232:Steel; C008715:orthoplast