TAILIEUCHUNG - Repair bond strength of dual-cured resin composite core buildup materials

The reparability of dual-cured resin composite core buildup materials using a light-cured one following one week or three months storage, prior to repair was evaluated. Two different dual-cured resin composites; Cosmecore DC automix and Clearfil DC automix core buildup materials and a light-cured nanofilled resin composite; Filtek Z350 XT were used. Substrate specimens were prepared (n = 12/each substrate material) and stored in artificial saliva at 37 C either for one week or three months. Afterward, all specimens were ground flat, etched using Scotchbond phosphoric acid etchant and received Single Bond Universal adhesive system according to the manufacturers’ instructions. The light-cured nanofilled resin composite (Filtek Z350 XT) was used as a repair material buildup. To determine the cohesive strength of each solid substrate material, additional specimens from each core material (n = 12) were prepared and stored for the same periods. Five sticks ( ± mm2 ) were obtained from each specimen (30 sticks/group) for microtensile bond strength (lTBS) testing. Modes of failure were also determined. Two-way ANOVA revealed a significant effect for the core materials but not for the storage periods or their interaction. After one week, dual-cured resin composite core buildup materials (Cosmecore DC and Clearfil DC) achieved significantly higher repair lTBS than the light-cured nanofilled resin composite (Filtek Z350 XT). However, Clearfil DC revealed the highest value, then Cosmecore DC and Filtek Z350 XT, following storage for 3-month. Repair strength values recovered 64–86% of the cohesive strengths of solid substrate materials. The predominant mode of failure was the mixed type. Dual-cured resin composite core buildup materials revealed acceptable repair bond strength values even after 3- month storage. | Repair bond strength of dual-cured resin composite core buildup materials

• Vật lý
• Artificial saliva storage
• Bond strength
• Dual cured
• Core buildup
• Resin composite
• Methacrylate based resin composite
• Silorane based resin composite
• Surface roughness
• Adhesive system on repair potential
• Epoxy resin
• Copper powder
• Conductive glue
• Electrical contact
• Copper metal powder
• Epoxy resin mixture
• Tạp chí y học
• Nghiên cứu y học
• Độ bền dán composite resin
• Men răng sau tẩy trắng bằng carbamide peroxide
• Tẩy trắng răng
• Intrapulpal pressure
• Intrapulpal temperature
• Low shrinking resin composite
• Microtensile bond strength
• Dentin microtensile bond strength
• Luận án Tiến sĩ
• Theoretical chemistry
• Physical chemistry
• Nanosilica reinforced epoxy resin
• Glass fiber E
• Composite material based
• Composite material
• UPE resin
• Coffee husk
• Gel time
• Post curing
• Mechanical properties
• Glass fiber
• Fire retardant additives
• Unsaturated polymer resin
• Antimony trioxide
• Chlorinated paraffin
• Kevlar fabric
• Fragment Simulating Projectiles
• Designing personal helmets
• Body armor
• Thermal protection material
• Ablative composites
• Phenolic resin
• Carbon black
• Phenolic matrix composite
• Structural mass irregularities
• Cotton fiber
• Polymeric composite
• Matrix composites
• Hybrid composite using alumina
• Graphene and epoxy
• Existing epoxy resin
• Forth information regarding
• Multitude of composites