ผลของการเปลี่ยนแปลงอุณหภูมิและแรงเชิงกลต่อความแข็งแรงล้าต่อแรงดัด และการรั่วซึมของไททาเนียมยึดกับเนื้อฟันโดยใช้สารปรับสภาพผิวโลหะต่างชนิด / ศิริกุล เตชะนรราช = The effect of thermal and mechanical cycling on flexural fatigue strength and microleakage of titanium bonded to dentin using different metal conditioners / Sirikul Techanoraraj
To evaluate the titanium-dentin bonded properties when using different resin cements and metal conditioners under thermal and mechanical cycling Methods Dentin-titanium were bonded using resin cements (SuperbondC&B® or PanaviaF2.0®) and metal conditioners (Metafast Bonding Liner® or Alloy Primer®). For flexural-fatigue-test, loading cycles (6.0N, 2.0Hz, three-point bending set-up) until specimen breakdown were recorded, with/without thermocycling. For Dyepenetration- test, specimens were investigated under mechanical cycling (6.0N, 2.0 Hz, 20,000cycles) and thermocycling, using basic fuchsin dye. Results Dentin treated with Alloy Primer®and adhered with SuperbondC&B® showed the highest loading-cycles before failure and the lowest dye-penetration distance. The data was analyzed with 3-way ANOVA at 95 % confidence level. Type of cements and thermocycling process effect the flexural fatigue strength. The dye penetration test yielded similar results. There was no statistically significant difference when using a different metal conditioners. Conclusion Using different metal conditioners did not affect the bonding properties between dentin and titanium. Thermocycling decreased the bonding properties between dentin and titanium. This study suggests SuperbondC&B® could provide a better dentin-titanium bond than that of PanaviaF2.0