Microleakage of IPS Empress 2 Inlay Restorations Luted With Self-adhesive Resin Cements

Abstract

Although self-adhesive resin cements reduce the duration of the luting process, their universal practice requires caution because the microleakage performance of some brands is very poor. SUMMARYObjective: To assess the microleakage of three self-adhesive and one etch-and-rinse resin cements when luting IPS Empress 2 (Ivoclar Vivadent, Liechtenstein) all-ceramic inlay restorations to the prepared cavities in extracted human molars.Methods: The cylindrical Class V cavities were prepared on the buccal surfaces of 40 extracted human third molars using diamond burs. The IPS Empress 2 ceramic inlays were placed with Multilink Sprint (Ivoclar Vivadent), RelyX Unicem (3M ESPE, USA), G-Cem (GC, Japan), or Variolink II (Ivoclar Vivadent) as the control group. After storage in distilled water at 378C for 24 hours, samples were subjected to 1000 thermal cycles between baths of 58C and 558C, with a dwell time of 30 seconds. The microleakage scores were examined on the occlusal and gingival margins at 303 magnification after each sample was stained with 0.5% basic fuchsin and sectioned into three parts using a thin diamond blade (Isomet, Buehler, USA) (n=40). The extent of microleakage on both occlusal and gingival margins of the restorations was scored and recorded. The

Effect of adhesive system on retention in posts comprising fiber post and core resin

“…reported that micro-leakage increased in self-adhesive cement as a result of TC 31) . This suggests that selfadhesive cement is sensitive to water absorption and thermal stress.…”

Microleakage Of Composite Inlays Luted With Self-Adhesive Cements

“…Meanwhile, the use of SpeedCem produced significantly higher microleakage degree than Nexus 3. A recent study demonstrated that self-adhesive resin cements present higher microleakage scores than etch-and-rinse resin cement at enamel margins [36].…”

Coronal Microleakage of Teeth Restored with Cast Posts and Cores Cemented with Four Different Luting Agents after Thermocycling

“…However, due to the inherently weak acidic nature of these monomers, the smear layer would not be removed, and hybrid layer and resin plugs in dentinal tubules would not be developed . Besides, their high viscosity and short contact time with the tooth before polymerization contribute to their higher microleakage level . Furthermore, differences in thermal expansion coefficients of the resin luting agent and the tooth/metal causes stresses at their junction with a potential for water infiltration during thermocycling .…”

“…35,36 Besides, their high viscosity and short contact time with the tooth before polymerization contribute to their higher microleakage level. 36,37 Furthermore, differences in thermal expansion coefficients of the resin luting agent and the tooth/metal causes stresses at their junction with a potential for water infiltration during thermocycling. 38 Furthermore, the hydrolysis of the bonding agent at the interface due to heat of the water bath during thermocycling could lead to water leakage due to nonpolymerized monomers.…”