Objective: To evaluate micro-leakage of indirect resin composite inlay lutedto dentin after specimen's storage in distilled water and lactic acid.
Materials and Methods: Standardized MOD Class II cavities were prepared in 48 intact human molars and restored with SR Nexco resin composite inlay restorations. The specimens were assigned into three sets (n=16) according to the luting resin cement used; group I: (etch-and-rinse (Variolink N), group II: self-etch (Panavia F2.0) and group III: self-adhesive (RelyXUnicem)). Each set was subdivided into two equal subsets (n=8) relative to the storage media either distilled wateror lactic acid. Half of the specimens of each subset were stored in each storage medium for 24h while the other half was stored for 168h (7 days).
Results: There was significant difference (p<0.05) between all types of resin cement tested. Variolink N resin cement revealed the highest scores of dye pentration, followed by RelyXUnicem, then Panavia F2.0. In general, results showed, there was high significant difference (p<0.05) between both of storage media.
Conclusion:Micro-leakage showed good results with SE luting resin cement strategy.association implying the importance of ruling out NTM in bronchiectasis patients.