In recent years, resin-based composites (RBCs) have become more widely used. Wear and consequently the increased surface roughness of composite resins and color change are among the causes of restoration failure.
Aim:
the current in vitro study investigated wear resistance and color stability of nano hybrid composite resin (M0), self-cured alkasite material (M1), and dual cured alkasite material (M2).
Materials and Methods:
60 resin composite discs were fabricated and divided equally for the two performed tests. wear resistance was performed through evaluation of its surface roughness by optical profilometer before (C0) and after (C1) chewing simulation. Color stability assessment of was performed by immersion of samples in distilled water (S0) and tea (S1). Base line values of all samples (T0) were recorded using the CIELAB system by spectrophotometer device. The samples were measured after storage for three-time intervals to obtain Lab values (one day (T1), one week (T2) and one month (T3).
Results:
(M1) showed the highest surface roughness values followed by (M2), meanwhile (M0) showed the least values with significant difference between them (p < .001). Also, the results revealed that (M0) showed the least ∆E values followed by (M2). Meanwhile, (M1) revealed the highest value with significant difference between them after one day. However, no significant difference between (M0) and (M2) after one week and one month (p < .001).
Conclusion:
Wear resistance and color stability of dual cured bulk fill alkasite material is comparable that of nanohybrid composite resin and considered clinically acceptable.
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