Abstract
Abstract
Purpose
To evaluate the influence of different cariostatic agents: 38% silver diamine fluoride (SDF), 38% SDF + potassium iodide (RS), and nano silver fluoride (NSF) compared with distilled water (control), on the surface roughness and color change of CAD–CAM‐milled restorative materials: nanoceramic resin (NR), feldspathic ceramic (FC), and lithium disilicate ceramic (LD).
Materials and Methods
Thirty‐two specimens of each material were fabricated and allocated into four experimental groups (
n
= 8). The specimens underwent repeated applications of the cariostatic agents (3 min, repeated six times) and were evaluated for surface roughness (∆Ra) by profilometry and for color change using a digital spectrophotometer, with analysis based on the CIEDE2000 system (∆
E
00
). Data were analyzed using two‐way analysis of variance (ANOVA), followed by one‐way ANOVA or Kruskal–Wallis tests with appropriate post hoc comparisons and Bonferroni correction (
α
= 0.05).
Results
A statistically significant interaction was observed between restorative material type and the applied cariostatic agent. SDF produced the greatest increases in roughness, especially in LD (∆Ra = 0.232) and FC (∆Ra = 0.126), compared with the control group (
p
E
00
= 30.56–45.72;
p
E
00
= 0.28–0.75) and increased roughness in the FC. NSF showed behavior similar to the control group in terms of roughness and maintained color‐change values within acceptable limits (∆
E
00
= 0.57–1.35).
Conclusions
SDF may compromise the surface roughness and color change of CAD–CAM‐milled restorative materials, whereas NSF and RS show potential as more favorable alternatives for the evaluated outcomes.