en pediatric pediatric Original article Original article <div style="text-align: justify;"><span style="font-size:13pt"><span style="line-height:105%"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:9.0pt"><span style="line-height:105%"><span style="font-family:" verdana=""><span style="color:#2e74b5">Background and Aim</span></span></span></span></b><b><span style="font-size:9.0pt"><span style="line-height:105%"><span style="font-family:" verdana=""><span style="color:#2e74b5">:</span></span></span></span></b> <span style="font-size:9.0pt"><span style="line-height:105%"><span style="font-family:" verdana="">This study aimed to spectrophotometrically compare the color change (&Delta;E) of white spot lesions (WSLs) after the application of ICON and Cobalt resin infiltrants. &nbsp;</span></span></span>&nbsp;</span></span></span><br> <span style="font-size:13pt"><span style="line-height:105%"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:9.0pt"><span style="line-height:105%"><span style="font-family:" verdana=""><span style="color:#2e74b5">Materials and Methods: </span></span></span></span></b><span style="font-size:9.0pt"><span style="line-height:105%"><span style="font-family:" verdana="">In this in vitro study, WSLs were artificially induced in 20 extracted sound human premolars by their 7-day immersion in a demineralizing solution with a pH of 4.4. The specimens were randomly assigned to two groups (n=10) for resin infiltration treatment with ICON and Cobalt resin infiltrants. The color parameters of the specimens were measured before the intervention (T0), after demineralization (T1), immediately after treatment (T2), and 4 weeks after treatment (T3) spectrophotometrically by using the CIEL*a*b* system. &Delta;E values were calculated and analyzed by independent t-test (alpha=0.05). </span></span></span>&nbsp;&nbsp;</span></span></span><br> <span style="font-size:13pt"><span style="line-height:105%"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:9.0pt"><span style="line-height:105%"><span style="font-family:" verdana=""><span style="color:#2e74b5">Results: </span></span></span></span></b><span style="font-size:9.0pt"><span style="line-height:105%"><span style="font-family:" verdana=""><span style="color:#0e101a">In comparison of &Delta;E2-0, the difference was not statistically significant between ICON and Cobalt (P=0.234). In comparison of &Delta;E2-1, ICON (&Delta;E=12.78) showed a significantly better coverage than Cobalt (&Delta;E=7.25) (P=0.004). In comparison of &Delta;E3-2, ICON (&Delta;E =4.79) showed higher color stability than Cobalt (&Delta;E=5.24), but the difference was not significant (P=0.667).</span></span></span></span><span style="font-size:9.0pt"><span style="line-height:105%"><span style="font-family:"Verdana",sans-serif"></span></span></span></span></span></span><br> <span style="font-size:13pt"><span style="line-height:105%"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:9.0pt"><span style="line-height:105%"><span style="font-family:" verdana=""><span style="color:#2e74b5">Conclusion:</span></span></span></span></b> <span style="font-size:9.0pt"><span style="line-height:105%"><span style="font-family:" verdana=""><span style="color:#0e101a">The results of this study showed that both ICON and Cobalt effectively corrected the color of WSLs to match the color of sound enamel, although ICON showed a slightly superior performance. The two resin infiltrants also had a comparable color stability after 4 weeks.</span></span></span></span></span></span></span><br> &nbsp;</div> Color, Dental Caries, Dentition, Permanent, Spectrophotometry 148 155 http://jrdms.dentaliau.ac.ir/browse.php?a_code=A-10-2828-1&slc_lang=en&sid=1 Fahimeh Khodabandehlou fahime.khodabandelou@iau.ac.ir 100319475328460016930 100319475328460016930 No Dentist in private practice, Tehran, Iran Sara Zahedi Rad Sara.Zahedi@iautmu.ac.ir 100319475328460016931 100319475328460016931 No Department of Pediatric Dentistry, TeMS.C., Islamic Azad University, Tehran, Iran Mandana Alamdari Mahd mandanaalamdari@iau.ac.ir 100319475328460016932 100319475328460016932 Yes Department of Pediatric Dentistry, TeMS.C., Islamic Azad University, Tehran, Iran