IADR Abstract Archives
Dentin Discoloration and Ions Penetration into Pulp Following SDF-KI Treatment
Objectives: The penetration of ions through dentin in topical application of silver diamine fluoride (SDF) might affect pulpal health. The objective of this in vitro study was to evaluate the effects of SDF application followed by potassium iodide (KI) on dentin discoloration and ions penetration into the pulp chamber.
Methods: Proximal surfaces of extracted one-rooted human teeth were polished to obtain flat cervical dentin, and each tooth was fixed to a test tube. The specimens were distributed into 4 groups: SDF (Advantage Arrest, Elevate Oral Care); SDF with KI (SSKI, Upsher-Smith); RV-SDF (Riva Star, SDI); and RV-SDF-KI. The products were wiped using a cotton swab. The CIE L*a*b* color value at each cervical site was assessed using chromameter (CR200, Konica-Minolta) at baseline, after 2min, 10min and 24h, and ΔE compared to baseline was calculated. The water-filled tube was inverted to collect the ions that had penetrated from the tooth surface into the pulp chamber. The concentration of F was measured using fluoride ion-selective and reference electrodes (Orion, Thermo Scientific) at 1, 2, 7 and 14 days.
Results: Dentin in SDF-KI groups showed no visual change in color whereas the groups using only SDF exhibited gradual staining. Repeated-measures ANOVA showed that time and treatment and their interaction had a significant effect on color change (p<0.001). ΔE at 2min and 24h for SDF-KI (2.68±3.49 and 4.05±2.66) and RV-SDF-KI (2.75±2.51 and 4.11±3.38) were significantly lower compared with SDF (3.87±2.84 and 28.05±7.96) and RV-SDF (6.80±4.22 and 25.31±7.40) (p<0.001). Similarly, fluoride concentrations at Day1 and Day14 for SDF-KI (0.18±0.09 and 0.23±0.09) and RV-SDF-KI (0.17±0.01 and 0.21±0.03) were significantly lower compared with SDF (0.25±0.04 and 0.27±0.06) and RV-SDF (0.24±0.05 and 0.28±0.03) (p<0.05).
Conclusions: Application of KI after SDF treatment could significantly reduce dentin staining. The precipitation of AgI followed by application of KI decreased the penetration of fluoride ions into the pulp chamber.
Methods: Proximal surfaces of extracted one-rooted human teeth were polished to obtain flat cervical dentin, and each tooth was fixed to a test tube. The specimens were distributed into 4 groups: SDF (Advantage Arrest, Elevate Oral Care); SDF with KI (SSKI, Upsher-Smith); RV-SDF (Riva Star, SDI); and RV-SDF-KI. The products were wiped using a cotton swab. The CIE L*a*b* color value at each cervical site was assessed using chromameter (CR200, Konica-Minolta) at baseline, after 2min, 10min and 24h, and ΔE compared to baseline was calculated. The water-filled tube was inverted to collect the ions that had penetrated from the tooth surface into the pulp chamber. The concentration of F was measured using fluoride ion-selective and reference electrodes (Orion, Thermo Scientific) at 1, 2, 7 and 14 days.
Results: Dentin in SDF-KI groups showed no visual change in color whereas the groups using only SDF exhibited gradual staining. Repeated-measures ANOVA showed that time and treatment and their interaction had a significant effect on color change (p<0.001). ΔE at 2min and 24h for SDF-KI (2.68±3.49 and 4.05±2.66) and RV-SDF-KI (2.75±2.51 and 4.11±3.38) were significantly lower compared with SDF (3.87±2.84 and 28.05±7.96) and RV-SDF (6.80±4.22 and 25.31±7.40) (p<0.001). Similarly, fluoride concentrations at Day1 and Day14 for SDF-KI (0.18±0.09 and 0.23±0.09) and RV-SDF-KI (0.17±0.01 and 0.21±0.03) were significantly lower compared with SDF (0.25±0.04 and 0.27±0.06) and RV-SDF (0.24±0.05 and 0.28±0.03) (p<0.05).
Conclusions: Application of KI after SDF treatment could significantly reduce dentin staining. The precipitation of AgI followed by application of KI decreased the penetration of fluoride ions into the pulp chamber.
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