Clinical Evaluation of Silver Diamine Fluoride Combined with Potassium Iodide Versus Silver Diamine Fluoride in the Management of Class I Carious Lesions Over a Period of 12 Months Follow-up: A Randomized Controlled Clinical Trial

Mohamed, Shorouk Hisham; ElZoghbi, Amira Farid; Taher, Heba-Allah Mohamed; El-Kady, Dina Mounir

doi:10.21608/adjc.2025.334448.1667

Clinical Evaluation of Silver Diamine Fluoride Combined with Potassium Iodide Versus Silver Diamine Fluoride in the Management of Class I Carious Lesions Over a Period of 12 Months Follow-up: A Randomized Controlled Clinical Trial

Document Type : Original Article

Authors

¹ Conservative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt.

² Professor of Conservative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt.

³ Professor of Conservative Dentistry, Faculty of Dentistry, October University for Modern Sciences and Arts, Cairo, Egypt.

⁴ Lecturer of Conservative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt.

10.21608/adjc.2025.334448.1667

Abstract

Objective: This clinical trial was carried out to assess the clinical efficacy of silver diamine fluoride with or without potassium iodide before high-viscosity glass ionomer restoration compared to high-viscosity glass ionomer restoration for treating deep class I carious lesions over a one-year follow-up period.

Materials and methods: After partial caries removal, 42 deep class I cavities in permanent molars were allocated to one of the following groups: group 1, SDF+KI (Riva Star) (n=14); group 2, SDF (SDF, Riva Star step 1 only) (n=14); and both groups were followed by HVGI restoration (EQUIA Fil). Group 3, HVGI restorations (EQUIA Fil) (n=14). The restorations were assessed over a 12-month follow-up period using the FDI criteria. (postoperative hypersensitivity, radiographic examination, and patient’s view).

Results: There were no significant differences among the three materials regarding postoperative hypersensitivity or radiographic findings (P > 0.016). However, there were statistically significant differences in the patients’ views (P < 0.016). There was a 13-fold greater risk of unacceptable score 4 (clinically unsatisfactory) for the patients’ views with the SDF compared to HVGI after 12 months (P = 0.0712).

Conclusions: Applying HVGI alone or after SDF with or without KI could treat postoperative hypersensitivity in deep class I cavities after partial caries removal. Dentine treated with either SDF, SDF+KI, or HVGI could obtain successful radiographic outcomes with no signs of pulpal pathology. KI could be applied immediately after SDF to prevent black staining of the teeth and increase patient satisfaction.

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