Saudi Cultural Missions Theses & Dissertations
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Item Restricted Effect of Silver Diamine fluoride Containing Potassium Iodide and Nano-Hydroxyapatite on Shear Bond Strength of Nano-Hybrid Composites(2022) Alawad, Fahad; Bottino, MarcoObjective: This in-virto study evaluated the effect of applying DHS treatments on immediate and long-term shear bond-strength (SBS) of nano-hybrid composite restorations. Method: Ninety non-carious extracted human molars were embedded in acrylic resin. Teeth were randomly divided into 3 main groups (n=30), according to surface treatment: 1) no treatment (control), 2) silver diamine fluoride with potassium iodide (Riva Star) and 3) nano- hydroxyapatite (PrevDent). Each group received universal adhesive followed by cylindrical composite restorations. Groups were divided into 2 sub-groups according to the time of test: 1) immediate (24 hours after the restoration) and 2) thermocycled (5000 cycles, 5°C to 55°C). Specimens were tested using a universal testing machine. Stereomicroscope was used to evaluate the mode of failure. One-way analysis of variance (ANOVA) followed by Tukey post hoc with 95 percent significance were preformed to evaluate the data. Result: The highest mean value was recorded in control immediate group (27.10 MPa) and the lowest was in SDF/KI thermocycled group (6.87 MPa). A statistically significant difference was found between the values of all groups except between nHAp immediate and control thermocycled. For control and nHAp groups majority of specimens had mixed failure, while adhesive failure was recorded among SDF/KI groups. Conclusion: The application of SDF/KI prior to bonding reduces the SBS under the minimum bond strength to resist contraction forces of resin composite materials, and the SBS values of nHAp application prior to bonding meets the minimum required bond strength to resist contraction forces of resin composite, 17-20 MPa.39 0Item Restricted The Effectiveness of Silver Diamine Fluoride (SDF) on Caries Lesions in Adults: retrospective study evaluating the longevity of SDF treated teeth in adult patients using a dental school data record(2025) Al Saffer, Ala; Kolker, JustineSilver diamine fluoride (SDF) is used to treat dental caries lesions on primary teeth in children and have been found effective. Adults may also benefit from the use of SDF in treating exposed initial root caries lesions, yet such studies are lacking. The aim of this retrospective study was to determine the factors related to longevity of adult patients’ teeth after SDF treatment. Methods: Data from the University of Iowa College of Dentistry data base (AxiUm) were used for this study. Patients aged 18 years and older with one or more code D1354 between 2016 and 2021 were included. Patient variables included: age, gender, race, number of medications, smoking status, insurance status, and number of D1354 codes overall. Tooth variables included: tooth number, number of D1354 codes applied on the tooth, and subsequent treatment (restoration, root canal treatment, extraction). Operator variables included: provider type (student, post-grad, faculty) and type of clinic (geriatric vs. other). The dependent outcome variable was survival defined as not needing subsequent treatment. Statistical software was used to calculate chi-square values used for analyses to determine relationship between variables and survival. Results: Results included 1772 patients with 2985 SDF treated teeth. Patients that had significantly higher failure (p <.001 to <.05) with tobacco use. Teeth with crowns prior to SDF treatment had higher chance of failure. Multiple applications of SDF had higher chances of not failing.32 0