JournalTOCs

Acta Odontologica Turcica
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This is an Open Access Journal

Open Access journal
ISSN (Online) 2147-690X
Published by Gazi Üniversitesi

[9 journals]

Color change, water sorption and solubility of two types of denture liners
incorporated with carbon nanoparticles
- Authors: Ayşe Seda ATAOL; Gulfem ERGUN, Melis ALAS, Rükan GENC ALTURK
  Abstract: Objective: The aim of this manuscript was to investigate the effect of carbon nanoparticles (CNs) addition into denture liners on the color change and water absorption and solubility.Materials and Method: Test specimens (n=10) of Visco-Gel (Group VG) and Ufi-Gel (Group UG) were created either without (Groups C-as control and W) or with the incorporation of 0.5%, 1% and 10% CNs synthesized from licorice root plant. The size of the CNs were measured with dynamic light scattering. The color of each specimen was measured with a spectrophotometer. Water sorption and solubility were determined by weight measurement. The data were analyzed by two-way ANOVA for sample size estimation and Mann-Whitney U and Kruskal-Wallis tests for analyses of main outcomes with significance at the p<0.05 level.Results: All CNs-added test groups showed statistically higher color change than control groups (p<0.0125). In Group UG, 10% CNs added test groups showed statistically higher water sorption and solubility values than Group C, W and 0.5% CNs added test groups (p<0.001). However, the addition of 0.5% and 1% CNs to Groups VG caused a statistical decrease in water sorption values compared to control groups and Group VG 10% (p<0.001). Conclusion: Color change of CNs added denture liners were not within clinically accepted range of color difference regardless of addition rate. CNs addition in tested denture liners promoted changes in the liners’ sorption/solubility. UG was more prone to increase in both water sorption and solubility than VG.
  PubDate: Sun, 01 May 2022 00:00:00 +030
Fluoride and the internet: an assessment of online information available
to the public
- Authors: Pınar KINAY TARAN; Meltem BAKKAL, Narmin MAMMADLİ
  Abstract: Objective: Obtaining information online in health-related issues is becoming increasingly important among patients and parents. Parents are concerned about their children's fluoride use and tend to search on the internet. In this regard, the aim of this study is to assess the reliability, quality, accessibility, and readability of websites giving information on fluoride treatment. Materials and Method: Two search terms, “fluoride treatment for kids” and “is fluoride varnish safe'”, were entered into the search engines of both Google and Yahoo, and the first 50 websites were saved. After excluding duplicate sites, promotional product sites, blogs/forums, news and articles, the remaining websites were evaluated. The DISCERN and LIDA tools were used to assess reliability, quality, and usability of websites. The accessibility of websites was assessed with AChecker tool while the readability was assessed with FRES instrument. Results: Of the 200 websites saved, 94 were suitable for inclusion. The mean total DISCERN score was 53±11.2 of a possible total of 80 (66%). With the LIDA instrument, the average score for reliability was 11.8±3.9 of a possible total of 27 (43%) while the average score for usability was 31.2±7 of a possible total of 54 (58%). The mean total AChecker score was 21.8±37 and the mean FRES score was 57.7± 11.6 (of a possible total of 100) indicating a level of fairly difficult to read.Conclusion: Information about fluoride on the internet is easily accessible although the reliability and quality were highly variable. The readability of websites should be improved to be more understandable.
  PubDate: Sun, 01 May 2022 00:00:00 +030
Evaluation of the effect of long-term N95 (FFP2) mask usage on blood
oxygen saturation and dentist comfort
- Authors: Gülsüm CEYLAN; Faruk EMİR
  Abstract: Objective: This study aimed to evaluate the effect of long-term use of N95 masks on dentists' oxygen saturation values and pulse rates due to dental procedures performed during the COVID-19 pandemic, and to determine the subjective complaints that occur during use.Materials and Method: A total of 60 volunteer dentists (24 males and 36 females) between the ages of 21-65 (mean 31.43±9.44) were included. Saturation and pulse rate records before and after 6 hours of continuous use of the N95 mask were recorded using a pulse oximeter. Participants scored subjective symptoms ranging from 1 to 10, including questions about nausea, headache, dizziness, visual impairment, shortness of breath, tachycardia, confusion, communication difficulties, fatigue, breath odor, mask moisture, temperature, and itching.Results: There were significant changes between pre- and post-values of oxygen saturation after 6 hours continuous use of N95 mask (day 1: p=0.012 and day 3: p=0.02), but this difference was not clinically significant. Pulse rates of the participants were checked before and after the N95 use, and no significant difference was found (p=0.455, p=0.479, p=0.053). Among the subjective complaints, itching and temperature were found to be higher in women than in men. Complaints of moisture, temperature, and communication difficulties in the male group, and complaints of moisture, temperature, and itching in the female group received relatively high scores within each group. Nausea, visual impairment, temperature, and itching scores in the female group were significantly higher than the male group (p=0.001).Conclusion: According to the results of this study, 6 hours of continuous use of the N95 mask might not clinically affect the oxygen saturation and pulse rates of dental professions. Subjective complaints of nausea, visual impairment, temperature, and itching were observed higher in women than in men.
  PubDate: Sun, 01 May 2022 00:00:00 +030
The impact of adding nano zirconium dioxide fillers on color change, water
sorption and solubility for denture liners
- Authors: Gulfem ERGUN; Ayşe Seda ATAOL, Zeynep ŞAHİN, Rükan GENÇ ALTÜRK
  Abstract: Objective: Zirconium dioxide (ZrO2) nanofillers were added to denture liners to improve their physical properties. The main goal of this research was to evaluate the impact of adding nano zirconium oxide (ZrO2) fillers on color change, water sorption and solubility of silicone and acrylic denture liners.Materials and Method: The surface of ZrO2 nanoparticles was modified via treatment with the silane coupling agent (3-aminopropyl) triethoxysilane. Fourier transform infrared spectroscopy analysis was performed to characterize surfaces untreated or treated with ZrO2. After modification, these nanoparticles were incorporated into silicone and acrylic denture liners. Three subgroups were assigned for each test method. Kruskal-Wallis and Mann-Whitney U tests were used for the statistical analysis (p ≤ 0.05).Results: Water sorption and solubility in water values decreased with the addition of modified ZrO2 nanofiller in both test groups (respectively, acrylic-based tissue conditioner: p = 0.040 and p = 0.020; silicone-based denture liner: p < 0.001 and p = 0.017). The acrylic-based tissue conditioner test group with 1% modified ZrO2 nanofiller showed the greatest color change (ΔΕ = 37.94 ±6.62), whereas the silicone-based denture liner group with 0.5% modified ZrO2 nanofiller presented the lowest (ΔΕ = 5.02 ±2.30).Conclusion: Modified ZrO2 nanofiller–incorporated silicone-based denture liners might show better clinical success than acrylic ones according to the evaluated parameters.
  PubDate: Sun, 01 May 2022 00:00:00 +030