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1,783 results on '"Tagami, Junji"'

4. Enhanced silver diamine fluoride therapy using the PILP method -A nanoindentation study.

Author

Nurrohman, Hamid, Habelitz, Stefan, Saeki, Kuniko, Sadr, Alireza, Gower, Laurie B, Pazdernik, Vanessa, Tagami, Junji, Marshall, Sally J, and Marshall, Grayson W

Subjects
Artificial caries dentin lesion, Caries arrest, Nanomechanical recovery, Polymer-induced liquid-precursor, Silver diamine fluoride, Dentistry, Biomedical Engineering
Abstract

The aim of this study was to evaluate the feasibility of applying the polymer-induced liquid-precursor (PILP) method to enhance silver diamine fluoride (SDF) therapy. One hundred forty micrometer deep artificial caries lesions were treated with (A) 38% SDF solution and (B) 38% SDF containing poly-L-aspartic acid (pASP). Changes in the nanomechanical profile across the lesion were evaluated. Hydrated artificial lesions had a low reduced elastic modulus (0.3 GPa) and nanohardness (0.02 GPa) region extending about 100 μm into the lesion, with a gradual linear increase to about 168 μm where the values plateaued to around 18 GPa/1.0 GPa. Topical application of SDF resulted in significantly recovered properties (p

Published
2020

10. Material of choice for non‐invasive treatment of dentin caries: An in vitro study using natural carious lesions.

Author

Kongsomjit, Maneekarn, Punyanirun, Kulnipa, Tasachan, Wacharaporn, Hamba, Hidenori, Tagami, Junji, Trairatvorakul, Chutima, and Thanyasrisung, Panida

Subjects
CAVITY prevention, IN vitro studies, HYDROGEN-ion concentration, T-test (Statistics), DATA analysis, RESEARCH funding, DENTAL materials, FLUORIDE varnishes, DENTIN, CARIOSTATIC agents, COMPUTED tomography, DESCRIPTIVE statistics, DECIDUOUS teeth, SILVER compounds, REMINERALIZATION (Teeth), DENTIFRICES, STATISTICS, ONE-way analysis of variance, COMPARATIVE studies, DENTAL glass ionomer cements
Abstract

Introduction: In community settings with limited dental personnel and equipment, and in an era when the aerosol transmission of infectious agents is on the rise, a non‐invasive approach to caries management is critical. To provide information on non‐invasive material selection, the aim of this study was to compare the remineralization effect of commonly used fluoride‐containing materials, adjunctive to the everyday use of fluoride toothpaste (F‐toothpaste), on primary tooth natural dentin caries. Methods: Fifty‐five specimens were randomly divided into five groups: 38% silver diamine fluoride (SDF), 5% fluoride varnish (F‐varnish), glass‐ionomer cement (GIC), deionized water (DW) with F‐toothpaste slurry, and DW as a control group (n = 11). The lesion depth and mineral density were measured before and after bacterial pH‐cycling using micro‐computed tomography. The percentage of mineral density change (%MDchange) was quantified. The dependent t‐test, Wilcoxon‐Signed‐Rank Test, and one way ANOVA with Bonferroni correction were used to analyse the data. Results: SDF application reduced lesion depth from 844.6 to 759.1 μm (p < 0.045) while increasing mineral density from 551.4 to 763.0 mgHA/cm3 (p < 0.003). Only mineral density rose from 600.2 to 678.4 mgHA/cm3 (p < 0.013) when GIC was used. The other groups showed no difference. The highest %MDchange was also found after SDF treatment (49.7%, p < 0.05), whereas GIC (17.2%, p < 0.05) presented a higher percentage than the F‐varnish (2.0%), F‐toothpaste (−1.1%) and no‐treatment groups (−1.4%). Conclusion: In this in vitro study, where the pH of cycling was almost neutral, using SDF as an adjunct to F‐toothpaste resulted in the highest remineralization compared with other remineralizing materials. [ABSTRACT FROM AUTHOR]

Published
2024
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20. Resin Cement/Enamel Interface: A Morphological Evaluation of the Acid-Base Resistant Zone, Enamel Etching Pattern, and Effect of Thermocycling on the Microshear Bond Strength.

Author

Kumagai, Rose Y., Tomohiro Takagaki, Takaaki Sato, Toru Nikaido, Giannini, Marcelo, Reis, Andre, and Tagami, Junji

Abstract

Purpose: To evaluate the effects of etching mode (self-etch and etch-and-rinse) on acid-base resistant zone (ABRZ) formation at the resin cement/enamel interface and enamel etching pattern, as well as the effects of thermocycling (0, 5000, and 10,000 cycles) on the enamel microshear bond strength (µSBS) mediated by dual-cure resin cements (DCRC). Materials and Methods: Two DCRC were used in 4 groups: Panavia V5 in self-etch (V5NE) and etch-and-rinse mode (V5E); and Estecem II in self-etch (ENE) and etch-and-rinse mode (EE). For ABRZ observation, the bonded interface was subjected to a demineralizing solution. The morphological attributes of the interface and etching patterns were observed using FE-SEM. For µ-SBS, cylinders with a 0.79-mm internal diameter and 0.5-mm height were made with DCRC and tested in shear after 0, 5000, and 10,000 thermal cycles (TC) (5°C and 55°C) (n = 10). Results: The formation of an enamel ABRZ was observed in all groups with different morphological features between selfetch and etch-and-rinse groups. A funnel-shaped erosion beneath the interface was present using V5NE and ENE modes where enamel was dissolved, while ABRZ formation was confirmed and no funnel-shaped erosion was noticed using V5E and EE. No significant differences in µSBS were observed between resin cements. However, significantly lower µSBSs were recorded when the self-etching mode was used. Thermocycling resulted in a significant reduction in µSBS for all groups. Conclusion: Selective enamel etching should be recommended to improve the interfacial quality when dual-cure resin luting cements are used. [ABSTRACT FROM AUTHOR]

Published
2023
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40. Study of Streptococcus mutans in Early Biofilms at the Surfaces of Various Dental Composite Resins

Author

Alqarni, Dhaifallah, primary, Nakajima, Masatoshi, additional, Tagami, Junji, additional, Alzahrani, Mohammed S, additional, Sá-Pinto, Ana Clara, additional, Alghamdi, Ali, additional, Hosaka, Keiichi, additional, Alzahrani, Fouad, additional, Alsadon, Omar A, additional, Alharbi, Raed A, additional, Almalki, Shaia S, additional, and Alzahrani, Abdullah Ali H, additional

Published
2023
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