Study of some Dental Biomaterials Properties Using an Original Software Application

Prejmerean, Vasile; Silaghi-Dumitrescu, Laura; Prodan, Doina; Prejmerean, Cristina; Moldovan, Mărioara

doi:10.4028/www.scientific.net/kem.587.121

Cited by 4 publications

(7 citation statements)

References 8 publications

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“…The color change was investigated on digitally captured images on the initially colored and then bleached samples. Figure 2 shows digital images used for the color difference (ΔE ab ) by applying the original software (Dentcolor application, UBB, Cluj-Napoca, Romania) [34].…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Natural Bleaching Gels Used in Cosmetic Dentistry

et al. 2019

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The novelty of this study consists of the formulation and characterization of three experimental bleaching gels with hydroxylapatite oxides and fluorine (G28®, G29®, G30®) based on natural fruit extracts compared to the commercial Opalescence 15% (GC, Ultradent, South Jordan, UT, USA). Studies have been conducted on the effect that the experimental bleaching gels have on the color and morphology of different restorative materials (Nanofill®-Schulzer, P.L. Superior Dental Materials GmbH, Hamburg, Germany, and experimental nanocomposites (P11®, P31®, P61®)), immersed in coffee and artificial saliva (for 10 days and 30 days). The study also includes a cytotoxicity test on the gels and nanocomposites after bleaching, with ISO 109993-5 protocols on human dental follicle stem cells. UV-VIS spectroscopy, computerized measurement, and fluorescence spectrometry were used in order to observe the color changes, while the microstructure of the surface was investigated by Scanning Electron Microscopy (SEM). All of the samples immersed in coffee showed the highest color shift in comparison to the baseline. The color difference ΔE values obtained using the two methods (UV-Vis, computerized based on digital images) both after coloring and bleaching, respectively, were different for all four types of nanocomposites stored in the coffee, while no difference was observed in those stored in artificial saliva. The studied experimental gels and nanocomposites had a low cytotoxic effect on cell cultures after bleaching.

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Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Natural Bleaching Gels Used in Cosmetic Dentistry

et al. 2019

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“…Radiopacity was determined by digitally processing the radiographed discs using a computer application ( Figure 3 ) [ 20 ]. Four areas have been selected for each sample, corresponding to a different quadrant (quadrants I, II, III, IV) of the prepared disc.…”

Section: Methodsmentioning

confidence: 99%

Comparative Radiographic Assessment of a New Bioceramic-Based Root Canal Sealer

Hrab

Chisnoiu

Badea

et al. 2017

Medicine and Pharmacy Reports

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Background and aimsThe aim of this study was to assess the radiopacity of two bioceramic-based root canal sealers, the conventional TotalFill BC sealer (FKG Dentaire Switzerland) and a new experimental filling material developed in collaboration with ‘Raluca Ripan’ Institute for Research in Chemistry, Cluj-Napoca.MethodsFive disc samples were prepared using both materials (10 mm diameter × 1 mm thickness), being subjected to digital radiography together with aluminum step wedges (1 to 12 mm in thickness), in accordance with ISO 6876: 2012. Radiopacity was determined by the computer analysis of the images obtained. Four different areas were selected for each sample, corresponding to a disk-sample quadrant. Statistical analysis was performed using ANOVA.ResultsBoth materials showed a radiopacity that was 3 mm greater than the equivalent thickness of aluminum. Total Fill BC showed greater radiopacity than the experimental material, but the differences were not statistically significant.ConclusionsBoth materials comply with ISO 6876: 2012 recommendations on minimum radiopacity.

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“…The volume median diameter, d 50 , of the radiopaque glass was 5 µm, and d(0.1), d(0.5) and d(0.9) were 1.238 µm, 7.147µm and 19.122 µm, respectively [22]. The preparation method of FHAP was described elsewhere [32]. The synthesised nanoparticles in the form of rods had lengths between 15 and 160 nm and a thickness of approximately 10 nm.…”

Section: Preparation Of the Giomer Gmentioning

confidence: 99%

Innovative Adhesive Systems for Dental Giomer Restorations

Hodisan¹,

Prejmerean²,

Buruiană³

et al. 2018

Rev. Chim.

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The aim of this work was to reduce microleakage in giomer restorations by using innovative materials in both adhesive systems and light-cured dental giomer. Two adhesive systems with different primers were investigated. The innovative compounds in the primers were acrylic acid (AA)/itaconic acid (IA) copolymer modified with methacrylic groups and AA/IA/N-acryloyl-L-leucine copolymer grafted with methacrylic groups. In addition, the investigated new giomer G contains a pre-reacted glass based on the latter copolymer. The commercial Beautifil II giomer and the FL-Bond II adhesive system were used for comparison. Microleakage was evaluated by determining the scores and percentages of dye penetration lengths after thermocycling of a series of light-cured dental giomer restorations performed on 42 premolars extracted for orthodontic reasons. A lower microleakage value was recorded for the adhesive system containing the AA/IA/N-acryloyl-L-leucine copolymer grafted with methacrylic groups than for the commercial adhesive, which was in substantial agreement with SEM and AFM investigations. In this case, remarkable dentin sealing and a strong adhesion at the giomer restoration�tooth interface was observed, and the innovative adhesive was proven to be promising for dental applications.

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Study of some Dental Biomaterials Properties Using an Original Software Application

Cited by 4 publications

References 8 publications

Preparation and Characterization of Natural Bleaching Gels Used in Cosmetic Dentistry

Preparation and Characterization of Natural Bleaching Gels Used in Cosmetic Dentistry

Comparative Radiographic Assessment of a New Bioceramic-Based Root Canal Sealer

Innovative Adhesive Systems for Dental Giomer Restorations

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