Evaluation of Mechanical Properties for Selected Dental Composite Resin Polymerized by Light Curing Technology at Different Thickness

Hamam, Fatin M.; Bader, Ban A.; Slewa, Muna Y.

doi:10.4028/www.scientific.net/msf.1002.331

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…A large number of dental research and clinical treatments depend on the use of compound resin and light devices used in dental treatment. To achieve good mechanical properties of the composites included in the light-treated resins, the material must receive sufficient energy and appropriate wavelengths [4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Use of Multi-Response Logistic Regression to Determine the Factors Affecting the Radiation Values of Light-Curing Units in Private Dental Clinics in Erbil

Karyakos

Slewa

2022

Iraqi Journal of Science

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This study aims to determine the exposure of dentists to radiation resulting from the use of light therapy units and to assess their risk and impact on dental clinics. This study was conducted in private dental clinics in the city of Erbil in northern Iraq. Surveys were conducted to collect information about light-curing units. The results were analysed using the multi-response logistic regression to determine the factors affecting the radiation values of light-curing units. The results of the study showed that five major variables have a major effect by radiation. This is shown with a value of P ≤ 0.05. Typical treatment times with radiant light, with a typical number of daily restorations, may exceed the risk limits for blue light reflected on eyes. This is given that the responding dentists did not protect their eyes with enough blue light .Technology in dentistry requires the operator to have knowledge of basic technical specifications and the safe use of devices and tools routinely used in dental treatment.

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Section: Introductionmentioning

confidence: 99%

Use of Multi-Response Logistic Regression to Determine the Factors Affecting the Radiation Values of Light-Curing Units in Private Dental Clinics in Erbil

Karyakos

Slewa

2022

Iraqi Journal of Science

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Wear properties of acrylic dental material 3D printed via digital light processing: Influence of process settings

Vaezipour,

Shabgard,

Kazemi

2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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The digital light processing (DLP) is one of the additive manufacturing methods, renowned for its precision and efficiency, with wide-ranging applications, notably in dentistry. Recent advancements in photocurable resins and DLP technologies have profoundly influenced dentistry. Despite their common clinical use, some resins lack comprehensive empirical studies on their mechanical and wear properties. In addition, analyzing the wear resistance of dental materials manufactured via additive manufacturing is imperative for ensuring their prolonged durability and dependability within authentic oral settings. Profound comprehension of the manner in which these materials withstand abrasive forces ensures their capability to withstand the mechanical strains imposed by chewing and brushing activities, thereby preserving their structural robustness and functional efficacy. The aims of this research are to investigate the effect of DLP process parameter setting, including: layer thickness, exposure time, and light intensity, on the wear resistance of acrylate dental materials. Using a pin-on-disc apparatus, wear tests were conducted. A steel pin, with a diameter of 5 mm, moved linearly over the specimen surface under the speed of 15 m/min and applying a force of 20 N. Scanning electron microscopy (SEM) was employed to examine the worn surface and wear mechanisms. Additionally, Analysis of Variance (ANOVA) was utilized to assess parameter effects and correlations. The findings indicate that parameter configurations exert a considerable influence on wear resistance and represent a cost-effective avenue for enhancing the wear resistance of components produced through additive manufacturing. The results revealed a direct correlation between resin curing and wear resistance, with inadequate or excessive curing leading to increased wear rates. The samples with a layer thickness of 25 µm, exposure time of 7.2 s, and light intensity of 160 W/m2, exhibited the lowest wear rate (11 × 10−2 mm3/min). Conversely, samples with a layer thickness of 100 µm, exposure time of 2.8 s and light intensity of 160 W/m2, demonstrated the highest wear rate (55 × 10−2 mm3/min). Additionally, the analysis of variance confirmed correlations between parameters, noting a negative correlation between intensity and time parameters, and positive correlations among other inter-parameter correlations.

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The Influence of Printing Layer Thickness and Orientation on the Mechanical Properties of DLP 3D-Printed Dental Resin

2023

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Technological advances are closely related to the development of new materials and their processing and manufacturing technologies. In the dental field, the high complexity of the geometrical designs of crowns, bridges and other applications of digital light processing 3D-printable biocompatible resins is the reason for the need for a deep understanding of the mechanical proprieties and behavior of these materials. The aim of the present study is to assess the influence of printing layer direction and thickness on the tensile and compression proprieties of a DLP 3D-printable dental resin. Using the NextDent C&B Micro-Filled Hybrid (MFH), 36 specimens (24 for tensile strength testing, 12 for compression testing) were printed at different layer angulations (0°, 45° and 90°) and layer thicknesses (0.1 mm and 0.05 mm). Brittle behavior was observed in all specimens regardless of the direction of printing and layer thickness for the tensile specimens. The highest tensile values were obtained for specimens printed with a layer thickness of 0.05 mm. In conclusion, both printing layer direction and thickness influence mechanical proprieties and can be used to alter the materials’ characteristics and make the final printed product more suitable for its intended purposes.

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Evaluation of Mechanical Properties for Selected Dental Composite Resin Polymerized by Light Curing Technology at Different Thickness

Cited by 3 publications

References 18 publications

Use of Multi-Response Logistic Regression to Determine the Factors Affecting the Radiation Values of Light-Curing Units in Private Dental Clinics in Erbil

Use of Multi-Response Logistic Regression to Determine the Factors Affecting the Radiation Values of Light-Curing Units in Private Dental Clinics in Erbil

Wear properties of acrylic dental material 3D printed via digital light processing: Influence of process settings

The Influence of Printing Layer Thickness and Orientation on the Mechanical Properties of DLP 3D-Printed Dental Resin

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