Article
Biochemistry & Molecular Biology
Cristina Iosif, Stanca Cuc, Doina Prodan, Marioara Moldovan, Ioan Petean, Mindra Eugenia Badea, Sorina Sava, Andrada Tonea, Radu Chifor
Summary: Brackets' adhesion is affected by acidic drinks. Brackets bonded with RMGIC show the best resistance to acid erosion in the presence of two different drinks.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Ceramics
Fernando Rodriguez-Rojas, Oscar Borrero-Lopez, Estibaliz Sanchez-Gonzalez, Fernando Guiberteau
Summary: This study compared two engineering methodological approaches for investigating dental enamel/ceramic tribosystems and analyzed differences in wear rate measurements. The study discussed the impact of different methods on wear effects and highlighted the importance of judicious selection of test methods and interpretation of experimental wear results.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Tereza Krivkova, Antonin Tichy, Hana Tycova, Josef Kucera
Summary: A slight alteration of the enamel surface is inevitable upon debonding of orthodontic brackets, adhesive removal, and finishing/polishing. This in vitro study compared two adhesives and three polishing methods by measuring enamel surface roughness using confocal laser scanning microscopy (CLSM). The results showed that Transbond XT required more time for adhesive removal but had fewer residues of composite resin on the enamel surface. Polishing with Sof-Lex discs resulted in lower enamel roughness, while polishing pastes showed similar enamel morphology and roughness to the pre-treatment state.
Article
Ecology
Oscar Sanisidro, Ignacio Arganda Carreras, Juan L. Cantalapiedra
Summary: Dental morphology plays a significant role in ecological and evolutionary studies. In this study, a toolkit was developed to quantify enamel complexity using two-dimensional images. The results showed different evolutionary strategies in mammalian species, and the tool was found to be robust under various practical scenarios.
METHODS IN ECOLOGY AND EVOLUTION
(2023)
Article
Dentistry, Oral Surgery & Medicine
Navodita Jamwal, Ashwini Rao, M. C. Gowri Shankar, K. Ramya Shenoy, B. H. Mithun Pai, Praveen Jodalli, K. S. Aparna, B. R. Avinash
Summary: The study found that whitening toothpaste containing activated charcoal significantly reduced surface roughness, while toothpastes with blue covarine and activated charcoal also significantly reduced tooth microhardness after 3 months of use. Healthcare professionals should be cautious when recommending whitening toothpastes to patients.
CLINICAL ORAL INVESTIGATIONS
(2023)
Article
Materials Science, Multidisciplinary
Sergey Grigoriev, Alexander Metel, Enver Mustafaev, Yury Melnik, Marina Volosova
Summary: Micro-milling of rectangular bronze microchannels was performed using 1 mm carbide end mills processed with fast argon atoms and coated with anti-friction wear-resistant titanium diboride. By removing a 3 μm thick surface layer from the micro end mill and depositing a 3 μm thick anti-friction coating, the cutting edge radius was reduced to 1.2 μm, resulting in improved performance and decreased surface roughness of the machined bronze microchannel.
Article
Multidisciplinary Sciences
Enrico Salvati, Cyril Besnard, Robert A. Harper, Thomas Moxham, Richard M. Shelton, Gabriel Landini, Alexander M. Korsunsky
Summary: This study presents a simplified calculation framework for numerical simulation of the demineralisation process at the length scale of enamel rods, validated by experimental data. It explores the impact of etchant solution pH levels and etching angles on the demineralisation process. The study aims to pave the way for simulations of enamel demineralisation in different scenarios and length scales.
JOURNAL OF ADVANCED RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Mate Hegedus, Viktoria K. Kis, Abel Szabo, Ivett Kovacs, Noemi Rozsa, Zsolt Kovacs
Summary: The exceptional mechanical performance and durability of dental enamel can be attributed to its unique hierarchical structure and oriented prisms. This study quantified the orientation of enamel prisms using scanning electron microscopy, and revealed the influence of anisotropic gradient behavior on the elastic modulus of enamel.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Numan Habib, Aamer Sharif, Aqib Hussain, Muhammad Aamir, Khaled Giasin, Danil Yurievich Pimenov, Umair Ali
Summary: Efficient drilling is crucial for success in many industries, with the proper selection of drilling process parameters and tools being essential for high-quality holes. This study focuses on the effects of spindle speed and feed rate on chip analysis and hole quality, specifically in Al7075-T6 alloy drilling. Results indicate that surface roughness decreases with increasing spindle speed and increases with higher feed rates, while hole size increases with high spindle speed. High feed rates and low spindle speeds result in short and segmented chips.
Article
Dentistry, Oral Surgery & Medicine
Ahmed Mahmoud Fouda, Osama Atta, Amr Shebl Kassem, Mohamed Desoky, Christoph Bourauel
Summary: This study evaluated the wear resistance and abrasiveness of monolithic CAD/CAM ceramics. The results showed that monolithic zirconia demonstrated the best wear resistance and least abrasiveness to the antagonist. The experimental lithium disilicate was more wear-resistant compared to other glass-ceramic groups.
CLINICAL ORAL INVESTIGATIONS
(2022)
Article
Chemistry, Multidisciplinary
Zi Hong Mok, Petros Mylonas, Rupert Austin, Gordon Proctor, Nigel Pitts, Maya Thanou
Summary: Calcium phosphate nanoparticles were explored as a replacement for lost hydroxyapatite in nanoporous teeth due to dental erosion. The remineralization properties of the synthesized nanoparticles on eroded hydroxyapatite discs at different pH levels were investigated, showing heterogeneous deposition at pH 9.2 and potential formation of newly precipitated minerals at pH 6.2.
Article
Engineering, Manufacturing
Xiaodong Zhang, Maojun Li, Dingxiao Huang
Summary: In this study, acoustic emission (AE) technology was used to investigate the characteristics of AE signals during drilling of CFRP/Al stacks. The results showed that time-frequency diagram and RMS curve of AE signals could accurately distinguish different stages of drilling process, and AE signals were significantly correlated with machined surface quality.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Microbiology
Bernardo Teutle-Coyotecatl, Rosalia Contreras-Bulnes, Laura Emma Rodriguez-Vilchis, Rogelio Jose Scougall-Vilchis, Ulises Velazquez-Enriquez, Argelia Almaguer-Flores, Jesus Angel Arenas-Alatorre
Summary: This study assessed the impact of surface roughness of deciduous and permanent tooth enamel on bacterial adhesion. The results showed significant differences in nanometric roughness between the two types of enamel, although their micrometric roughness was similar. Deciduous enamel exhibited higher bacterial adhesion compared to permanent enamel, suggesting that enamel roughness may not be a determining factor in bacterial adhesion.
Article
Thermodynamics
Jianhua He, Vahid Barahimi, Masoud Farahnakian, Yuancheng Geng, Quyen Nguyen, Quang-Vu Bach
Summary: This study investigates the formation mechanism of surface and subsurface damages during the grinding process of borosilicate optical glass, examining the impacts of different grinding parameters on surface roughness, and conducting research on subsurface morphologies using an angular polishing method. The results demonstrate a good consistency between experimental and theoretical models.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Dentistry, Oral Surgery & Medicine
Ahmed A. Thawaba, Nehal F. Albelasy, Amira M. Elsherbini, Ahmad M. Hafez
Summary: This study aimed to compare the effects of different adhesive removal burs on enamel surface roughness. The results showed that zirconia burs were comparable to tungsten carbide burs and can be considered as an alternative to white stone burs, while the polishing step created a smoother surface regardless of the bur used for resin removal.
Article
Acoustics
Ning Hu, Zhenguo Liu, Shixin Jiang, Quanzhou Li, Shuqi Zhong, Bingquan Chen
Summary: A pyramid CNN (PCNN) method is proposed for remaining useful life (RUL) prediction of a milling tool. PCNN uses group convolution to extract multiscale features and channel attention to select key features, reducing parameter quantity and computing cost. Experimental results demonstrate better performance and lower computing cost compared to traditional MSCNN and other deep learning methods.
SHOCK AND VIBRATION
(2023)