Results 101 to 110 of about 79,422 (312)

Evaluation of two cementation protocols for lithium disilicate crowns on zirconia one-piece implants: a micro-CT analysis of cement thickness, porosity, and excess

Biomaterial Investigations in Dentistry
Objective: To evaluate the influence of two cementation protocols on lithium disilicate crowns cemented to zirconia one-piece implants by analyzing cement thickness, porosity, and excess cement using micro-computed tomography (micro-CT). Materials and
Veranda Azizi Bunjaku, Ivica Pelivan, Rania Al-Mahdi, Blerina Azizi Veseli, Ying Xue   +4 more
doaj   +1 more source

Analysis of Flexural Strength and Contact Pressure After Simulated Chairside Adjustment of Pressed Lithium Disilicate Glass-Ceramic [PDF]

, 2018
Statement of problem Research evaluating load-to-failure of pressed lithium disilicate glass-ceramic (LDGC) with a clinically validated test after adjustment and repair procedures is scarce.
Berzins, David W., Maroulakos, Georgios, Ramadhan, Ali, Thompson, Geoffrey A.   +3 more
core   +1 more source

Influence of ceramic (feldspathic) surface treatments on the micro-shear bond strength of composite resin [PDF]

, 2010
Objective: To test the null hypothesis that surface treatment has no influence on the micro-shear bond strength between orthodontic composite resin cement and ceramics (feldspathic porcelain).
Borges, Gilberto Antonio, Roberts, W. Eugene, Upadhyay, Madhur, Yadav, Sumit   +3 more
core   +1 more source

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs

Deep Underground Science and Engineering, EarlyView.
A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao, Shuheng Du, Yuan Zhang, Jinghong Hu, Bo Zhou, Yun Wei   +5 more
wiley   +1 more source

Self-healing of concrete cracks by the release of embedded water repellent agents and corrosion inhibitors to reduce the risk for reinforcement corrosion [PDF]

, 2017
From the worldwide steel production, approximately 50 per cent is required to replace corroded steel [1]. In the case of reinforced concrete structures, corrosion of the reinforcement steel causes crack formation and spalling which leads to ...
De Belie, Nele, De Maesschalck, Claudia, Kessler, Sylvia, Van Belleghem, Bjorn, Van den Heede, Philip, Van Tittelboom, Kim   +5 more
core   +1 more source

Resin Content in Cement Liquids of Resin-Modified Glass Ionomers.

Dental Materials Journal, 1999
Qualitative and quantitative analyses were conducted on four kinds of resin-modified glass ionomer (RMGI) cement liquids, LC, LC II, LC III (hereinafter referred to as LCs) and VM, using HPLC and laser Raman spectroscopic methods. HPLC revealed that among the RMGI liquids LCs contain 31-32% HEMA (2-Hydroxyethyl methacrylate), and VM contains 18% of the
K, Ikeda, A, Fujishima, M, Suzuki, M, Inoue, R, Sasa, T, Miyazaki   +5 more
openaire   +3 more sources

Modeling and experimental validation of bolt–grout bond–slip behavior for deep underground excavation support

Deep Underground Science and Engineering, EarlyView.
A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian, Xiaohui He, Kexue Wang, Yufei Wu, Guoxin Wang, Shaochen Zhang, Jun Yang   +6 more
wiley   +1 more source

Post-cementation sensitivity of bridges cemented with different adhesive resin cements

Journal of Clinical and Experimental Dentistry
Post-cementation sensitivity remains a common clinical concern in fixed partial dentures (FPDs), with variations in adhesive resin cement formulations influencing patient discomfort and long-term success. This study aimed to compare post-cementation sensitivity in FPDs cemented with three different resin cements: self-adhesive resin cements, resin ...
Farag, D., Almufti, A., Alghalayini, M., Shaheen, N., Darwish, M., Sadek, S.   +5 more
openaire   +3 more sources

Enhancement of Adhesion between Resin Coating Materials and Resin Cements

Dental Materials Journal, 2007
Resin coating technique is a unique method that improves the dentin bond strength of resin cements in indirect restorations. However, the weak link of a specimen bonded using the resin coating technique was reported to be the bonded interface between the resin coating material and resin cement.
Udo, T, Nikaido, T, Ikeda, M, Weerasinghe, D S, Harada, N, Foxton, R M, Tagami, J   +6 more
openaire   +3 more sources