Results 21 to 30 of about 861,869 (257)

Effect of different axial speed patterns on cyclic fatigue resistance of rotary nickel-titanium instruments

BMC Oral Health, 2022
Background To evaluate the effect of pecking motions with faster upward speed on the dynamic cyclic fatigue resistance of nickel-titanium rotary instruments with different metallurgy. Methods Forty each of ProTaper Universal F3 (PTU) and ProTaper Gold F3
Myint Thu, Arata Ebihara, Keiichiro Maki, Miki Nishijo, Shunsuke Kimura, Taro Nakatsukasa, Moe Sandar Kyaw, Takashi Okiji   +7 more
doaj   +1 more source

Dental pulp stem cell‐derived exosomes alleviate cerebral ischaemia‐reperfusion injury through suppressing inflammatory response

Cell Proliferation, 2021
The study aimed to determine whether dental pulp stem cell‐derived exosomes (DPSC‐Exos) exert protective effects against cerebral ischaemia‐reperfusion (I/R) injury and explore its underlying mechanism.
Song Li, Lihua Luo, Yan He, Ruohan Li, Yangfan Xiang, Zhenjie Xing, Yejian Li, A. Albashari, Xiangyan Liao, Keke Zhang, Liang Gao, Qingsong Ye   +11 more
semanticscholar   +1 more source

Phase transformation and mechanical properties of heat-treated nickel-titanium rotary endodontic instruments at room and body temperatures

BMC Oral Health, 2023
Background The aim of this study was to evaluate the phase composition, phase transformation temperatures, bending property, and cyclic fatigue resistance of different heat-treated nickel-titanium (NiTi) rotary instruments with the same tip diameter and ...
Yuka Kasuga, Shunsuke Kimura, Keiichiro Maki, Hayate Unno, Satoshi Omori, Keiko Hirano, Arata Ebihara, Takashi Okiji   +7 more
doaj   +1 more source

Human dental pulp stem cell responses to different dental pulp capping materials

BMC Oral Health, 2021
Background Direct pulp capping is a vital pulp therapy for a pin-point dental pulp exposure. Applying a pulp capping material leads to the formation of a dentin bridge and protects pulp vitality.
Chawan Manaspon, C. Jongwannasiri, Sujin Chumprasert, N. Sa-Ard-Iam, R. Mahanonda, P. Pavasant, T. Porntaveetus, T. Osathanon   +7 more
semanticscholar   +1 more source

Periodontal and Dental Pulp Cell-Derived Small Extracellular Vesicles: A Review of the Current Status

Nanomaterials, 2021
Extracellular vesicles (EVs) are membrane-bound lipid particles that are secreted by all cell types and function as cell-to-cell communicators through their cargos of protein, nucleic acid, lipids, and metabolites, which are derived from their parent ...
Shu-chiou Hua, P. Bartold, K. Gulati, C. Moran, S. Ivanovski, Pingping Han   +5 more
semanticscholar   +1 more source

Dynamic torque and screw-in force of four different glide path instruments assessed in simulated single- and double-curved canals: An in vitro study

Journal of Dental Sciences, 2023
Background/purpose: The glide path instruments are the introductory instruments into the canals; thus, they should be durable enough to withstand torsional stress/screw-in force.
Myint Thu, Arata Ebihara, Keiichiro Maki, Shunsuke Kimura, Moe-Sandar Kyaw, Yuka Kasuga, Miki Nishijo, Takashi Okiji   +7 more
doaj   +1 more source

Physical and Biological Properties of a Chitosan Hydrogel Scaffold Associated to Photobiomodulation Therapy for Dental Pulp Regeneration: An In Vitro and In Vivo Study

BioMed Research International, 2021
Background The regeneration of dental pulp, especially in cases of pulp death of immature teeth, is the goal of the regenerative endodontic procedures (REPs) that are based on tissue engineering principles, consisting of stem cells, growth factors, and ...
M. S. Moreira, G. Sarra, Giovanna Lopes Carvalho, F. Gonçalves, H. Caballero-Flores, A. C. Pedroni, C. Lascala, L. Catalani, M. Marques   +8 more
semanticscholar   +1 more source

Influence of different kinematics on stationary and dynamic torsional behavior of JIZAI nickel-titanium rotary instruments: An in vitro study

Journal of Dental Sciences, 2023
Background/purpose: Using conventional approach to examine stationary torque of nickel-titanium rotary instruments contradicts the clinical condition, and its validity for motions involving clockwise and counterclockwise rotations is questionable.
Myint Thu, Arata Ebihara, Moe Sandar Kyaw, Satoshi Omori, Keiichiro Maki, Shunsuke Kimura, Hayate Unno, Takashi Okiji   +7 more
doaj   +1 more source

Comparison of vapor bubble kinetics and cleaning efficacy of different root canal irrigation techniques in the apical area beyond the fractured instrument

Journal of Dental Sciences, 2023
Background/purpose: Intracanal fractured instruments hamper adequate root canal disinfection. The aim of this study was to evaluate vapor bubble kinetics and cleaning efficacy of different irrigation techniques in the apical area beyond the fractured ...
Jiayi Liu, Satoshi Watanabe, Sota Mochizuki, Akira Kouno, Takashi Okiji   +4 more
doaj   +1 more source

Hypoxia-inducible factor 1α induces osteo/odontoblast differentiation of human dental pulp stem cells via Wnt/β-catenin transcriptional cofactor BCL9

Scientific Reports, 2022
Accelerated dental pulp mineralization is a common complication in avulsed/luxated teeth, although the mechanisms underlying this remain unclear. We hypothesized that hypoxia due to vascular severance may induce osteo/odontoblast differentiation of ...
Shion Orikasa, Nobuyuki Kawashima, Kento Tazawa, Kentaro Hashimoto, Keisuke Sunada-Nara, Sonoko Noda, Mayuko Fujii, Tetsu Akiyama, Takashi Okiji   +8 more
doaj   +1 more source