Results 111 to 120 of about 7,902,284 (310)

Endodontic management of a four‐canal mandibular second premolar; using an operative microscope: A case report

Clinical Case Reports
Key Clinical Message Due to the complexities and variations of the root canal system's anatomy, mandibular premolars are among the most difficult teeth for endodontic treatment.
Sholeh Ghabraei, Reza MahjourianQomi, Parisa Bagheri   +2 more
doaj   +1 more source

Physics‐Aware Machine‐Learning‐Driven Inverse Design of Broadband Ultra‐Open Acoustic Metamaterials

Advanced Science, EarlyView.
A physics‐aware machine‐learning framework enables inverse design of ultra‐open acoustic silencers by decoupling spectral and radial design spaces. The approach rapidly identifies broadband, compact, and highly ventilated architectures, while revealing hidden linear design rules that link geometry, impedance matching, and acoustic performance.
Zhiwei Yang, Mengyu Li, Xiaohang Xie, Ao Chen, Thomas G. Bifano, Xin Zhang   +5 more
wiley   +1 more source

Expert consensus on difficulty assessment of endodontic therapy

International Journal of Oral Science
Endodontic diseases are a kind of chronic infectious oral disease. Common endodontic treatment concepts are based on the removal of inflamed or necrotic pulp tissue and the replacement by gutta-percha.
Dingming Huang, Xiaoyan Wang, Jingping Liang, Junqi Ling, Zhuan Bian, Qing Yu, Benxiang Hou, Xinmei Chen, Jiyao Li, Ling Ye, Lei Cheng, Xin Xu, Tao Hu, Hongkun Wu, Bin Guo, Qin Su, Zhi Chen, Lihong Qiu, Wenxia Chen, Xi Wei, Zhengwei Huang, Jinhua Yu, Zhengmei Lin, Qi Zhang, Deqin Yang, Jin Zhao, Shuang Pan, Jian Yang, Jiayuan Wu, Yihuai Pan, Xiaoli Xie, Shuli Deng, Xiaojing Huang, Lan Zhang, Lin Yue, Xuedong Zhou   +35 more
doaj   +1 more source

SDF‐1 Attenuates Oocyte Quality Decline During Reproductive Aging Through Autophagy‐Enhanced Stress Granule Scavenging

Advanced Science, EarlyView.
SDF‐1 levels decline significantly with maternal aging. Exogenous supplementation restores meiotic spindle morphology, chromosomal alignment, and mitochondrial function while reducing oxidative stress in aged oocytes. Mechanistically, SDF‐1 enhances autophagic activity to clear accumulated stress granules, thereby rescuing fertilization competence and ...
Rui Long, Meng Wang, Ruolin Mao, Hong Chen, Juepu Zhou, Xiangfei Wang, Zheng Yuan, Ri‐Cheng Chian, Nan Xiao, Qingsong Xi, Yimin Shu, Lei Jin, Lixia Zhu   +12 more
wiley   +1 more source

GM‐CSF Promotes Neutrophil PD‐L1 Expression Through the VEGFR‐2/STAT6/CSF2 Signaling Axis in Oral Squamous Cell Carcinoma

Advanced Science, EarlyView.
VEGFR‐2 signaling in OSCC activates Src–STAT6‐dependent CSF2 transcription, driving tumor‐derived GM‐CSF secretion. GM‐CSF programs neutrophils to express PD‐L1 through STAT5–mTOR/S6K signaling, suppressing cytotoxic CD8+ T cells. This pathway reveals a tumor–neutrophil immune checkpoint circuit that limits anti‐PD‐1 responsiveness in OSCC.
Fangxing Zhu, Yuanhe You, Yiyi Zhang, Yibin Dai, Xinyu Zhou, Yong Fu, Xi Lu, Yingying Huang, Zhihang Zhou, Ronghui Xia, Wutong Ju, Zhaoqi Yuan, Laiping Zhong, Tongchao Zhao   +13 more
wiley   +1 more source

Three-dimensional CBCT analysis of bone remodeling, root resorption, and incisive canal morphology during miniscrew-assisted aligner-based incisor retraction with and without extractions

Frontiers in Oral Health
ObjectivesThis study aimed to investigate three-dimensional changes in incisive canal (IC) morphology, root–canal proximity, and root resorption following maxillary incisor (U1) retraction with clear aligners, comparing extraction and non-extraction ...
Remsh Khaled Al-Rokhami, Remsh Khaled Al-Rokhami, Zhihua Li, Deguo Gao, Xin Zhao, Jingke Liu, Hua Fan, Karim Ahmed Sakran   +7 more
doaj   +1 more source

SemanticST: A Scalable Multi‐Contextual Graph Learning Framework for Uncovering Spatial Niches and Robust Multi‐Sample Integration in Spatial Transcriptomics

Advanced Science, EarlyView.
Technical limitations often let dominant signals overshadow rare cell types and fine‐grained heterogeneity in spatial transcriptomics. SemanticST, a graph neural network using multi‐semantic graph fusion and a novel min‐cut loss, recovers these subtle patterns.
Roxana Zahedi, Ahmadreza Argha, Nona Farbehi, Ivan Bakhshayeshi, Thantrira Porntaveetus, Youqiong Ye, Nigel H. Lovell, Hamid Alinejad‐Rokny   +7 more
wiley   +1 more source

Root Canal Retreatment: 1. Case Assessment and Treatment Planning

, 2004
Root canal retreatment is often the preferred method of treating a tooth in which root canal treatment has failed. Part one of this two-part article discusses reasons for failure of root canal treatment, case assessment and treatment planning.
J.S. Rhodes, T.R. Pitt Ford
core   +1 more source

Functional Sex Reversal in Adult Gonochoristic Teleosts is Mediated by Ovarian Germline Stem Cell Plasticity and Somatic Cell Transdifferentiation

Advanced Science, EarlyView.
Oocytes play crucial roles in maintaining ovarian fate in adult gonochoristic fish. Targeted oocyte ablation with aromatase inhibition triggers the activation of surviving germline stem cells and the transdifferentiation of somatic cells from granoulosa/theca to Sertoli/Leydig lineages, inducing a complete and functional female‐to‐male sex reversal ...
Yang Yang, Liechao Yu, Wanchang Zhang, Gary Wessel, Ruiyi Chen, Weihua Hu, Dongdong Xu   +6 more
wiley   +1 more source

F7 Drives Gastric Cancer Metastasis Through Anoikis Resistance and Tumor Microenvironment Remodeling

Advanced Science, EarlyView.
ABSTRACT Coagulation factor VII (F7) has been implicated in tumor progression; however, its role in gastric cancer metastasis and immune evasion remains incompletely understood. In this study, we identified F7 as a clinically relevant driver of gastric cancer.
Lei Gao, Qinying Han, Yunpeng Wang, Xuemei Li, Bofang Wang, Baohong Gu, Weidong Li, Lin Xiang, Ying Zhang, Hao Chen   +9 more
wiley   +1 more source