Results 41 to 50 of about 8,602 (265)

Occlusal enamel complexity in middle miocene to holocene equids (Equidae: Perissodactyla) of North America.

PLoS ONE, 2014
Four groups of equids, "Anchitheriinae," Merychippine-grade Equinae, Hipparionini, and Equini, coexisted in the middle Miocene, but only the Equini remains after 16 Myr of evolution and extinction.
Nicholas A Famoso, Edward Byrd Davis
doaj   +1 more source

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

The Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison, James Gregory, Christopher Jackson, Jordan Bestwick, Katlin Schroeder, Samuel J.L. Gascoigne, Paul Bills, Laura B. Porro, Philip D. Mannion, Paul M. Barrett   +9 more
wiley   +1 more source

Integrated microanatomy and microstructure of the maxillary tooth plate reveal a reinforced feeding system and tougher diet in Late Triassic Hyperodapedontinae (Rhynchosauria, Archosauromorpha)

The Anatomical Record, EarlyView.
Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini, Pedro L. B. Pruciano, Brodsky D. M. Farias, Marina B. Soares   +3 more
wiley   +1 more source

摆动活齿传动啮合副运动状态分析与共轭齿廓滑动率研究

Jixie chuandong, 2013
Motion state of meshing pairs of swing movable tooth during one motion cycle is studied and meshing process is analyzed.The formula of relative angular velocity is deduced.Variation curve of relative angular velocity is plotted and variation rule is ...
宜亚丽, 安子军, 曲继方
doaj  

Novel 3-dimensional classification of cervical abrasion using CBCT: A comprehensive analysis

Journal of Oral Biology and Craniofacial Research
Introduction: Tooth cervical abrasion (CA) is a prevalent non-carious cervical lesion that poses challenges for accurate diagnosis from periapical radiographs due to difficulties in assessing the lesion's extent, associated bone loss, and pulpal ...
Tarun Kumar Singh, Ashish J. Johnson, Aakash Gupta, Ikroop Gill   +3 more
doaj   +1 more source

Tracheal chambers as a key innovation for high‐frequency emission in bat echolocation

The Anatomical Record, EarlyView.
Abstract Key innovations are pivotal for biodiversity and facilitating evolutionary success, enabling organisms' adaptation to various ecological niches through the diversification of phenotypic traits. In mammals, notable adaptations include evolving hypsodonty for grazing on grasses and, for bats, evolving echolocation and wing acquisition.
Nicolas L. M. Brualla, Laura A. B. Wilson, Khizar Hayat, Michael Doube, Vuong Tan Tu, Thongchai Ngamprasertwong, Thanakul Wannaprasert, Daisuke Koyabu   +7 more
wiley   +1 more source

MORPHOLOGICAL CHANGES IN TOOTH DENTIN AT VARIOUS STAGES OF ABRASION AND THEIR IMPACT ON THE CHOICE OF ORTHOPEDIC TREATMENT

Клінічна та профілактична медицина
Introduction. The severity of orthopedic treatment of patients with pathological abrasion of hard dental tissues is due to the progressive development of abrasion, an increase in the free interocclusal space, a decrease in the interalveolar distance and ...
Mykola M. Maliuchenko, Petro A. Hasiuk, Anna B. Vorobets, Tetiana I. Dzetsiukh, Dmytro D. Kindiy, Iuriy A. Gasiuk, Pavlo M. Maliuchenko   +6 more
doaj   +1 more source

Is Deterioration of Surface Properties of Resin Composites Affected by Filler Size?

International Journal of Dentistry, 2020
Statement of the problem. Resin composite restorations can lose their aesthetic properties in clinical service. Purpose. To investigate the effect of filler size on surface gloss and roughness of resin composites using a glossmeter and 3D noncontact ...
H. Elbishari, N. Silikas, J. D. Satterthwaite   +2 more
doaj   +1 more source

Targeting neutrophil extracellular traps in metabolic and immune niche: Nanomaterials for diabetes tissue regeneration

BMEMat, EarlyView.
The effects of NETs on regeneration of various diabetic tissues, and strategies targeting NETs for diabetes tissue regeneration. In the diabetic environment, NETs undergo complex metabolic and immune reprogramming, leading to dynamic changes in antibacterial and proinflammatory functions, and affecting regeneration of multiple systemic tissues.
Xinyi Jiang, Muxin Yue, Kai Mao, Boon Chin Heng, Noor Azlin Yahya, Yunsong Liu, Zheng Li   +6 more
wiley   +1 more source

Optimized micro‐sized cell sphere‐matrix niche co‐aggregates promote efficient oral and craniomaxillofacial bone regeneration

BMEMat, EarlyView.
The construct of cell‐niche co‐aggregates (GelMA‐SHED sphere‐DDMPs) promotes cranial and periodontal bone regeneration and ensures angiogenic‐osteogenic coupling by downregulating miR‐34c‐5p to enhance the expression of NOTCH1 and its intracellular domain (NICD).
Xiao‐Hui Zhang, Shi‐Han Mu, Yi‐Han Xiao, Lu‐Fan Yang, Peng‐Fei Wang, Teng‐Fei Hu, Jun‐Xi He, Jiong‐Zhen Piao, Sha Zhang, Jin‐Yu Liu, Yi‐De He, Ying‐Ying Wu, Si‐Qi Ying, Xin‐Yue Cai, Chen‐Han Li, Zi‐Qi Zhang, Xiao Lei, Ji Chen, Jian‐Fei Liang, Yan Jin, Bing‐Dong Sui, Chao Ma, Chen‐Xi Zheng, Fang Jin   +23 more
wiley   +1 more source