Results 51 to 60 of about 10,106 (306)

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

open access: yesPLoS 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

open access: yesThe 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   +9 more
wiley   +1 more source

Molar macrowear reveals Neanderthal eco-geographic dietary variation

open access: yes, 2011
Neanderthal diets are reported to be based mainly on the consumption of large and medium sized herbivores, while the exploitation of other food types including plants has also been demonstrated.
Kullmer, Ottmar   +13 more
core   +1 more source

Cervical Abrasion and Gingival Recession in Dental Polyclinic Patients

open access: yes, 2022
Background: The most common dental health problem in Indonesia is dental caries. The prevalence of caries by 92.2% and ages 35-44 years experienced dental health problems, with the DMF-T index of 6.9 meaning the average number of tooth decay was 6 to 7 ...
Tedi Purnama, Eka Anggreni, Roslinda
core   +1 more source

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

open access: yesBMEMat, 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   +6 more
wiley   +1 more source

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

open access: yesJournal 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   +3 more
doaj   +1 more source

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

open access: yesInternational 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   +2 more
doaj   +1 more source

Efeitos da degradação química e mecânica na rugosidade superficial de materiais resinosos compósitos [PDF]

open access: yes, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-Graduação em Odontologia, Florianópolis, 2015.Este estudo in vitro avaliou o comportamento de materiais restauradores resinosos de diferentes ...
Velho, Cinara Muniz
core  

Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade

open access: yesBiological Reviews, EarlyView.
ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan   +2 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

open access: yesJixie 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  

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