Results 161 to 170 of about 276,538 (346)

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Comparação da adaptação marginal de peças protéticas confeccionadas no sistema CAD/CAM e no sistema termo-prensável: uma revisão de literatura [PDF]

open access: yes, 2015
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências da Saúde. Odontologia.Com superioridade estética, alta resistência e longevidade, as restaurações livres de metal são hoje uma excelente escolha quando comparadas às ...
Santos, Victor Márcio
core  

Endothermy, neuron counts, and other issues: Further remarks on neurocognitive evolution in fossil vertebrates

open access: yesThe Anatomical Record, EarlyView.
Abstract Last year, we challenged the view that large‐bodied theropod dinosaurs such as Tyrannosaurus rex resembled primates in cognition and behavior, a proposition made by Herculano‐Houzel in 2023. More recently, Jensen et al. have criticized our work on this topic, raising methodological and conceptual issues.
Kai R. Caspar   +5 more
wiley   +1 more source

Effect of axial groove and resin luting cements on the retention of complete cast metal crowns

open access: yesDental Research Journal, 2009
Background : The design of the tooth preparation and the cementing medium are important consid-erations in the retention of crowns and fixed partial dentures.
K Rajkumar   +5 more
doaj  

Guimaras crowns new queen [PDF]

open access: yes, 2023
Sornito, Ime
core  

Clinical Evaluation and Parental Satisfaction with Pediatric Posterior Stainless Steel Crowns and Zirconia Crowns: A Comparative study [PDF]

open access: yes, 2019
AIM OF THE STUDY: To clinically evaluate and compare the performance of posterior pediatric zirconia crowns with stainless steel crowns and elicit parental satisfaction for the same.
Gayathri, M
core  

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin)

open access: yesThe Anatomical Record, EarlyView.
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro   +1 more
wiley   +1 more source

Comparison of Fracture Resistance and Bond Strength of e.max Crowns Restored with Fiber Post and Core with ENDO Crowns [PDF]

open access: yes, 2018
Objective: This study evaluated the Fracture Resistance and Bond strength of e.max crowns made with CAD/CAM technology on teeth restored with fiber post and core and compare them to Endo crowns.
Mathur, Rohit
core   +1 more source

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

open access: yesThe Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom   +4 more
wiley   +1 more source

Histopathologic Study of Caries at the Full and Partial Crowns Finish Line

open access: yesMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Bābul, 2010
BACKGROUND AND OBJECTIVE: The cast crowns replace lost tooth structure. Probably, recurrent caries occurs at the preparation margins and give rise to crown failure, affected by several factors, such as dental prosthesis design.
A Akhavan Tafti   +5 more
doaj  

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