Results 91 to 100 of about 49,156 (303)

Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications

open access: yesThe Anatomical Record, EarlyView.
Abstract A subadult Moschognathus whaitsi from the Eastern Cape Province, South Africa, was scanned using synchrotron radiation X‐ray computed tomography (SRXCT). Its subadult state allowed the cranial bones and teeth to be identified and individually reconstructed in 3D.
Tristen Lafferty   +3 more
wiley   +1 more source

In vitro evaluation of the microhardness of bovine enamel exposed to acid solutions after bleaching

open access: yesBrazilian Oral Research, 2011
Acid erosion is a superficial loss of enamel caused by chemical processes that do not involve bacteria. Intrinsic and extrinsic factors, such as the presence of acid substances in the oral cavity, may cause a pH reduction, thus potentially increasing ...
Caio Gorgulho Zanet   +2 more
doaj   +1 more source

Complete Mouth Rehabilitation and Gastroesophageal Reflux Disease: Conventional and Contemporary Treatment Approaches [PDF]

open access: yes, 2017
This report describes the diagnosis and prosthodontic management of 2 patients with a history of chronic gastroesophageal reflux disease and worn dentition. Different treatment approaches were used for oral rehabilitation.
Chronopoulos, Vasilios   +4 more
core   +1 more source

Late Holocene climate and environmental changes in Kamchatka inferred from subfossil chironomid record. [PDF]

open access: yes, 2013
This study presents a reconstruction of the Late Holocene climate in Kamchatka based on chironomid remains from a 332 cm long composite sediment core recovered from Dvuyurtochnoe Lake (Two-Yurts Lake, TYL) in central Kamchatka.
de Hoog, Verena   +4 more
core   +1 more source

Ontogenetic changes and sexual dimorphism in the cranium and mandible of the Atlantic walrus (Odobenus rosmarus rosmarus L.)

open access: yesThe Anatomical Record, EarlyView.
Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx   +6 more
wiley   +1 more source

Effect of excessive trichloroisocyanuric acid in swimming pool water on tooth erosion [PDF]

open access: yes, 2014
The effect of chlorinated water on tooth erosion was studied. Tooth specimens were bathed in a pH cycling system of chlorinated water and artificial saliva under one of the following conditions: I) a 4 hour continuous cycle, and II) a 1 hour/ day cycle
Chanya Chuenarrom   +2 more
core  

Evaluating the Whitening and Microstructural Effects of a Novel Whitening Strip on Porcelain and Composite Dental Materials. [PDF]

open access: yes, 2017
AimsThe aim of this project was to evaluate the effects of 2 different whitening strips on color, microstructure and roughness of tea stained porcelain and composite surfaces.Methods54 porcelain and 72 composite chips served as samples for timed ...
Anbarani, Afarin   +5 more
core   +2 more sources

Early Pliocene Varanus (Squamata, Varanidae) remains from Megalo Emvolon, Thessaloniki, Greece

open access: yesThe Anatomical Record, EarlyView.
The article describes new cranial and postcranial varanid material from Megalo Emvolon Lower Pliocene vertebrate fossil site near Thessaloniki. The fossils, likely representing a single individual, are referred to Varanus cf. marathonensis. Abstract This study describes new fossil varanid material from a recently discovered fossil spot (MVL site) at ...
Chara Drakopoulou   +3 more
wiley   +1 more source

Skeletal Evidence for Leprosy in India by the Second Millenium B.C. [PDF]

open access: yes, 2009
Leprosy is a chronic infectious disease caused by _Mycobacterium leprae_ that affects almost 500,000 people worldwide^1^. The timing of first infection, geographic origin, and pattern of transmission of the disease are unknown^1-3^.
Gwendolyn Robbins   +6 more
core   +1 more source

Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira)

open access: yesThe Anatomical Record, EarlyView.
A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman   +4 more
wiley   +1 more source

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