Results 101 to 110 of about 133,852 (304)

Particle motion and stain removal during simulated abrasive tooth cleaning [PDF]

, 2007
Stain removal from teeth is important both to prevent decay and for appearance. This is usually achieved using a filament-based toothbrush with a toothpaste consisting of abrasive particles in a carrier fluid.
Addy, Allen, Barbakow, Baxter, Condon, Dawson, Forward, Harrington, Heath, Hefferren, Jardret, Joiner, Lewis, Lewis, MacPherson, Manly, Phaneuf, R. Lewis, R.S. Dwyer-Joyce, S.C. Barber, Sheen, Stookey, White   +22 more
core   +2 more sources

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

Study on the Time-varying Mesh Stiffness of Speed-increasing Gear Pair with Non-uniform Wear

Jixie chuandong, 2019
Taking an involute cylindrical speed-increasing gear pair as the research object, the tooth surface contact pressure and the relative sliding velocity are deduced to establish the non-uniform wear model of the spur gear pair based on the Hertz contact ...
He Zeyin, Tang Weiyi, Lin Tengjiao, Sun Shizheng   +3 more
doaj  

Research progress on the application of digital technology in the diagnosis and treatment of tooth wear [PDF]

口腔疾病防治
Tooth wear is a common and complex oral problem, with a gradually increasing global incidence. Tooth wear not only affects the oral function and esthetics of patients but may also lead to tooth sensitivity, temporomandibular joint diseases, and other ...
HE Yi, WANG Dingjie, XIAO Yuhong
doaj   +1 more source

Dental Microwear From Natufian Hunter-Gatherers and Early Neolithic Farmers: Comparisons Within and Between Samples [PDF]

, 2006
Microwear patterns from Natufian hunter-gatherers (12,500–10,250 bp) and early Neolithic (10,250–7,500 bp) farmers from northern Israel are correlated with location on facet nine and related to an archaeologically suggested change in food preparation ...
Baker, Bar Yosef, Bar Yosef, Bar Yosef, Bar Yosef, Bar Yosef, Blaeuer, Boyde, Bullington, Clutton-Brock, Colledge, Covert, Eisenmann, Eshed, Eshed, Every, Galil, Galil, Garfinkel, Garfinkel, Garrod, Gopher, Gordon, Gordon, Goring-Morris, Goring-Morris, Grine, Grine, Grine, Gügel, Harmon, Henry, Hershkovitz, Hershkovitz, Hershkovitz, Hillman, Hillman, Hopf, Kay, Kenyon, Khera, King, Lalueza, Lalueza, Legge, Lucas, Macho, Mahoney, Mahoney, Maier, Martin, Mellaart, Mills, Molleson, Molleson, Moore, Moss-Salentijn, Norusis, Norusis, Noy, Noy, Noy, Noy, Nystrom, Pastor, Perrot, Perrot, Peters, Piperno, Pough, Puech, Puech, Puech, Pérez-Pérez, Pérez-Pérez, Rensberger, Rensberger, Robson, Rollefson, Ryan, Schmidt, Sillen, Sillen, Smith, Smith, Smith, Steckelis, Strait, Tabachnick, Teaford, Teaford, Teaford, Teaford, Teaford, Teaford, Teaford, Teaford, Teaford, Teaford, Ungar, Ungar, Ungar, Ungar, Ungar, Ungar, Valla, Walker, Walker, Walker, Walker, Willcox, Willcox, Wright, Zar   +113 more
core   +1 more source

Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny

The Anatomical Record, EarlyView.
Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund, Frederik P. Wolvaardt, Roger M. H. Smith, Jaganmoy Jodder, Julien Benoit   +4 more
wiley   +1 more source

Investigating the performance of TiN and TiAIN coatings on milling cutter used for machining bimetal steel strip [PDF]

, 2009
Surface engineering of cutting tools (single point or multipoint) through advanced coatings (e.g., TiN) has contributed towards considerable improvement of tool life, productivity and machining quality [1] by modifying the tool substrate.
Haider, Julfikar, Sarwar, Mohammed
core  

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

The Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo, Ricardo Araújo, Bruce S. Rubidge, Michael O. Day, Kathleen N. Dollman, Julien Benoit   +5 more
wiley   +1 more source

The Prevalence of Tooth Wear in an Adult Population from the Eastern Province of Saudi Arabia

Clinical, Cosmetic and Investigational Dentistry, 2020
Khalifa S Al-Khalifa Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi ArabiaCorrespondence: Khalifa S Al-KhalifaCollege of Dentistry, Imam Abdulrahman Bin Faisal University, P.O.
Al-Khalifa KS
doaj  

A new species of Dipoides from the Pliocene of eastern Oregon [PDF]

, 1934
Numerous remains of castoroid rodents from the Tertiary of North America have been referred to the Old World genus Dipoides Jaeger. Apparently, most of the material represents types generically distinct from Dipoides, and the genus is actually ...
Wilson, Robert W.
core