Results 101 to 110 of about 30,332 (300)
The Anatomical Record, EarlyView.Abstract In a large sample of adult crab‐eating macaques, we quantified sexual dimorphism in size, shape, and covariance across the whole skull and among anatomical regions of the cranium and mandible. All regions showed significant mean sex differences, but the magnitude of size and shape dimorphism varied substantially.
Andrea Cardini, Paul O'Higgins
wiley +1 more source
Tooth wear among five-year-old children in Jakarta, Indonesia
BMC Oral Health, 2019 Background This study aimed to evaluate the prevalence of tooth wear among preschool children in Jakarta, Indonesia, and examine the risk factors associated with its occurrence. Methods An epidemiological survey was conducted with a cross-sectional study
Diah Ayu Maharani +6 more
doaj +1 more source
Relation between wear and tooth width modification in spur gears
, 2007 In this experimental study, width modification of a spur gear was investigated to fix instantaneous pressure changes along single meshing area on the gear profile. In this gear, variable pressure distribution caused by the single and double teeth meshing
Imrek, Huseyin, Duzcukoglu, Hayrettin
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 +4 more
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The Prevalence and Severity of Tooth Wear in Type 2 Diabetic Patients
International Journal of Dentistry, 2018 Objective. To assess the prevalence and severity of tooth wear in type 2 diabetic patients. Methods. Attendees at a diabetic clinic at Wiang Pa Pao Hospital in Chiang Rai province, Thailand, were invited to take part in this cross-sectional study.
Patcharawan Srisilapanan +2 more
doaj +1 more source
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
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Genome-Wide Association Study of Erosive Tooth Wear in a Finnish Cohort.
, 2018 Erosive tooth wear is defined as irreversible loss of dental tissues due to intrinsic or extrinsic acids, exacerbated by mechanical forces. Recent studies have suggested a higher prevalence of erosive tooth wear in males, as well as a genetic ...
Laitala, Marja-Liisa +17 more
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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 +5 more
wiley +1 more source
The Anatomical Record, EarlyView.Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox +8 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 +3 more
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