Results 51 to 60 of about 21,432 (219)

Dental arch widths in the early and late permanent dentitions of a Nigerian population

Nigerian Dental Journal, 2009
Objective: This study was carried out in a Nigerian population to assess arch widths at two different stages of dentition, to observe the comparative changes which may occur, and to determine the presence or absence of sexual dimorphism in arch ...
I. A. Aluko, O. O. daCosta, M. C. Isiekwe   +2 more
doaj   +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

Molariform Mesiodens in Primary Dentition

Case Reports in Dentistry, 2013
Mesiodens is a midline supernumerary tooth commonly seen in the maxillary arch, and incidence of molariform mesiodens in the maxillary midline is rare in permanent dentition and extremely uncommon in primary dentition.
Sachin B. Mangalekar, Tajammul Ahmed, M. Zakirulla, Halawar Sangmesh Shivappa, F. B. Bheemappa, Chandrashekar Yavagal   +5 more
doaj   +1 more source

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

Widespread distribution of large silesaurids evidenced by a new record from the Middle Triassic of southwest Gondwana

The Anatomical Record, EarlyView.
The largest silesaurid known from South America is described here, demonstrating that silesaurids reached large body sizes in southwestern Gondwana. This discovery further underscores the widespread geographic distribution and temporal persistence of large silesaurids across Pangea, despite faunal turnovers and environmental events such as the Carnian ...
Rodrigo Temp Müller
wiley   +1 more source

An Evaluatıon Of Occlusıon Of Chıldren In The Prımary And Mıxed Dentıtıon

Turkish Journal of Orthodontics, 1996
The occlusion in the primary and mixed dentition stages have evaluated. Among the children being examined, highest rates for class 1 incisor occlusion, flush terminal plane in decidious dentition and class 1 molar occlusion in permanant molars found as ...
Halil Kayalıbay, Meryem Uzamış, Gülgün İkören   +2 more
doaj   +1 more source

Early stages of tooth development in the harbor porpoise Phocoena phocoena

The Anatomical Record, EarlyView.
Abstract Here we describe the stages of tooth development in toothed whales on the basis of the harbor porpoise (Phocoena phocoena). The aim of the study was to find out whether these stages are identical to those of other mammals analyzed so far although toothed whales are homodont and monophyodont.
Lasse M. Mathes, Lennart Müller‐Thomsen, Stefan Huggenberger   +2 more
wiley   +1 more source

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

The Anatomical Record, EarlyView.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti, Kenshu Shimada, João Paulo C. B. da Silva   +2 more
wiley   +1 more source

A Comparative Analysis of Differences in Salivary hBD-2 Levels and Their Correlation with Dental Caries and Unstimulated Saliva pH in Children with Primary and Permanent Dentition

Diagnostics
Background/Objectives: This exploratory study aimed to investigate potential differences and associations between salivary hBD-2 levels and dental caries, as well as between unstimulated salivary pH and salivary hBD-2 levels, in children with primary and
Branislava Stojković, Marija Igić, Tatjana Jevtović Stoimenov, Olivera Tričković Janjić, Aleksandra Ignjatović, Miloš Kostić, Milica Petrović, Simona Stojanović, Nikola Živković, Ana Stojanović, Zorana Veličković   +10 more
doaj   +1 more source

The Loss of First Permanent Molar in Young Patients

Česká Stomatologie a Praktické Zubní Lékařství, 2013
Introduction: The loss of first permanent molar significantly reduces the biological quality of the dentition. In addition to prosthetic rehabilitation in indicated cases, we can also take advantage of orthodontic space closure with mesial shift of the ...
M. Koťová, J. Hovorka
doaj   +1 more source