Results 71 to 80 of about 76,223 (261)

Case of Pulp Regeneration Following Autologous Transplantation of an Incompletely Rooted Tooth

open access: yesCase Reports in Dentistry
Autologous tooth transplantation is a procedure that involves the replacement of a natural tooth with another at a new site or a surgically created recipient wound.
Hiroyuki Kimura   +2 more
doaj   +1 more source

Management of progressive root resorption in replantation to avulsion [PDF]

open access: yesKouqiang yixue
Avulsion of permanent teeth is the most severe type of tooth injury. Replantation has been widely recognized as the optimal method for managing avulsed permanent teeth in teenagers. Due to significant damage to periodontal tissue and death of periodontal
PENG Sihui, LUO Pan, LUO Pi, JIANG Jie
doaj   +1 more source

An osteohistological analysis of Triceratops (Ornithischia: Ceratopsidae) cranial ornamentation

open access: yesThe Anatomical Record, EarlyView.
Abstract Ceratopsids are among the most distinctive and well known extinct Cretaceous vertebrates, yet many details regarding the growth and composition of their cranial features are still not fully anatomically described or understood. In particular, striking cranial adornments such as the postorbital horns and parietal‐squamosal frill of Triceratops ...
Kyle D. Obuszewski   +2 more
wiley   +1 more source

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

渐开线少齿数齿轮齿形系数和应力修正系数的实验研究

open access: yesJixie chuandong, 2007
Experiment reseach about involute gear’s tooth form factor and stress correction factor by applying 30o tangent method is carried out. Tooth profile generating experiment to teeth number is carried out, measury tooth root chord at the critical section ...
孙伏, 张杰, 陈应舒
doaj  

Rethinking brachycephaly: Anatomical implications and health considerations in lagomorphs

open access: yesThe Anatomical Record, EarlyView.
Abstract Brachycephaly in domestic rabbits is increasingly perceived by welfare organizations as associated with significant health complications, particularly oral pathologies. Despite this perception, comparative anatomical research into rabbit brachycephaly is limited compared to that of dogs and cats, compelling an in‐depth examination of its ...
Helaina Cressy   +3 more
wiley   +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

Cortical bone distribution in the human mandibular symphysis: Ontogenic and morphometric approaches in archeological context

open access: yesThe Anatomical Record, EarlyView.
Abstract The human mandibular symphysis concentrates multiaxial loads during function and remodels throughout growth, but the precise mechanisms underlying cortical bone shape during growth remain relatively unexplored. Approaches based solely on thickness or external cortical contours provide only partial insights and do not capture the functional ...
Ana Ribeiro   +3 more
wiley   +1 more source

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

open access: yesThe 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   +9 more
wiley   +1 more source

Several Questions about Gear Single Tooth Pulsating Bending Fatigue Test

open access: yesJixie chuandong, 2017
The methods of the tooth root bending fatigue test both at home and abroad are introduced,and several questions about single tooth pulsating test are explained and discussed,such as ensure the load distribution along tooth length direction,clamped tooth ...
Liu Ziqiang, Chen Liang, Wan Wenming
doaj  

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