Results 91 to 100 of about 38,765 (286)

Anatomy of the Tooth Apex and Trends in Achieving the Ideal Length of Root Canal Filling

open access: yes
Studies on the anatomy and morphology of the apical part of the tooth root canal present a significant area of interest and challenge for endodontists. Research indicates that the position of the apical constriction, apical foramen, and the cementdentin ...
Emini, Lindhana
core   +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

Single tooth FE model including dimensions in millimetres.

open access: yes, 2014
(a) the whole 3D single tooth model; (b) section through tooth, PDL and alveolar bone showing the location of the link elements which span the PDL layer connecting the tooth and alveolar bone; (c) section through the centre of the model showing the tooth,
Ulrich Witzel (306505)   +4 more
core   +1 more source

Impacted Maxillary Canine with Curved Apex

open access: yes, 2021
Introduction: Maxillary canines play a crucial role in dental and facial aspect, arch expansion, and efficient occlusion. When surgical exposure measures cannot be executed or the patient does not agree to take the treatment, autotransplantation should ...
Esquivel, Jonathan   +3 more
core   +1 more source

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

open access: yesThe 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
wiley   +1 more source

In vitro evaluation of the consistency of two electronic apex locators [PDF]

open access: yes, 2008
The purpose of this study was to evaluate the consistency of two electronic apex locators in vitro model. Materials consisted of fifty two extracted premolars and two electronic apex locators; Root ZX (J.
이승종, 노병덕, 김의성
core  

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

open access: yesThe 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

Evaluation of the reinforcement effect on teeth with different apical foramen diameters of retrograde or orthograde MTA application with internal matrix

open access: yesActa Odontologica Turcica, 2016
OBJECTIVE: The aim of this study was to determine the effect of the apical foramen diameter and different application methods of Mineral Trioxide Aggregate (MTA) on the fracture resistance of simulated immature teeth using a Universal Testing Machine.
Emre Bayram   +2 more
doaj   +1 more source

Minimally invasive microsurgical management of the necrotic, immature apex tooth: Case report and treatment recommendations

open access: yes, 2013
Objective: The purpose of this case report is to introduce a minimally invasive microsurgi¬cal technique for the treatment of the necrotic, immature apex tooth in adult patients and to provide treatment recommendations.
Zervaki, A., Chaniotis, A.
core  

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

open access: yesThe 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

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