Results 141 to 150 of about 92,493 (309)

Mechanisms of Osteoclastogenesis in Orthodontic Tooth Movement and Orthodontically Induced Tooth Root Resorption. [PDF]

J Bone Metab, 2023
Nakai Y, Praneetpong N, Ono W, Ono N.
europepmc   +1 more source

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

基于应力释放提高齿轮弯曲强度方法的研究

Jixie chuandong, 2014
Stress concentration of the gear tooth root fillet is an important factor to affect the bending fatigue strength of the gear.In order to improve the bending fatigue strength,the stress relief hole in the tooth surface is established to make root stress ...
赵向飞, 雷前召
doaj  

Biomimetics Design of Tooth Root Zone at Cylindrical Gears Profile. [PDF]

Biomimetics (Basel), 2023
Atanasovska I, Momcilovic D, Lazovic T, Marinkovic A, Soldat N.   +4 more
europepmc   +1 more source

Root resorption of reimplanted tooth [PDF]

Oral Surgery, Oral Medicine, Oral Pathology, 1972
openaire   +2 more sources

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

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

Influence of kinematic parameters and tooth geometry on gear tooth root load capacity

, 2017
Spur gear load carrying capacity and mass are primarily dependent of the tooth root stress. Geometric and kinematic parameters of gear teeth pairs produce multiple effects on the tooth root stress: through tooth root critical section location and root ...
Ristivojević, Mileta, Lazović, Tatjana
core  

Root resorption and impacted tooth position [PDF]

American Journal of Orthodontics and Dentofacial Orthopedics, 2020
Mukesh, Kumar, Manish, Goyal, Amandeep, Kaur, Madhur, Sharma   +3 more
openaire   +2 more sources

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