Results 31 to 40 of about 621,199 (307)

Computed tomographic analysis of the dental system of three Jurassic ceratopsians and implications for the evolution of tooth replacement pattern and diet in early-diverging ceratopsians

open access: yeseLife, 2022
The dental system of ceratopsids is among the most specialized structure in Dinosauria by the presence of tooth batteries and high-angled wear surfaces.
Jinfeng Hu   +5 more
doaj   +1 more source

Transient Displacement Response to Pulse Excitations on Periodontal Tissues [PDF]

open access: yes, 1988
In the field of dental study it is most fundamental and necessary to estimate the condition of periodontium. In order to examine a mechanical characteristics of periodontium, the theoretical displacement response to periodontal mechanical model (three ...
Isayama, Yoshiharu   +2 more
core   +1 more source

The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution [PDF]

open access: yes, 2015
The previous oldest known fossil snakes date from ∼100 million year old sediments (Upper Cretaceous) and are both morphologically and phylogenetically diverse, indicating that snakes underwent a much earlier origin and adaptive radiation.
Apesteguía, Sebastián   +3 more
core   +1 more source

Nyctereutes terblanchei: The raccoon dog that never was [PDF]

open access: yes, 2012
Fossils of the raccoon dog (genus Nyctereutes) are particularly rare in the African PlioPleistocene record, whilst the sole living representative, Nyctereutes procyonoides, is found in eastern Asia and parts of Europe. In southern Africa, only one fossil
Reynolds, Sally C.
core   +2 more sources

Alternative method to treat oroantral communication and fistula with autogenous bone graft and platelet rich firbin [PDF]

open access: yes, 2016
Removing a tooth from the jaw results in the occurrence of oroantral communication in beneficial anatomic conditions or in the case of a iatrogenic effect. Popularized treatments of the oroantral communication have numerous faults.
Borgiel-Marek, Halina   +3 more
core   +4 more sources

Statistical study of aca-talasemia, a review of thirty-eight cases appearing in the literatures [PDF]

open access: yes, 1959
1. With a view to grasp more simply and clearly the characteristics of this disease and in order to find a clue for prompt discovery of cases when encountered in future, the authors undertook a statistical study of the cases already reported by various ...
Doi, Katsusaburo   +2 more
core   +1 more source

Regenerative Surgery with Dental Implant Rehabilitation in a Haemophiliac Patient

open access: yesTH Open, 2021
This study aimed to describe the first case of regenerative surgery in haemophiliac implant. Patients with haemophilia often present dental problems. A multidisciplinary approach is suggested in case of dental surgeries to reduce the high bleeding risk ...
Christian Bacci   +4 more
doaj   +1 more source

Evolutionary relationships and systematics of Atoposauridae (Crocodylomorpha: Neosuchia): implications for the rise of Eusuchia [PDF]

open access: yes, 2016
Atoposaurids are a group of small-bodied, extinct crocodyliforms, regarded as an important component of Jurassic and Cretaceous Laurasian semi-aquatic ecosystems.
Mannion, PD, Tennant, JP, Upchurch, P
core   +3 more sources

Home - About - Disclaimer - Privacy