Results 81 to 90 of about 29,680 (285)

Union of maxillary second and third molar [PDF]

open access: yes, 1968
Pathological union is rare between permanent teeth. A case study of a male aged thirty, had pain and a swelling associated with two partly erupted permanent upper molars is described. An incision was made and the mucosa reflected.
Boffa, Charles J.
core  

Geological Substrate Is Related to Tooth Senescence and Population Dynamic: The Case Study of Alpine Chamois (Rupicapra rupicapra L.)

open access: yesIntegrative Zoology, EarlyView.
In Alpine chamois, the complete wear of the first molar coincides with the beginning of senescence and the progress of tooth wear on calcareous substrate is slower than the one on other substrates, increasing life expectancy. Thus, the first molar wear may actually be considered as an effective descriptor of senescence stage.
Roberta Chirichella, Marco Apollonio
wiley   +1 more source

Mineral Trioxide Aggregate Material Use in Endodontic Treatment: A Review of the Literature [PDF]

open access: yes, 2008
Objective The purpose of this paper was to review the composition, properties, biocompatibility, and the clinical results involving the use of mineral trioxide aggregate (MTA) materials in endodontic treatment.
Berzins, David W.   +3 more
core   +1 more source

A capture–recapture framework for combining biologging data with physical captures to decompose and estimate demographic rates: Simulations across life cycles and application to polar bears

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Estimating demographic rates of wild populations is critical to understanding their dynamics but can be challenging because large amounts of data are required, and parts of the life cycle of individuals may be unobserved. In numerous research programmes, capture–recapture (CR) data and biologging data are collected in parallel.
Marwan Naciri   +5 more
wiley   +1 more source

The mineral content of the hard dental tissue of mesiodens

open access: yesBiomedical Papers, 2018
Objective: Mesiodens is the most common form of supernumerary tooth mainly located between the maxillary central incisors. Its etiology is not completely understood but both genetic and environmental factors are assumed.
Sanja Tanaskovic-Stankovic   +5 more
doaj   +1 more source

Does chewing xylitol gum improve oral health? [PDF]

open access: yes, 2013
Popular chewing gum brands such as Orbit and Trident advertise that chewing their gum promotes oral health due to the presence of xylitol. This compound has interested oral health researchers since the 1970 s, but recent advances in research have been ...
Rouse, Thomas
core   +2 more sources

Effect of Intracanal Medications on the Viability of Human Periodontal Ligament‐Derived Mesenchymal Stem Cells

open access: yesAustralian Endodontic Journal, EarlyView.
ABSTRACT This in vitro study evaluated the effects of intracanal medications on the metabolic activity and adhesion of human periodontal ligament‐derived mesenchymal stem cells. Tested groups included Control (without medication), Triple Antibiotic Paste (TAP), Double Antibiotic Paste (DAP), calcium hydroxide with saline, calcium hydroxide with 2 ...
Arian Braido   +7 more
wiley   +1 more source

Reservas corporales y tasa de preñez del ciervo colorado introducido en Patagonia (Argentina) después de un período de sequía [PDF]

open access: yes, 2001
El ciervo rojo (Cervus elaphus) fue introducido en Patagonia en la década de 1920 y ha alcanzado densidades altas en ciertas áreas del ecotono entre el bosque y la estepa.
Fluck, Werner Thomas
core  

Trace Element Patterns in Juvenile Wild Chimpanzee Dentitions

open access: yesArchaeometry, EarlyView.
ABSTRACT Trace elements are used to infer mammalian early‐life diets, environmental toxins, dispersal patterns, stress histories, and weaning ages. Here, we employ laser ablation‐inductively coupled plasma‐mass spectrometry (LA‐ICP‐MS) to reveal elemental patterns in our closest living relatives, chimpanzees.
Tanya M. Smith   +5 more
wiley   +1 more source

Aging steller sea lions by growth layer groups in teeth

open access: yesWildlife Society Bulletin, 2019
Accurate age determination of individuals is crucial in estimating age structure in populations as well as age‐specific rates of reproduction and survival. We examined growth layer groups (GLGs) in the canine, incisor, and postcanine teeth of Steller sea
Takeomi Isono   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy