Results 31 to 40 of about 65,756 (216)

Systematics and distributions of the genera Cyrtusa Erichson, Ecarinosphaerula Hatch, Isoplastus Horn, Liocyrtusa Daffner, Lionothus Brown, and Zeadolopus Broun of the United States and Canada (Coleoptera: Leiodidae: Leiodinae: Leiodini) [PDF]

open access: yes, 2013
The following genera of Leiodini (Coleoptera: Leiodidae: Leiodinae) of the continental United States and Canada are reviewed: Cyrtusa Erichson, with two species; Isoplastus Horn, with two species (one new); Liocyrtusa Daffner, with three species ...
Cook, Joyce, Peck, Stewart B.
core   +2 more sources

Squalicorax Chips a Tooth: A Consequence of Feeding-Related Behavior from the Lowermost Navesink Formation (Late Cretaceous: Campanian-Maastrichtian) of Monmouth County, New Jersey, USA

open access: yesGeosciences, 2012
Chipped and broken functional teeth are common in modern sharks with serrated tooth shape. Tooth damage consists of splintering, cracking, and flaking near the cusp apex where the enameloid is broken and exposes the osteodentine and orthodentine.
John A. Chamberlain, Martin A. Becker
doaj   +1 more source

Tooth embedding medium influences the accuracy of electronic apex locator. [PDF]

open access: yesActa odontologica latinoamericana : AOL, 2013
This study evaluated the influence of tooth embedding media on the accuracy ofan electronic apex locator. The root canal length of 20 human mandibular canines was measured by inserting a 15 K-file into the root canal up to the apical foramen. The distance was measured with a digital caliper.
Guerreiro-Tanomaru, Juliane M   +4 more
openaire   +1 more source

The window approach for extraction of tooth root fragments: a different soft tissue management [PDF]

open access: yes, 2018
Different techniques have been proposed for the removal of the apical portion of fractured teeth. The window approach was proposed in the past to remove a tooth root fragment through a buccal bone opening at the level of fragment.
Colaci, R., Pietrantoni, A., Pippi, R.
core   +1 more source

Management of Ellis Class-IV Fractured Tooth With an Open Apex: A Case Report

open access: yesCureus, 2022
Dental professionals face difficulty in managing "immature non-vital teeth with an open apex." It is considered to be challenging because, in this situation, root canal filling material should be confined within the boundaries of the root canal without extruding peri-apically. Apexification tries to create a hard tissue barrier that will cause the open
Gupta, Radhika   +4 more
openaire   +2 more sources

A key to the New World species of holostipous Lejeuneaceae [PDF]

open access: yes, 1990
A synopsis and key emphasizing vegetative characters are provided for the 967species (in 36 genera) of Lejeuneaceae with undivided underleaves recorded from the New ...
Gradstein, Stephan Robbert
core  

A new species of Polyphylla Harris from peninsular Florida (Coleoptera: Scarabaeidae: Melolonthinae) with a key to species of the pubescens species group [PDF]

open access: yes, 2009
Polyphylla starkae Skelley, new species (Coleoptera: Scarabaeidae: Melolonthinae: Melolonthini), is described from peninsular Florida, USA.
Skelley, Paul E.
core   +1 more source

Regeneration of immature incisor using platelet rich fibrin: report of a novel clinical application

open access: yesBMC Oral Health, 2023
Background Endodontic treatment of young permanent teeth with necrotic pulp presents a clinical challenge for the dentist, and conventional endodontic treatment will result in tooth fracture along with a poor prognosis.
Jishnu Krishna Kumar   +2 more
doaj   +1 more source

A re-evaluation of Cheilolejeunea subgenus Xenolejeunea [PDF]

open access: yes, 1992
Cheilolejeunea subgenus Xenolejeunea Kachroo & Schust. is emended to account for variability observed in stem anatomy and lobule structure. Cheilolejeunea subgenus Tegulilejeunea Schust. is reduced to synonymy with subgenus Xenolejeunea.
Thiers, Barbara M.
core  

Aquatic Hydrophilidae and Hydraenidae of Wisconsin (Coleoptera). II. Distribution, Habitat, Life Cycle and Identification of Species of Hydrobiini and Hydrophilini (Hydrophiudae: Hydrophilinae) [PDF]

open access: yes, 2017
Nine genera and 30 species of Hydrobiini and 3 genera and 12 species of Hydrophilini were found in Wisconsin, including a new species of Laccobius. Life cycles of all species of lentic Hydrobiini were similar; adults overwinter in terrestrial habitats ...
Hilsenhoff, William L
core   +2 more sources

Home - About - Disclaimer - Privacy