Results 11 to 20 of about 3,528,368 (298)

A Literature Review of Stainless Steel Crown for Permanent Molars: Indications, Survival, Periodontal and Radiographic Findings [PDF]

open access: yesJournal of Dentistry
Stainless steel crowns (SSCs) are the preferred choice for restoring primary molars with extensive caries. However, they may be indicated for permanent molars in certain cases as well.
Pooya Vatankhah   +2 more
doaj   +1 more source

Severe trauma in young permanent tooth: a case report

open access: yesRGO: Revista Gaúcha de Odontologia, 2020
Dentoalveolar trauma is a severe traumatic injury involving alveolar bone and dental structures. Like any trauma, it can leave irreparable sequelae and even cause tooth loss.
Ana Luiza Costa Silva de OMENA   +5 more
doaj   +1 more source

Two-Year Longevity of Posterior Zirconia Multi-Unit Fixed Dental Prostheses with Monolithic Occlusal Surface

open access: yesApplied Sciences, 2021
In this prospective clinical trial we observed the 2-year clinical performance of posterior tooth-supported multi-unit fixed dental prostheses (FDP) fabricated from zirconia with monolithic occlusal surfaces.
Elisabeth Pahncke   +5 more
doaj   +1 more source

Employment Expectations and Gross Flows by Type of Work Contract [PDF]

open access: yes, 2004
There is growing interest in understanding firms’ temporary and permanent employment practices and how institutional changes shape them. Using data on Spanish establishments, we examine: (a) how employers adjust temporary and permanent job and worker ...
A Cabrales   +29 more
core   +1 more source

Psychosocial factors and work related sickness absence among permanent and non-permanent employees [PDF]

open access: yes, 2004
Study objective: To examine the association between psychosocial work factors and work related sickness absence among permanent and non-permanent employees by sex.Design: A cross sectional survey conducted in 2000 of a representative sample of the ...
Amick, BC   +4 more
core   +1 more source

Mapping of proximal enamel thickness in permanent teeth

open access: yesBrazilian Journal of Oral Sciences, 2015
Aim: Knowledge of enamel thickness is relevant to perform stripping during orthodontic treatment. Thus, proximal enamel measurements of human permanent teeth were compared in this study.
Flávio Vellini Ferreira   +3 more
doaj   +1 more source

Boolean Functions and Permanents of Sylvester Hadamard Matrices

open access: yesMathematics, 2021
One of the fastest known general techniques for computing permanents is Ryser’s formula. On this note, we show that this formula over Sylvester Hadamard matrices of order 2m, Hm, can be carried out by enumerating m-variable Boolean functions with an ...
José Andrés Armario
doaj   +1 more source

The Dittert's function on a set of nonnegative matrices

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
Let Kn denote the set of all n×n nonnegative matrices with entry sum n. For X∈Kn with row sum vector (r1,…,rn), column sum vector (c1,…,cn), Let ϕ(X)=∏iri+∏jcj−perX. Dittert's conjecture asserts that ϕ(X)≤2−n!/nn for all X∈Kn with equality iff X=[1/n]n×n.
Suk Geun Hwang, Mun-Gu Sohn, Si-Ju Kim
doaj   +1 more source

Effects of some Peruvian non-distilled alcoholic beverages on dental erosion

open access: yesJournal of Oral Research, 2021
Objective: To determine the erosive effect of pieces of permanent teeth exposed to non-distilled alcoholic beverages. Material and Methods: This study takes a quantitative approach, with an explanatory scope, descriptive and correlational, with a pure ...
Monica Quispe-Zuta   +6 more
doaj   +1 more source

Topology optimized permanent magnet systems [PDF]

open access: yes, 2017
Topology optimization of permanent magnet systems consisting of permanent magnets, high permeability iron and air is presented. An implementation of topology optimization for magnetostatics is discussed and three examples are considered.
Bahl, C. R. H.   +2 more
core   +2 more sources

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