Results 91 to 100 of about 13,948 (188)

Energy evolution and key parameters of coal breaking by flexible cutting tools

open access: yesMeitan xuebao
To solve the difficulties such as the small range of unloading pressure in hard coal seams and poor permeability enhancement effect, based on the water dynamic flexible cutting coal unloading and permeability enhancement technology, the combination of ...
Yong LIU   +4 more
doaj   +1 more source

An in vitro study on the effect of organic derived nano hydroxyapatite on dentine permeability

open access: yes, 2023
Dentine sensitivity, hinders oral hygiene practices and limits consumption of specific foods and drinks. Studies have shown that, the severity of dentine sensitivity is related to the permeability of dentine tubules such that the more permeable the ...
Nyongesa, Christine Khanili
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EVALUATION OF EFFICIENCY OF CARIES PREVENTION BY STABILIZED FLUORIDE TOOTHPASTES

open access: yesУкраїнський стоматологічний альманах, 2018
Introduction. Laboratory and clinical evaluation of the efficiency of stabilized fluoride toothpastes compared to ones without fluoride to prevent dental caries in students has been conducted.
N. Marchenko, A. Politun, T. Tereshyna
doaj  

[The influence of stress-strain processes in tooth enamel on the marginal permeability of class i restorations with a different design of the edge of the carious cavity].

open access: yesWiadomosci lekarskie (Warsaw, Poland : 1960), 2018
Introduction: Of the factors affecting the marginal permeability of restorations in the teeth, the state of stress-strain processes in the enamel with different design of the edge of the carious cavity has been poorly studied. The aim of this research was to study the influence of stress-strain processes in tooth enamel on the marginal permeability of ...
openaire   +1 more source

Effect of bleaching agents containing fluoride or calcium on enamel microhardness, roughness and permeability

open access: yes
evaluate the effect of different in-office bleaching agents on the permeability, roughness and surface microhardness of human enamel. Methods: For evaluation of roughness and microhardness, 40 hemi-faces of 20 premolars were subjected to initial ...
Charles Alex Rauen, Júlio Cezar Chidoski Filho, Bruna Fortes Bittencourt, Giovana Mongruel Gomes, João Carlos Gomes, Osnara Maria Mongruel Gomes
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Effect of adhesive system and application strategy on reduction of dentin permeability

open access: yesBrazilian Oral Research, 2012
This study evaluated the effect of adhesive systems and application strategies on dentin hydraulic conductance (HC). The buccal enamel was removed from bovine incisors to simulate laminate cavity preparations.
Adriana Oliveira Carvalho   +4 more
doaj  

Influência do cimento endodôntico na resistência de união do reforço radicular com resina composta e pinos de fibra [PDF]

open access: yes, 2011
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências da Saúde. Odontologia.O objetivo deste estudo, in vitro, foi avaliar a influência do tipo de cimento utilizado na obturação do canal radicular em relação à resistência de união (
Santos, Geórgia Linhares dos
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Avaliação da influência de resíduos de acessórios utilizados na hibridização dos tecidos dentais na resistência de união adesiva [PDF]

open access: yes, 2013
Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Curso de Odontologia.O objetivo deste trabalho foi verificar por meio de MEV a presença de resíduos de acessórios utilizados na hibridização dos tecidos
Theodoro, Camila
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The Epidemiology, Aetiology, and Histopathology of Developmental Enamel Defects in Human Teeth

open access: yes, 1983
PhDThe prevalence of developmental enamel defects in t11 permanent dentition was investigated in a sample of 2923 East London schoolchildren aged 5 to 15 years. Enamel discolourations and hypoplasias were identified using well defined criteria.
Smith, Joyce Mary, Smith, J.M.
core  

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