Dentinal Tubules
Mostrando 13-24 de 61 artigos, teses e dissertações.
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13. In vivo model for microbial invasion of tooth root dentinal tubules
ABSTRACT Objective Bacterial penetration of dentinal tubules via exposed dentine can lead to root caries and promote infections of the pulp and root canal system. The aim of this work was to develop a new experimental model for studying bacterial invasion of dentinal tubules within the human oral cavity. Material and Methods Sections of human root dentin
J. Appl. Oral Sci.. Publicado em: 2016-04
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14. A new improved protocol for in vitro intratubular dentinal bacterial contamination for antimicrobial endodontic tests: standardization and validation by confocal laser scanning microscopy
Objectives To compare three methods of intratubular contamination that simulate endodontic infections using confocal laser scanning microscopy (CLSM). Material and Methods Two pre-existing models of dentinal contamination were used to induce intratubular infection (groups A and B). These methods were modified in an attempt to improve the model (group C).
J. Appl. Oral Sci.. Publicado em: 21/07/2015
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15. Erratum: Resin-based sealer penetration into dentinal tubules after the use of 2% cholorhexidine gel and 17% EDTA in vidro study
Braz. J. Oral Sci.. Publicado em: 10/02/2015
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16. Ex vivo evaluation of three instrumentation techniques on E. faecalis biofilm within oval shaped root canals
The objective of the present study was to assess the effectiveness of reciprocating instrumentation in disinfecting oval-shaped root canals infected with Enterococcus faecalis. Forty-five human lower premolars were infected with a culture of E. faecalis (ATCC 29212) for 28 days. Five other teeth that were neither contaminated nor instrumented were used as co
Braz. oral res.. Publicado em: 23/01/2015
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17. Resin-based sealer penetration into dentinal tubules after the use of 2% chlorhexidine gel and 17% EDTA: in vitro study
Aim: To evaluate, by confocal laser scanning microscopy (CLSM), the influence of 17% EDTA final irrigation on the penetration of an endodontic resin-based sealer into dentinal tubules after use of 2% chlorhexidine gel. Methods: Forty extracted bovine incisors were instrumented according to the groups: G1 - root canal preparation with 2% chlorhexidine gel (n=
Braz. J. Oral Sci.. Publicado em: 2014-12
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18. Comparison of different retreatment techniques and root canal sealers: a scanning electron microscopic study
The aim of this study was to evaluate the effectiveness of two retreatment techniques, in terms of the operating time and scanning electron microscopy (SEM) results, in removing three different root canal sealers from root canals that were previously filled with gutta-percha. Sixty extracted single-rooted human premolars were divided into three groups and fi
Braz. oral res.. Publicado em: 16/05/2014
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19. Effect of a desensitizing dentifrice on the bond strength of different adhesive systems
AIM: This in vitro study evaluated the effect of using a dental hypersensitivity treatment on the bond strength to dentin of etch-and-rinse and self-etching simplified adhesive systems. METHODS: 40 healthy molars were used. The crowns of teeth were removed at the dentinoenamel junction, and remaining roots were sectioned in the mesiodistal direction along th
Braz. J. Oral Sci.. Publicado em: 2013-06
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20. Influência da limpeza mecânica com e sem o uso do microscópio operatório na resistência adesiva intrarradicular / Influence of mechanical cleaning with and without the use of the operating microscope in intraradicular adhesive strength
In endodontic treatment, there is an imperative need to restore the tooth, reestablishing its functions, since there is always a risk of recontamination of the root canal system and fractures. These risks are higher when there is loss of dental structure, requiring intraradicular posts to hold the restoration procedures in place. For the definitive and immed
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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21. Effect of desensitizing toothpastes on dentin
The objective of this study was to analyze the effects of toothbrushing with desensitizing toothpastes on dentin permeability and dentinal tubule occlusion. Fifty rats provided two hundred incisor teeth divided into five groups: DW, brushed with distilled water (control); FT, brushed with fluoride toothpaste; SCT, brushed with strontium chloride toothpaste;
Braz. oral res.. Publicado em: 2012-10
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22. Assessment of ion diffusion from a calcium hydroxide-propolis paste through dentin
This study evaluated the ability of ions from a non-alcoholic calcium hydroxide-propolis paste to diffuse through dentinal tubules. Thirty-six single-rooted bovine teeth were used. The tooth crowns were removed, and the root canals were instrumented and divided into 3 groups: Group 1 - calcium hydroxide-propylene glycol paste; Group 2 - calcium hydroxide-sal
Brazilian Oral Research. Publicado em: 2012-08
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23. Ausência de correlação entre a penetração do cimento AH Plus nos túbulos dentinários e a qualidade do selamento / Lack of correlation between AH Plus sealer penetration into dentinal tubules and sealability
O presente estudo objetivou testar experimentalmente a existência da possível correlação entre a penetração de cimento nos túbulos dentinários e a qualidade do selamento. Foram utilizados 60 incisivos centrais superiores humanos que formaram um único grupo experimental. Após a eliminação das porções coronárias, as raízes foram padronizadas em
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2010
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24. A novel bioactive glass-ceramic for treating dentin hypersensitivity
Dentin hypersensitivity (DH) is a painful response to stimulus applied to the open dentinal tubules of a vital tooth. It's a common oral condition, however, without an ideal treatment available yet. This work evaluated in vitro the effect of micron-sized particles from a novel bioactive glass-ceramic (Biosilicate) in occluding open dentinal tubules. A dentin
Brazilian Oral Research. Publicado em: 2010-12