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Results for “Tooth Permeability”

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At least 37 records · Page 2Linked to original sources
PubMed1976

Chelating agents: their effect on the permeability of root canal dentin.

An in vitro assessment was made of the ability of three chelating agents used in endodontics to alter the dye penetration of dentinal tubules from the root canal surface. The experiment and control for this study were within the same root. It was found that all three agents significantly reduced the dye penetration into dentin, but there was no difference among the agents in the degree of reduction of dye penetration.

Chelating Agents↗
PubMed1989

The relationship between dentin bond strengths and dentin permeability.

The relationship between dentin permeability and the shear bond strength of Scotchbond/Silux was investigated. In the presence of a smear layer, there was no correlation between dentin permeability and dentin bond strengths. After removal of the smear layer with acids, there was an inverse relationship between dentin permeability and dentin bond strength. The bond strengths were high when dentin permeability was low and decreased as dentin permeability increased. Creation of smear layers with abrasive paper or dental burs reduced permeability by 80-85%. When Scotchbond/Silux bonds were made to such smear layers and then broken, the permeability of the dentin remained low. If the smear layer was removed by acid-etching prior to bonding, the permeability increased. When these bonds were broken, the permeability of the dentin remained elevated.

Adolescent↗
PubMed1990

Pathogenic mechanisms in pulpal disease.

The unpredictable response of the dental pulp to clinical insults is frequently encountered in the daily practice of dentistry. Even though the pulp often shows remarkable capacity for recovery, painful symptoms and pulp tissue breakdown may follow such clinical insults as caries, dental trauma, or operative dental procedures. In recent years pulp biology research has provided a deeper insight into the basic mechanisms that govern pulpal defense and repair. This communication focuses on dentin permeability to bacterial antigens and how bacterial elements may be processed and dealt with by the dentin-dental pulp complex.

Antigens, Bacterial↗
PubMedDate not supplied

Protective effects of cavity liners on dentin.

Smear layers are very soluble in acidic solutions. Removal of smear layers increases dentin permeability and the potential for pulpal irritation. In this study, smear layers were treated with either saline, Barrier, Copalite, LC-Scotchbond, Hydroxyline, or DDS 1 & 2 to determine how well they protected the dentin from subsequent acid attack with 37% phosphoric acid for two minutes. Using both SEM and permeability measurements, the materials were ranked from least to most effective as: Saline less than Barrier = Copalite less than Hydroxyline = Scotchbond = DDS 1 & 2.

Acid Etching, Dental↗
PubMedDate not supplied

["In vitro" analysis of the dentin permeability of the apical third of the root as a function of changes in auxiliary chemicals used in instrumentation].

We analyzed the possible percentage variations of dentinal penetration of the methylene blue solution in the apical third, in human teeth pulled out, after it's preparation, utilizing files type K-Flex, and five auxiliary chemical substances. Results have shown that there is a significant difference among the percentage of the dye penetration and among the auxiliary chemical substances used for the chemical-mechanic preparation. We can also prove true that, for apical region, the Endo PTC was the one that showed the greatest percentage of penetration.

Dental Leakage↗