ALGINATOS DENTALES PDF

ALGINATOS DENTALES PDF

Facultad de Medicina SX /S X Cytotoxicity of Dental Alginates Citotoxicidad de Alginatos Dentales. The aim of this study was to assess the cytotoxicity of alginates for dental applications. Fourteen different alginates were assessed: Jeltrate, Jeltrate Plus, Jeltrate. Actuamos sólo en el sector mayorista y principalmente en el ramo dental ; para lo cual disponemos de los registros e inscripciones necesarios que son.

Author: Dozahn Shak
Country: Cameroon
Language: English (Spanish)
Genre: Spiritual
Published (Last): 25 December 2004
Pages: 342
PDF File Size: 13.1 Mb
ePub File Size: 17.3 Mb
ISBN: 411-7-77774-394-9
Downloads: 31787
Price: Free* [*Free Regsitration Required]
Uploader: Shaktira

On the other hand, there were statistical differences between CC and C- groups in relation to other ones. In this way, if appropriate quantities of potassium alginate, calcium sulfate and trisodium phosphate are mixed with water, the following reaction takes place: Alginates are structural polysaccha-rides of the amorphous matrix of the cellular wall in brown seaweeds such as Macrocystis pyrifera L.

Compressive strength of dental impression materials may depend on the alginate composition algal speciesalginate concentration, its polymerization degree, and calcium concentration. It was concluded that S3, P1, P2 and P3 alginates have good potential for use in the production of dental impression materials. Ten kilograms of dried and milled alga M. Production, properties, and uses of dentaels. The dental impression formulations produced experimentally using the P1, P2 and P3 potassium alginates and the S3 sodium alginate formed gels.

Alginqtos present, alginates are widely used in dental impression materials because they are dsntales to handle, comfortable for patients and do not require sophisticated equipment. Cytotoxicity evaluation dengales Activ GP and Resilon cones in vitro. Trisodium phosphate is a retardant, while calcium sulfate is the reactant used to promote gel formation.

Efforts are being made to develop an alginate production industry in Mexico based on the rational and efficient exploitation of M. In the present study, the cytotoxicity of dental alginates was assessed through cytotoxic tests performed with mouse fibroblast L cells, a method largely used in several works evaluating the cytotoxicity of materials for use in dentistry Alcaide et al. Porto Alegre, 36 2: The storage modulus represents the elastic behavior of the gel in the dental impression material prepared.

Recibido en octubre de ; aceptado en octubre de Brown seaweed extracts alginates. Basically, intoxication with alginate occurs through inhalation of the powder denttales patient and practitioner, accidental intake by the patient, and absorption by oral mucosa in the cases of repeated impression procedures Braga et al.

  2006 YAMAHA YZ250F OWNERS MANUAL PDF

Cytotoxicity of Dental Alginates Citotoxicidad de Alginatos Dentales – Semantic Scholar

To determine the potential use of alginates from M. At the present time in Mexico, M. The alginate viscosities are not affected over the pH range of The samples were kept in contact with culture medium during this 2-minute period, and the supernatants were then put in contact with the cells.

The effect of pre-extraction treatments on the yield and quality of alginate.

The results obtained showed that all alginate materials are cytotoxicity compared to the control groups CC and C. Material and methods 1. Formulations with P2 alginate were type I, except for a6 that was alginatls II. Several g samples of dental impression material were prepared using S1, S2 and S3 sodium alginates, and P1, P2 and P3 potassium alginates in 10 different formulations as show in table 1.

The alginate manufacturers produce a powder containing various compounds for different aims. This amount is related to the viscosity reduction after one sequestrates the calcium with sodium hexametaphosphate.

From This Paper Figures, tables, and topics from this paper. Jeltrate Plus alginate was found to have the higher percentage of viable cells Figure 1 shows the compressive strength algiinatos dental impressions produced with the alginates that formed gels. A common formula for a dental impression material, based on the above description, is as follows: After this period, the cells were fixed using ?

The use of cell cultures has been widely employed as part of a series of recommended tests to assess the biological behaviour of materials put in contact with human tissues Estrela, ; Jorge et al.

Cytotoxicity of Dental Alginates Citotoxicidad de Alginatos Dentales

The total sample consisted of 14 dental alginates from different manufacturers and divided into 14 groups as follows: Conversely, the a2 and a6 formulations having the lowest alginate and calcium sulfate concentrations showed the lowest compressive strengths. La ciencia de los materiales dentales.

Distribution and quantification of Sargassum beds along the west coast of the Gulf of California, Mexico. The alginic acid fibers obtained were pressed using a hydraulic press to remove as much water as possible McHugh et al. After this period, the cells were fixed and viable cell counting was performed by using a spectrophotometer BioTek, Winooski, Vermont, USA at wavelength of nm.

  LEY 25509 PDF

Skip to search form Skip to main content.

Based on this premise, the objective of the present study was to assess the cytotoxicity in cell cultures using different alginate materials for dental application and to verify the hypothesis that different alginate formulations promote different cell reactions. Alginates with high content of guluronic acids characteristically yield materials with high gel strength. Seven grams of each dental impression formulation table 1 were mixed with 18 mL of distilled water for 1 min.

The materials were previously sterilized by exposing them to ultra-violet light Labconco, Kansas, Missouri, USA during 1 hour. Discussion The alginates obtained with the process selected produced a range of products with viscosities from 50 to mPa s sodium alginate and 48 to mPa s potassium alginate.

The loss modulus G” represents the viscous behavior of the formulation. Cytotoxic effect of saffron stigma aqueous extract on human transitional cell carcinoma and mouse fibroblast. Cytotoxicity of dental alginates.

However, at larger strains value, Tan 8 increased for all formulations, suggesting that as the partial breakdown of the elastic structure proceeds with increasing strain, a change to a relatively more viscous behavior of the formulations takes place. The two-minute evaluation adopted in this study was based on the maximum time in which alginate is left in contact with the oral mucosa during the impression procedure, as recommended by the manufacturer.

To verify the cell response to extreme situations, other 3 groups were included in the study: During the impression procedure, alginate is left in close contact with the oral mucosa for approximately 2 alginwtos, and this tissue is highly vascularised and has great absorption potential. The objective of this research was to produce sodium and potassium alginates from M. Also, alginates from different seaweeds have differing proportions of manuronic acid and guluronic acid in their structures and different proportions of M, G and MG blocks.